Merge pull request #23 from panos-kakos/master

Update from master
2023-07-31 11:55:28 +03:00
parent 82584d9e02 eb5e9fe2b5
commit 3f5bc977bf
561 changed files with 9728 additions and 1920 deletions
@@ -8,7 +8,6 @@ This module contains articles about algorithms. Some classes of algorithms, e.g.
 - [Java Two Pointer Technique](https://www.baeldung.com/java-two-pointer-technique)
 - [Implementing Simple State Machines with Java Enums](https://www.baeldung.com/java-enum-simple-state-machine)
 - [Converting Between Roman and Arabic Numerals in Java](https://www.baeldung.com/java-convert-roman-arabic)
- [Practical Java Examples of the Big O Notation](https://www.baeldung.com/java-algorithm-complexity)
 - [Checking If a List Is Sorted in Java](https://www.baeldung.com/java-check-if-list-sorted)
 - [Checking if a Java Graph Has a Cycle](https://www.baeldung.com/java-graph-has-a-cycle)
 - [A Guide to the Folding Technique in Java](https://www.baeldung.com/folding-hashing-technique)
@@ -7,7 +7,6 @@ import static org.mockserver.model.HttpResponse.response;

 import java.io.IOException;
 import java.net.ServerSocket;
-import java.net.URISyntaxException;

 import org.apache.http.HttpStatus;
 import org.junit.jupiter.api.AfterAll;
@@ -18,22 +17,19 @@ import org.mockserver.integration.ClientAndServer;
 public class GetRequestMockServer {

    public static ClientAndServer mockServer;
-    public static String serviceOneUrl;
-    public static String serviceTwoUrl;

    public static int serverPort;

    public static final String SERVER_ADDRESS = "127.0.0.1";
-    public static final String PATH_ONE = "/test1";
-    public static final String PATH_TWO = "/test2";
-    public static final String METHOD = "GET";
+
+    public static final String SECURITY_PATH = "/spring-security-rest-basic-auth/api/foos/1";
+
+    public static final String UPLOAD_PATH = "/spring-mvc-java/stub/multipart";

    @BeforeAll
    static void startServer() throws IOException {
        serverPort = getFreePort();
-        System.out.println("Free port "+serverPort);
-        serviceOneUrl = "http://" + SERVER_ADDRESS + ":" + serverPort + PATH_ONE;
-        serviceTwoUrl = "http://" + SERVER_ADDRESS + ":" + serverPort + PATH_TWO;
+        System.out.println("Free port " + serverPort);
        mockServer = startClientAndServer(serverPort);
        mockGetRequest();
    }
@@ -44,33 +40,36 @@ public class GetRequestMockServer {
    }

    private static void mockGetRequest() {
-        new MockServerClient(SERVER_ADDRESS, serverPort)
-          .when(
-            request()
-              .withPath(PATH_ONE)
-              .withMethod(METHOD),
-            exactly(5)
-          )
-          .respond(
-            response()
-              .withStatusCode(HttpStatus.SC_OK)
-              .withBody("{\"status\":\"ok\"}")
-          );
-        new MockServerClient(SERVER_ADDRESS, serverPort)
-          .when(
-            request()
-              .withPath(PATH_TWO)
-              .withMethod(METHOD),
-            exactly(1)
-          )
-          .respond(
-            response()
-              .withStatusCode(HttpStatus.SC_OK)
-              .withBody("{\"status\":\"ok\"}")
-          );
+
+        MockServerClient client = new MockServerClient(SERVER_ADDRESS, serverPort);
+
+        client.when(
+                request()
+                  .withPath(SECURITY_PATH)
+                  .withMethod("GET"), 
+                exactly(1)
+              )
+              .respond(
+                response()
+                  .withStatusCode(HttpStatus.SC_OK)
+                  .withBody("{\"status\":\"ok\"}")
+              );
+
+        client.when(
+                request()
+                  .withPath(UPLOAD_PATH)
+                  .withMethod("POST"), 
+                exactly(4)
+              )
+              .respond(
+                response()
+                  .withStatusCode(HttpStatus.SC_OK)
+                  .withBody("{\"status\":\"ok\"}")
+                  .withHeader("Content-Type", "multipart/form-data")
+              );
    }

-    private static int getFreePort () throws IOException {
+    private static int getFreePort() throws IOException {
        try (ServerSocket serverSocket = new ServerSocket(0)) {
            return serverSocket.getLocalPort();
        }
@@ -19,7 +19,7 @@ class HttpClientCancelRequestLiveTest {
    void whenRequestIsCanceled_thenCorrect() throws IOException {
        HttpGet request = new HttpGet(SAMPLE_URL);
        try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
-                httpClient.execute(request, response -> {
+            httpClient.execute(request, response -> {
                HttpEntity entity = response.getEntity();

                System.out.println("----------------------------------------");
@@ -28,6 +28,12 @@ class HttpClientCancelRequestLiveTest {
                    System.out.println("Response content length: " + entity.getContentLength());
                }
                System.out.println("----------------------------------------");
+
+                if (entity != null) {
+                    // Closes this stream and releases any system resources
+                    entity.close();
+                }
+
                // Do not feel like reading the response body
                // Call abort on the request object
                request.abort();
@@ -4,6 +4,7 @@ import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.equalTo;
 import static org.junit.jupiter.api.Assertions.assertTrue;

+import org.apache.hc.core5.http.ParseException;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;

@@ -13,7 +14,6 @@ import org.apache.hc.client5.http.entity.mime.HttpMultipartMode;
 import org.apache.hc.client5.http.entity.mime.MultipartEntityBuilder;
 import org.apache.hc.client5.http.entity.mime.StringBody;
 import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
-import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
 import org.apache.hc.client5.http.impl.classic.HttpClientBuilder;

 import org.apache.hc.core5.http.ContentType;
@@ -28,9 +28,7 @@ import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.net.URL;

-import com.baeldung.httpclient.handler.CustomHttpClientResponseHandler;
-
-class HttpClientMultipartLiveTest {
+class HttpClientMultipartLiveTest extends GetRequestMockServer {

    // No longer available
    // private static final String SERVER = "http://echo.200please.com";
@@ -45,13 +43,15 @@ class HttpClientMultipartLiveTest {
    @BeforeEach
    public void before() {
        post = new HttpPost(SERVER);
+        String URL = "http://localhost:" + serverPort + "/spring-mvc-java/stub/multipart";
+        post = new HttpPost(URL);
    }

    @Test
    void givenFileandMultipleTextParts_whenUploadwithAddPart_thenNoExceptions() throws IOException {
        final URL url = Thread.currentThread()
-          .getContextClassLoader()
-          .getResource("uploads/" + TEXTFILENAME);
+            .getContextClassLoader()
+            .getResource("uploads/" + TEXTFILENAME);

        final File file = new File(url.getPath());
        final FileBody fileBody = new FileBody(file, ContentType.DEFAULT_BINARY);
@@ -66,27 +66,28 @@ class HttpClientMultipartLiveTest {
        final HttpEntity entity = builder.build();

        post.setEntity(entity);
-        try(CloseableHttpClient client = HttpClientBuilder.create()
-            .build();
+        try (CloseableHttpClient client = HttpClientBuilder.create()
+            .build()) {

-            CloseableHttpResponse response = (CloseableHttpResponse) client
-                .execute(post, new CustomHttpClientResponseHandler())){
-            final int statusCode = response.getCode();
-            final String responseString = getContent(response.getEntity());
-            final String contentTypeInHeader = getContentTypeHeader();
+            client.execute(post, response -> {
+                final int statusCode = response.getCode();
+                final String responseString = getContent(response.getEntity());
+                final String contentTypeInHeader = getContentTypeHeader();

-            assertThat(statusCode, equalTo(HttpStatus.SC_OK));
-            assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
-            System.out.println(responseString);
-            System.out.println("POST Content Type: " + contentTypeInHeader);
+                assertThat(statusCode, equalTo(HttpStatus.SC_OK));
+                assertTrue(contentTypeInHeader.contains("multipart/form-data"));
+                System.out.println(responseString);
+                System.out.println("POST Content Type: " + contentTypeInHeader);
+                return response;
+            });
        }
    }

    @Test
    void givenFileandTextPart_whenUploadwithAddBinaryBodyandAddTextBody_ThenNoExeption() throws IOException {
        final URL url = Thread.currentThread()
-          .getContextClassLoader()
-          .getResource("uploads/" + TEXTFILENAME);
+            .getContextClassLoader()
+            .getResource("uploads/" + TEXTFILENAME);
        final File file = new File(url.getPath());
        final String message = "This is a multipart post";
        final MultipartEntityBuilder builder = MultipartEntityBuilder.create();
@@ -96,30 +97,31 @@ class HttpClientMultipartLiveTest {
        final HttpEntity entity = builder.build();
        post.setEntity(entity);

-        try(CloseableHttpClient client = HttpClientBuilder.create()
-            .build();
+        try (CloseableHttpClient client = HttpClientBuilder.create()
+            .build()) {

-            CloseableHttpResponse response = (CloseableHttpResponse) client
-                .execute(post, new CustomHttpClientResponseHandler())){
+            client.execute(post, response -> {

-            final int statusCode = response.getCode();
-            final String responseString = getContent(response.getEntity());
-            final String contentTypeInHeader = getContentTypeHeader();
-            assertThat(statusCode, equalTo(HttpStatus.SC_OK));
-            assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
-            System.out.println(responseString);
-            System.out.println("POST Content Type: " + contentTypeInHeader);
+                final int statusCode = response.getCode();
+                final String responseString = getContent(response.getEntity());
+                final String contentTypeInHeader = getContentTypeHeader();
+                assertThat(statusCode, equalTo(HttpStatus.SC_OK));
+                assertTrue(contentTypeInHeader.contains("multipart/form-data"));
+                System.out.println(responseString);
+                System.out.println("POST Content Type: " + contentTypeInHeader);
+                return response;
+            });
        }
    }

    @Test
    void givenFileAndInputStreamandText_whenUploadwithAddBinaryBodyandAddTextBody_ThenNoException() throws IOException {
        final URL url = Thread.currentThread()
-          .getContextClassLoader()
-          .getResource("uploads/" + ZIPFILENAME);
+            .getContextClassLoader()
+            .getResource("uploads/" + ZIPFILENAME);
        final URL url2 = Thread.currentThread()
-          .getContextClassLoader()
-          .getResource("uploads/" + IMAGEFILENAME);
+            .getContextClassLoader()
+            .getResource("uploads/" + IMAGEFILENAME);
        final InputStream inputStream = new FileInputStream(url.getPath());
        final File file = new File(url2.getPath());
        final String message = "This is a multipart post";
@@ -131,25 +133,25 @@ class HttpClientMultipartLiveTest {
        final HttpEntity entity = builder.build();
        post.setEntity(entity);

-        try(CloseableHttpClient client = HttpClientBuilder.create()
-            .build();
+        try (CloseableHttpClient client = HttpClientBuilder.create()
+            .build()) {

-            CloseableHttpResponse response = (CloseableHttpResponse) client
-                .execute(post, new CustomHttpClientResponseHandler())){
-
-            final int statusCode = response.getCode();
-            final String responseString = getContent(response.getEntity());
-            final String contentTypeInHeader = getContentTypeHeader();
-            assertThat(statusCode, equalTo(HttpStatus.SC_OK));
-            assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
-            System.out.println(responseString);
-            System.out.println("POST Content Type: " + contentTypeInHeader);
-            inputStream.close();
+            client.execute(post, response -> {
+                final int statusCode = response.getCode();
+                final String responseString = getContent(response.getEntity());
+                final String contentTypeInHeader = getContentTypeHeader();
+                assertThat(statusCode, equalTo(HttpStatus.SC_OK));
+                assertTrue(contentTypeInHeader.contains("multipart/form-data;"));
+                System.out.println(responseString);
+                System.out.println("POST Content Type: " + contentTypeInHeader);
+                inputStream.close();
+                return response;
+            });
        }
    }

    @Test
-    void givenCharArrayandText_whenUploadwithAddBinaryBodyandAddTextBody_ThenNoException() throws IOException {
+    void givenCharArrayandText_whenUploadwithAddBinaryBodyandAddTextBody_ThenNoException() throws IOException, ParseException {
        final String message = "This is a multipart post";
        final byte[] bytes = "binary code".getBytes();
        final MultipartEntityBuilder builder = MultipartEntityBuilder.create();
@@ -159,21 +161,20 @@ class HttpClientMultipartLiveTest {
        final HttpEntity entity = builder.build();
        post.setEntity(entity);

-        try(CloseableHttpClient client = HttpClientBuilder.create()
-            .build();
+        try (CloseableHttpClient httpClient = HttpClientBuilder.create()
+            .build()) {

-            CloseableHttpResponse response = (CloseableHttpResponse) client
-                .execute(post, new CustomHttpClientResponseHandler())){
-
-            final int statusCode = response.getCode();
-            final String responseString = getContent(response.getEntity());
-            final String contentTypeInHeader = getContentTypeHeader();
-            assertThat(statusCode, equalTo(HttpStatus.SC_OK));
-            assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
-            System.out.println(responseString);
-            System.out.println("POST Content Type: " + contentTypeInHeader);
+            httpClient.execute(post, response -> {
+                final int statusCode = response.getCode();
+                final String responseString = getContent(response.getEntity());
+                final String contentTypeInHeader = getContentTypeHeader();
+                assertThat(statusCode, equalTo(HttpStatus.SC_OK));
+                assertTrue(contentTypeInHeader.contains("multipart/form-data;"));
+                System.out.println(responseString);
+                System.out.println("POST Content Type: " + contentTypeInHeader);
+                return response;
+            });
        }
-
    }

    // UTIL
@@ -43,7 +43,7 @@ public class HttpClientLiveTest {

    @Test(expected = ConnectTimeoutException.class)
    public final void givenLowTimeout_whenExecutingRequestWithTimeout_thenException() throws IOException {
-        final RequestConfig requestConfig = RequestConfig.custom().setConnectionRequestTimeout(50).setConnectTimeout(50).setSocketTimeout(20).build();
+        final RequestConfig requestConfig = RequestConfig.custom().setConnectionRequestTimeout(5).setConnectTimeout(5).setSocketTimeout(2).build();
        final HttpGet request = new HttpGet(SAMPLE_URL);
        request.setConfig(requestConfig);
        response = instance.execute(request);
@@ -1,5 +1,6 @@
 package com.baeldung.httpclient.base;

+import com.baeldung.httpclient.GetRequestMockServer;
 import com.baeldung.httpclient.ResponseUtil;
 import org.apache.http.auth.AuthScope;
 import org.apache.http.auth.UsernamePasswordCredentials;
@@ -9,14 +10,14 @@ import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.BasicCredentialsProvider;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClientBuilder;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;

 import java.io.IOException;

 /*
 * NOTE : Need module spring-security-rest-basic-auth to be running
 */
-public class HttpClientSandboxLiveTest {
+public class HttpClientSandboxLiveTest extends GetRequestMockServer {

    @Test
    public final void givenGetRequestExecuted_whenAnalyzingTheResponse_thenCorrectStatusCode() throws IOException {
@@ -26,7 +27,7 @@ public class HttpClientSandboxLiveTest {

        final CloseableHttpClient client = HttpClientBuilder.create().setDefaultCredentialsProvider(credentialsProvider).build();

-        final HttpGet httpGet = new HttpGet("http://localhost:8080/spring-security-rest-basic-auth/api/foos/1");
+        final HttpGet httpGet = new HttpGet("http://localhost:" + serverPort + "/spring-security-rest-basic-auth/api/foos/1");
        final CloseableHttpResponse response = client.execute(httpGet);

        System.out.println(response.getStatusLine());
@@ -1,11 +0,0 @@
-package com.baeldung.httpclient.handler;
-
-import org.apache.hc.core5.http.ClassicHttpResponse;
-import org.apache.hc.core5.http.io.HttpClientResponseHandler;
-
-public class CustomHttpClientResponseHandler implements HttpClientResponseHandler<ClassicHttpResponse> {
-    @Override
-    public ClassicHttpResponse handleResponse(ClassicHttpResponse response) {
-        return response;
-    }
-}
@@ -199,33 +199,7 @@
                <filtering>true</filtering>
            </resource>
        </resources>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-war-plugin</artifactId>
-                <version>${maven-war-plugin.version}</version>
-            </plugin>
-            <plugin>
-                <groupId>org.codehaus.cargo</groupId>
-                <artifactId>cargo-maven2-plugin</artifactId>
-                <version>${cargo-maven2-plugin.version}</version>
-                <configuration>
-                    <wait>true</wait>
-                    <container>
-                        <containerId>jetty8x</containerId>
-                        <type>embedded</type>
-                        <systemProperties>
-                            <!-- <provPersistenceTarget>cargo</provPersistenceTarget> -->
-                        </systemProperties>
-                    </container>
-                    <configuration>
-                        <properties>
-                            <cargo.servlet.port>8082</cargo.servlet.port>
-                        </properties>
-                    </configuration>
-                </configuration>
-            </plugin>
-        </plugins>
+
    </build>

    <profiles>
@@ -233,26 +207,6 @@
            <id>live</id>
            <build>
                <plugins>
-                    <plugin>
-                        <groupId>org.codehaus.cargo</groupId>
-                        <artifactId>cargo-maven2-plugin</artifactId>
-                        <executions>
-                            <execution>
-                                <id>start-server</id>
-                                <phase>pre-integration-test</phase>
-                                <goals>
-                                    <goal>start</goal>
-                                </goals>
-                            </execution>
-                            <execution>
-                                <id>stop-server</id>
-                                <phase>post-integration-test</phase>
-                                <goals>
-                                    <goal>stop</goal>
-                                </goals>
-                            </execution>
-                        </executions>
-                    </plugin>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-surefire-plugin</artifactId>
@@ -269,9 +223,6 @@
                                    <includes>
                                        <include>**/*LiveTest.java</include>
                                    </includes>
-                                    <systemPropertyVariables>
-                                        <webTarget>cargo</webTarget>
-                                    </systemPropertyVariables>
                                </configuration>
                            </execution>
                        </executions>
@@ -291,7 +242,6 @@
        <httpclient.version>4.5.14</httpclient.version>
        <mockserver.version>5.11.2</mockserver.version>
        <!-- maven plugins -->
-        <cargo-maven2-plugin.version>1.6.1</cargo-maven2-plugin.version>
        <maven-war-plugin.version>3.3.2</maven-war-plugin.version>
    </properties>

@@ -0,0 +1,56 @@
+package com.baeldung;
+
+import static org.mockserver.integration.ClientAndServer.startClientAndServer;
+import static org.mockserver.model.HttpRequest.request;
+import static org.mockserver.model.HttpResponse.response;
+
+import java.io.IOException;
+import java.net.ServerSocket;
+
+import org.apache.http.HttpStatus;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.mockserver.client.MockServerClient;
+import org.mockserver.integration.ClientAndServer;
+
+public class GetRequestMockServer {
+
+    public static ClientAndServer mockServer;
+    public static int serverPort;
+    public static String simplePathUrl;
+    public static final String SERVER_ADDRESS = "127.0.0.1";
+    public static final String SIMPLE_PATH = "/httpclient-simple/api/bars/1";
+
+    @BeforeAll
+    static void startServer() throws IOException {
+        serverPort = getFreePort();
+        System.out.println("Free port " + serverPort);
+        mockServer = startClientAndServer(serverPort);
+
+        simplePathUrl = "http://" + SERVER_ADDRESS + ":" + serverPort + SIMPLE_PATH;
+
+        mockGetRequest();
+    }
+
+    @AfterAll
+    static void stopServer() {
+        mockServer.stop();
+    }
+
+    private static void mockGetRequest() {
+
+        MockServerClient client = new MockServerClient(SERVER_ADDRESS, serverPort);
+
+        client.when(request().withPath(SIMPLE_PATH)
+                .withMethod("GET"))
+            .respond(response().withStatusCode(HttpStatus.SC_OK)
+                .withBody("{\"status\":\"ok\"}"));
+    }
+
+    private static int getFreePort() throws IOException {
+        try (ServerSocket serverSocket = new ServerSocket(0)) {
+            return serverSocket.getLocalPort();
+        }
+    }
+
+}
@@ -10,7 +10,7 @@ import java.io.IOException;
 import java.security.GeneralSecurityException;

 import javax.net.ssl.SSLContext;
-import javax.net.ssl.SSLPeerUnverifiedException;
+import javax.net.ssl.SSLHandshakeException;

 import org.apache.http.HttpResponse;
 import org.apache.http.client.methods.HttpGet;
@@ -31,10 +31,10 @@ import org.springframework.http.ResponseEntity;
 import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
 import org.springframework.web.client.RestTemplate;

+import com.baeldung.GetRequestMockServer;

-class ClientLiveTest {
+class ClientLiveTest extends GetRequestMockServer {

-    final String urlOverHttps = "http://localhost:8082/httpclient-simple/api/bars/1";

    @Test
    void givenAcceptingAllCertificates_whenHttpsUrlIsConsumed_thenOk_2() throws GeneralSecurityException {
@@ -54,13 +54,13 @@ class ClientLiveTest {
            .build();

        final HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
-        final ResponseEntity<String> response = new RestTemplate(requestFactory).exchange(urlOverHttps, HttpMethod.GET, null, String.class);
+        final ResponseEntity<String> response = new RestTemplate(requestFactory).exchange(simplePathUrl, HttpMethod.GET, null, String.class);
        assertThat(response.getStatusCode().value(), equalTo(200));
    }

    @Test
    void givenAcceptingAllCertificates_whenHttpsUrlIsConsumed_thenCorrect() throws IOException {
-        final HttpGet getMethod = new HttpGet(urlOverHttps);
+        final HttpGet getMethod = new HttpGet(simplePathUrl);

        try (final CloseableHttpClient httpClient = HttpClients.custom()
            .setSSLHostnameVerifier(new NoopHostnameVerifier())
@@ -80,20 +80,22 @@ class ClientLiveTest {
        final HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
        requestFactory.setHttpClient(httpClient);

-        final ResponseEntity<String> response = new RestTemplate(requestFactory).exchange(urlOverHttps, HttpMethod.GET, null, String.class);
+        final ResponseEntity<String> response = new RestTemplate(requestFactory).exchange(simplePathUrl, HttpMethod.GET, null, String.class);
        assertThat(response.getStatusCode().value(), equalTo(200));
    }

    @Test
    void whenHttpsUrlIsConsumed_thenException() {
-        String urlOverHttps = "https://localhost:8082/httpclient-simple";
+        String urlOverHttps = "https://localhost:"+serverPort+"/httpclient-simple/api/bars/1";
        HttpGet getMethod = new HttpGet(urlOverHttps);

-        assertThrows(SSLPeerUnverifiedException.class, () -> {
+        assertThrows(SSLHandshakeException.class, () -> {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            HttpResponse response = httpClient.execute(getMethod);
            assertThat(response.getStatusLine()
                .getStatusCode(), equalTo(200));
        });
    }
+
+
 }
@@ -1,6 +1,5 @@
 package com.baeldung.client;

-import static org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER;
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.equalTo;

@@ -89,4 +88,5 @@ public class RestClientV4LiveManualTest {
        HttpResponse response = httpClient.execute(getMethod);
        assertThat(response.getStatusLine().getStatusCode(), equalTo(200));
    }
+
 }
@@ -1,77 +0,0 @@
-package com.baeldung.httpclient;
-
-import static org.mockserver.integration.ClientAndServer.startClientAndServer;
-import static org.mockserver.matchers.Times.exactly;
-import static org.mockserver.model.HttpRequest.request;
-import static org.mockserver.model.HttpResponse.response;
-
-import java.io.IOException;
-import java.net.ServerSocket;
-import java.net.URISyntaxException;
-
-import org.apache.http.HttpStatus;
-import org.junit.jupiter.api.AfterAll;
-import org.junit.jupiter.api.BeforeAll;
-import org.mockserver.client.MockServerClient;
-import org.mockserver.integration.ClientAndServer;
-
-public class GetRequestMockServer {
-
-    public static ClientAndServer mockServer;
-    public static String serviceOneUrl;
-    public static String serviceTwoUrl;
-
-    public static int serverPort;
-
-    public static final String SERVER_ADDRESS = "127.0.0.1";
-    public static final String PATH_ONE = "/test1";
-    public static final String PATH_TWO = "/test2";
-    public static final String METHOD = "GET";
-
-    @BeforeAll
-    static void startServer() throws IOException, URISyntaxException {
-        serverPort = getFreePort();
-        serviceOneUrl = "http://" + SERVER_ADDRESS + ":" + serverPort + PATH_ONE;
-        serviceTwoUrl = "http://" + SERVER_ADDRESS + ":" + serverPort + PATH_TWO;
-        mockServer = startClientAndServer(serverPort);
-        mockGetRequest();
-    }
-
-    @AfterAll
-    static void stopServer() {
-        mockServer.stop();
-    }
-
-    private static void mockGetRequest() {
-        new MockServerClient(SERVER_ADDRESS, serverPort)
-            .when(
-                request()
-                    .withPath(PATH_ONE)
-                    .withMethod(METHOD),
-                exactly(5)
-            )
-            .respond(
-                response()
-                    .withStatusCode(HttpStatus.SC_OK)
-                    .withBody("{\"status\":\"ok\"}")
-            );
-        new MockServerClient(SERVER_ADDRESS, serverPort)
-            .when(
-                request()
-                    .withPath(PATH_TWO)
-                    .withMethod(METHOD),
-                exactly(1)
-            )
-            .respond(
-                response()
-                    .withStatusCode(HttpStatus.SC_OK)
-                    .withBody("{\"status\":\"ok\"}")
-            );
-    }
-
-    private static int getFreePort () throws IOException {
-        try (ServerSocket serverSocket = new ServerSocket(0)) {
-            return serverSocket.getLocalPort();
-        }
-    }
-}
@@ -31,6 +31,7 @@ import org.apache.http.protocol.HttpContext;
 import org.apache.http.ssl.SSLContexts;
 import org.junit.jupiter.api.Test;

+import com.baeldung.GetRequestMockServer;

 class HttpAsyncClientV4LiveTest extends GetRequestMockServer {

@@ -44,7 +44,9 @@ public class HttpClientCancelRequestV4LiveTest {
            System.out.println(response.getStatusLine());
            if (entity != null) {
                System.out.println("Response content length: " + entity.getContentLength());
+                entity.getContent().close();
            }
+
            System.out.println("----------------------------------------");

            // Do not feel like reading the response body
@@ -21,7 +21,9 @@ import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;

-class HttpClientTimeoutV4LiveTest {
+import com.baeldung.GetRequestMockServer;
+
+class HttpClientTimeoutV4LiveTest extends GetRequestMockServer {

    private CloseableHttpResponse response;

@@ -97,7 +99,7 @@ class HttpClientTimeoutV4LiveTest {
        int timeout = 20; // seconds
        RequestConfig requestConfig = RequestConfig.custom().setConnectionRequestTimeout(timeout * 1000)
            .setConnectTimeout(timeout * 1000).setSocketTimeout(timeout * 1000).build();
-        HttpGet getMethod = new HttpGet("http://localhost:8082/httpclient-simple/api/bars/1");
+        HttpGet getMethod = new HttpGet(simplePathUrl);
        getMethod.setConfig(requestConfig);

        int hardTimeout = 5; // seconds
@@ -13,13 +13,15 @@ import org.apache.http.impl.client.HttpClientBuilder;
 import org.apache.http.util.EntityUtils;
 import org.junit.jupiter.api.Test;

+import com.baeldung.GetRequestMockServer;
+
 class ApacheHttpClientUnitTest extends GetRequestMockServer {


    @Test
    void givenDeveloperUsedCloseableHttpResponse_whenExecutingGetRequest_thenStatusIsOk() throws IOException {
        try (CloseableHttpClient httpClient = HttpClientBuilder.create().build()) {
-            HttpGet httpGet = new HttpGet(serviceOneUrl);
+            HttpGet httpGet = new HttpGet(simplePathUrl);
            try (CloseableHttpResponse response = httpClient.execute(httpGet)) {
                HttpEntity entity = response.getEntity();
                EntityUtils.consume(entity);
@@ -1,78 +0,0 @@
-package com.baeldung.httpclient.httpclient;
-
-import org.apache.http.HttpStatus;
-import org.junit.jupiter.api.AfterAll;
-import org.junit.jupiter.api.BeforeAll;
-import org.mockserver.client.MockServerClient;
-import org.mockserver.integration.ClientAndServer;
-
-import java.io.IOException;
-import java.net.ServerSocket;
-import java.net.URISyntaxException;
-
-import static org.mockserver.integration.ClientAndServer.startClientAndServer;
-import static org.mockserver.matchers.Times.exactly;
-import static org.mockserver.model.HttpRequest.request;
-import static org.mockserver.model.HttpResponse.response;
-
-public class GetRequestMockServer {
-
-    public static ClientAndServer mockServer;
-    public static String serviceOneUrl;
-    public static String serviceTwoUrl;
-
-    private static int serverPort;
-
-    public static final String SERVER_ADDRESS = "127.0.0.1";
-    public static final String PATH_ONE = "/test1";
-    public static final String PATH_TWO = "/test2";
-    public static final String METHOD = "GET";
-
-    @BeforeAll
-    static void startServer() throws IOException, URISyntaxException {
-        serverPort = getFreePort();
-        serviceOneUrl = "http://" + SERVER_ADDRESS + ":" + serverPort + PATH_ONE;
-        serviceTwoUrl = "http://" + SERVER_ADDRESS + ":" + serverPort + PATH_TWO;
-        mockServer = startClientAndServer(serverPort);
-        mockGetRequest();
-    }
-
-    @AfterAll
-    static void stopServer() {
-        mockServer.stop();
-    }
-
-    private static void mockGetRequest() {
-        new MockServerClient(SERVER_ADDRESS, serverPort)
-          .when(
-            request()
-              .withPath(PATH_ONE)
-              .withMethod(METHOD),
-            exactly(5)
-          )
-          .respond(
-            response()
-              .withStatusCode(HttpStatus.SC_OK)
-              .withBody("{\"status\":\"ok\"}")
-          );
-        new MockServerClient(SERVER_ADDRESS, serverPort)
-          .when(
-            request()
-              .withPath(PATH_TWO)
-              .withMethod(METHOD),
-            exactly(1)
-          )
-          .respond(
-            response()
-              .withStatusCode(HttpStatus.SC_OK)
-              .withBody("{\"status\":\"ok\"}")
-          );
-    }
-
-    private static int getFreePort () throws IOException {
-        try (ServerSocket serverSocket = new ServerSocket(0)) {
-            return serverSocket.getLocalPort();
-        }
-    }
-
-}
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xmlns="http://maven.apache.org/POM/4.0.0"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xmlns="http://maven.apache.org/POM/4.0.0"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>apache-poi-2</artifactId>
    <version>0.0.1-SNAPSHOT</version>
@@ -100,7 +100,6 @@
        </plugins>
    </build>

-
    <properties>
        <aws-lambda-java-events.version>1.3.0</aws-lambda-java-events.version>
        <aws-lambda-java-core.version>1.1.0</aws-lambda-java-core.version>
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>core-groovy-2</artifactId>
@@ -117,11 +118,11 @@
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.20.1</version>
                <configuration>
-                <useFile>false</useFile>
-                <includes>
-                    <include>**/*Test.java</include>
-                    <include>**/*Spec.java</include>
-                </includes>
+                    <useFile>false</useFile>
+                    <includes>
+                        <include>**/*Test.java</include>
+                        <include>**/*Spec.java</include>
+                    </includes>
                </configuration>
            </plugin>
            <!-- Maven Assembly Plugin: needed to run the jar through command line -->
@@ -4,29 +4,84 @@ import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;

 import java.io.IOException;
+import java.net.Socket;
 import java.net.URI;
+import java.net.URISyntaxException;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
+import java.security.KeyManagementException;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+import java.security.cert.X509Certificate;
 import java.util.Properties;

+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.X509ExtendedTrustManager;
+
 public class HttpClientSSLBypassUnitTest {

    @Test
-    public void whenHttpsRequest_thenCorrect() throws IOException, InterruptedException {
+    public void givenDisableUsingJVMProperty_whenByPassCertificationVerification_thenSuccessHttpResponse() throws IOException, InterruptedException {
        final Properties props = System.getProperties();
        props.setProperty("jdk.internal.httpclient.disableHostnameVerification", Boolean.TRUE.toString());

        HttpClient httpClient = HttpClient.newBuilder()
-          .build();
+            .build();

        HttpRequest request = HttpRequest.newBuilder()
-          .uri(URI.create("https://wrong.host.badssl.com/"))
-          .build();
+            .uri(URI.create("https://wrong.host.badssl.com/"))
+            .build();

        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
        props.setProperty("jdk.internal.httpclient.disableHostnameVerification", Boolean.FALSE.toString());

        Assertions.assertEquals(200, response.statusCode());
    }
+
+    @Test
+    public void givenMockTrustManager_whenByPassCertificateVerification_thenSuccessHttpResponse() throws IOException, InterruptedException, NoSuchAlgorithmException, KeyManagementException, URISyntaxException {
+        SSLContext sslContext = SSLContext.getInstance("SSL"); // OR TLS
+        sslContext.init(null, new TrustManager[]{ MOCK_TRUST_MANAGER }, new SecureRandom());
+        HttpClient httpClient = HttpClient.newBuilder().sslContext(sslContext).build();
+        HttpRequest request = HttpRequest.newBuilder()
+            .uri(new URI("https://wrong.host.badssl.com/"))
+            .build();
+        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
+        Assertions.assertEquals(200, response.statusCode());
+    }
+
+
+    private static final TrustManager MOCK_TRUST_MANAGER = new X509ExtendedTrustManager() {
+        @Override
+        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
+            return new java.security.cert.X509Certificate[0];
+        }
+
+        @Override
+        public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) {
+        }
+
+        @Override
+        public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) {
+        }
+
+        @Override
+        public void checkServerTrusted(X509Certificate[] chain, String authType, SSLEngine engine) {
+        }
+
+        @Override
+        public void checkServerTrusted(X509Certificate[] chain, String authType, Socket socket) {
+        }
+
+        @Override
+        public void checkClientTrusted(X509Certificate[] chain, String authType, SSLEngine engine) {
+        }
+
+        @Override
+        public void checkClientTrusted(X509Certificate[] chain, String authType, Socket socket) {
+        }
+    };
 }
@@ -72,7 +72,7 @@
                                    <mainClass>org.openjdk.jmh.Main</mainClass>
                                </transformer>
                                <transformer
-                                    implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
+                                    implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                            </transformers>
                            <filters>
                                <filter>
@@ -1,2 +1,3 @@
 ## Relevant Articles
 - [Scoped Values in Java 20](https://www.baeldung.com/java-20-scoped-values)
+- [How to Read Zip Files Entries With Java](https://www.baeldung.com/java-read-zip-files)
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.baeldung.core-java-modules</groupId>
@@ -0,0 +1,30 @@
+package com.baeldung.convertpaths;
+
+import java.io.File;
+import java.nio.file.FileSystems;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+public class RelativePathConverter {
+
+    public static String convertToAbsoluteUsePathsClass(String relativePath) {
+        Path absolutePath = Paths.get(relativePath).toAbsolutePath();
+        return absolutePath.toString();
+    }
+
+    public static String convertToAbsoluteUseFileClass(String relativePath) {
+        File file = new File(relativePath);
+        return file.getAbsolutePath();
+    }
+
+    public static String convertToAbsoluteUseFileSystemsClass(String relativePath) {
+        Path absolutePath = FileSystems.getDefault().getPath(relativePath).toAbsolutePath();
+        return absolutePath.toString();
+    }
+
+    public static void main(String[] args) {
+        String relativePath = "myFolder/myFile.txt";
+        String absolutePath = convertToAbsoluteUseFileSystemsClass(relativePath);
+        System.out.println("Absolute Path: " + absolutePath);
+    }
+}
@@ -0,0 +1,51 @@
+package com.baeldung.convertpaths;
+
+import org.junit.Test;
+
+public class RelativePathConverterUnitTest {
+
+    @Test
+    public void givenRelativePath_whenConvertingToAbsolutePath_thenPrintOutput() {
+        String relativePath = "data/sample.txt";
+
+        System.out.println(RelativePathConverter.convertToAbsoluteUsePathsClass(relativePath));
+        System.out.println(RelativePathConverter.convertToAbsoluteUseFileClass(relativePath));
+        System.out.println(RelativePathConverter.convertToAbsoluteUseFileSystemsClass(relativePath));
+    }
+
+    @Test
+    public void givenAbsolutePath_whenConvertingToAbsolutePath_thenPrintOutput() {
+        String absolutePath = "/var/www/index.html";
+
+        System.out.println(RelativePathConverter.convertToAbsoluteUsePathsClass(absolutePath));
+        System.out.println(RelativePathConverter.convertToAbsoluteUseFileClass(absolutePath));
+        System.out.println(RelativePathConverter.convertToAbsoluteUseFileSystemsClass(absolutePath));
+    }
+
+    @Test
+    public void givenEmptyPath_whenConvertingToAbsolutePath_thenPrintOutput() {
+        String emptyPath = "";
+
+        System.out.println(RelativePathConverter.convertToAbsoluteUsePathsClass(emptyPath));
+        System.out.println(RelativePathConverter.convertToAbsoluteUseFileClass(emptyPath));
+        System.out.println(RelativePathConverter.convertToAbsoluteUseFileSystemsClass(emptyPath));
+    }
+
+    @Test
+    public void givenParentDirectoryPath_whenConvertingToAbsolutePath_thenPrintOutput() {
+        String relativePath = "../data/sample.txt";
+
+        System.out.println(RelativePathConverter.convertToAbsoluteUsePathsClass(relativePath));
+        System.out.println(RelativePathConverter.convertToAbsoluteUseFileClass(relativePath));
+        System.out.println(RelativePathConverter.convertToAbsoluteUseFileSystemsClass(relativePath));
+    }
+
+    @Test
+    public void givenRelativePathContainingDots_whenConvertingToAbsolutePath_thenPrintOutput() {
+        String relativePath = "././data/sample.txt";
+
+        System.out.println(RelativePathConverter.convertToAbsoluteUsePathsClass(relativePath));
+        System.out.println(RelativePathConverter.convertToAbsoluteUseFileClass(relativePath));
+        System.out.println(RelativePathConverter.convertToAbsoluteUseFileSystemsClass(relativePath));
+    }
+}
@@ -7,7 +7,7 @@ import java.net.URISyntaxException;
 import java.nio.file.Path;
 import java.nio.file.Paths;

-public class ZipEntryReaderTest {
+public class ZipEntryReaderUnitTest {

    @Test
    public void givenZipFile_thenReadEntriesAndValidateContent() throws URISyntaxException, IOException {
@@ -1,55 +1,55 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-  <parent>
-    <groupId>com.baeldung</groupId>
-    <artifactId>core-java-9-jigsaw</artifactId>
-    <version>0.2-SNAPSHOT</version>
-  </parent>
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>core-java-9-jigsaw</artifactId>
+        <version>0.2-SNAPSHOT</version>
+    </parent>

-  <artifactId>library-core</artifactId>
+    <artifactId>library-core</artifactId>

-  <properties>
-    <maven.compiler.source>19</maven.compiler.source>
-    <maven.compiler.target>19</maven.compiler.target>
-    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-  </properties>
+    <properties>
+        <maven.compiler.source>19</maven.compiler.source>
+        <maven.compiler.target>19</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>

-  <dependencies>
-    <dependency>
-      <groupId>org.junit.jupiter</groupId>
-      <artifactId>junit-jupiter-api</artifactId>
-      <version>5.9.2</version>
-      <scope>test</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.junit.jupiter</groupId>
-      <artifactId>junit-jupiter-engine</artifactId>
-      <version>5.9.2</version>
-      <scope>test</scope>
-    </dependency>
-  </dependencies>
+    <dependencies>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>5.9.2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>5.9.2</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>

-  <build>
-    <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.8.1</version>
-        <configuration>
-          <release>9</release>
-        </configuration>
-      </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-surefire-plugin</artifactId>
-        <version>3.0.0-M5</version>
-        <configuration>
-          <useModulePath>false</useModulePath>
-        </configuration>
-      </plugin>
-    </plugins>
-  </build>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.1</version>
+                <configuration>
+                    <release>9</release>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>3.0.0-M5</version>
+                <configuration>
+                    <useModulePath>false</useModulePath>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 </project>
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xmlns="http://maven.apache.org/POM/4.0.0"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xmlns="http://maven.apache.org/POM/4.0.0"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>core-java-collections-5</artifactId>
    <name>core-java-collections-5</name>
@@ -0,0 +1,74 @@
+package com.baeldung.convertlisttoarray;
+
+import static org.junit.Assert.assertTrue;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import com.google.common.primitives.Longs;
+
+public class LongListToLongArrayConversionUnitTest {
+
+    private List<Long> list;
+
+    @Before
+    public void setUp() {
+        list = Arrays.asList(1L, 2L, 3L, 4L, 5L);
+    }
+
+    @Test
+    public void givenALongList_whenConvertWithListToArray_thenReturnLongArray() {
+
+        // Init an array with the same size as the list to convert
+        Long[] arrayWithSettedSize = new Long[list.size()];
+        arrayWithSettedSize = list.toArray(arrayWithSettedSize);
+        assertTrue(list.size() == arrayWithSettedSize.length);
+
+        // Init an empty array
+        Long[] arrayWithNoSettedSize = new Long[0];
+        arrayWithNoSettedSize = list.toArray(arrayWithNoSettedSize);
+        assertTrue(list.size() == arrayWithNoSettedSize.length);
+    }
+
+    @Test
+    public void givenALongList_whenConvertWithLongsToArray_thenReturnLongArray() {
+        // Convertion using Guava library Longs.toArray() method
+        long[] array = Longs.toArray(list);
+        assertTrue(compareListWithArray(list, array));
+    }
+
+    @Test
+    public void givenALongList_whenConvertWithStreamMapToLong_thenReturnLongArray() {
+        // Using mapToLong() - lambda expression
+        long[] arrayUsingLambda = list.stream()
+          .mapToLong(l -> l)
+          .toArray();
+        assertTrue(compareListWithArray(list, arrayUsingLambda));
+
+        // Using mapToLong() - method reference
+        long[] arrayUsingMethodReference = list.stream()
+          .mapToLong(Long::longValue)
+          .toArray();
+        assertTrue(compareListWithArray(list, arrayUsingMethodReference));
+    }
+
+    public static boolean compareListWithArray(List<Long> list, long[] array) {
+        // Check if the sizes of the array and list are equal
+        if (array.length != list.size()) {
+            return false;
+        }
+
+        // Compare each element of the array with the corresponding element in the list
+        for (int i = 0; i < array.length; i++) {
+            // Convert Long to long for comparison
+            if (array[i] != list.get(i)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+}
--- a/Show More
+++ b/Show More