Merge branch 'master' of https://github.com/JonCook/tutorials

twitter4j/README.md

@@ -0,0 +1,7 @@
+## Twitter4J
+
+This module contains articles about Twitter4J.
+
+### Relevant articles
+
+- [Introduction to Twitter4J](https://www.baeldung.com/twitter4j)

twitter4j/pom.xml

@@ -0,0 +1,26 @@
+<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/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>Twitter4J</artifactId>
+    <name>Twitter4J</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.twitter4j</groupId>
+            <artifactId>twitter4j-stream</artifactId>
+            <version>${twitter4j-stream.version}</version>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <twitter4j-stream.version>4.0.6</twitter4j-stream.version>
+    </properties>
+
+</project>

twitter4j/src/main/java/com/baeldung/Application.java

@@ -0,0 +1,116 @@
+/**
+ * 
+ */
+package com.baeldung;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import twitter4j.DirectMessage;
+import twitter4j.Query;
+import twitter4j.QueryResult;
+import twitter4j.StallWarning;
+import twitter4j.Status;
+import twitter4j.StatusDeletionNotice;
+import twitter4j.StatusListener;
+import twitter4j.Twitter;
+import twitter4j.TwitterException;
+import twitter4j.TwitterFactory;
+import twitter4j.TwitterStream;
+import twitter4j.TwitterStreamFactory;
+import twitter4j.conf.ConfigurationBuilder;
+
+public class Application {
+
+	public static Twitter getTwitterinstance() {
+		/**
+		 * if not using properties file, we can set access token by following way
+		 */
+//		ConfigurationBuilder cb = new ConfigurationBuilder();
+//		cb.setDebugEnabled(true)
+//		  .setOAuthConsumerKey("//TODO")
+//		  .setOAuthConsumerSecret("//TODO")
+//		  .setOAuthAccessToken("//TODO")
+//		  .setOAuthAccessTokenSecret("//TODO");
+//		TwitterFactory tf = new TwitterFactory(cb.build());
+//		Twitter twitter = tf.getSingleton();
+		
+		Twitter twitter = TwitterFactory.getSingleton();
+		return twitter;
+		
+	}
+	
+	public static String createTweet(String tweet) throws TwitterException {
+		Twitter twitter = getTwitterinstance();
+		Status status = twitter.updateStatus("creating baeldung API");
+	        return status.getText();
+	}
+	
+	public static List<String> getTimeLine() throws TwitterException {
+		Twitter twitter = getTwitterinstance();
+		List<Status> statuses = twitter.getHomeTimeline();
+		return statuses.stream().map(
+				item -> item.getText()).collect(
+						Collectors.toList());
+	}
+	
+	public static String sendDirectMessage(String recipientName, String msg) throws TwitterException {
+		Twitter twitter = getTwitterinstance();
+	        DirectMessage message = twitter.sendDirectMessage(recipientName, msg);
+	        return message.getText();
+	}
+	
+	public static List<String> searchtweets() throws TwitterException {
+		Twitter twitter = getTwitterinstance();
+	        Query query = new Query("source:twitter4j baeldung");
+	        QueryResult result = twitter.search(query);
+	        List<Status> statuses = result.getTweets();
+	        return statuses.stream().map(
+				item -> item.getText()).collect(
+						Collectors.toList());
+	}
+	
+	public static void streamFeed() {
+		
+		StatusListener listener = new StatusListener(){
+
+			@Override
+			public void onException(Exception e) {
+				e.printStackTrace();
+			}
+
+			@Override
+			public void onDeletionNotice(StatusDeletionNotice arg) {
+                                System.out.println("Got a status deletion notice id:" + arg.getStatusId());
+			}
+
+			@Override
+			public void onScrubGeo(long userId, long upToStatusId) {
+                                System.out.println("Got scrub_geo event userId:" + userId + " upToStatusId:" + upToStatusId);
+			}
+
+			@Override
+			public void onStallWarning(StallWarning warning) {
+                                System.out.println("Got stall warning:" + warning);
+			}
+
+			@Override
+			public void onStatus(Status status) {
+                                System.out.println(status.getUser().getName() + " : " + status.getText());
+			}
+
+			@Override
+			public void onTrackLimitationNotice(int numberOfLimitedStatuses) {
+                                System.out.println("Got track limitation notice:" + numberOfLimitedStatuses);
+			}
+		};
+	
+		TwitterStream twitterStream = new TwitterStreamFactory().getInstance();
+		
+	        twitterStream.addListener(listener);
+	    
+	        twitterStream.sample();
+		
+	}
+	
+}

twitter4j/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

twitter4j/src/main/resources/twitter4j.properties

@@ -0,0 +1,4 @@
+oauth.consumerKey=//TODO
+oauth.consumerSecret=//TODO
+oauth.accessToken=//TODO
+oauth.accessTokenSecret=//TODO

twitter4j/src/test/java/com/baeldung/ApplicationIntegrationTest.java

@@ -0,0 +1,40 @@
+package com.baeldung;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.Test;
+
+import twitter4j.TwitterException;
+
+public class ApplicationIntegrationTest {
+
+	/**
+	 * In order run this jUnit test you need to configure your API details in the twitter4j.properties
+	 */
+	
+	String tweet = "baeldung is awsome";
+	
+	@Test
+	public void givenText_updateStatus() throws TwitterException {
+		String text = Application.createTweet(tweet);
+		assertEquals(tweet, text);
+	}
+	
+	@Test
+	public void givenCredential_fetchStatus() throws TwitterException {
+		List<String> statuses = Application.getTimeLine();
+		List<String> expectedStatuses = new ArrayList<String>();
+		expectedStatuses.add(tweet);
+		assertEquals(expectedStatuses, statuses);
+	}
+	
+	@Test
+	public void givenRecipientNameAndMessage_sendDirectMessage() throws TwitterException {
+		String msg = Application.sendDirectMessage("YOUR_RECCIPIENT_ID", tweet);
+		assertEquals(msg, tweet);
+	}
+	
+}