Merge branch 'master' of https://github.com/eugenp/tutorials into task/BAEL-8143

core-java-collections/src/test/java/com/baeldung/collection/StreamOperateAndRemoveUnitTest.java

@@ -0,0 +1,78 @@
+package com.baeldung.collection;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class StreamOperateAndRemoveUnitTest {
+
+    private List<Item> itemList;
+
+    @Before
+    public void setup() {
+
+        itemList = new ArrayList<>();
+        for (int i = 0; i < 10; i++) {
+            itemList.add(new Item(i));
+        }
+    }
+
+    @Test
+    public void givenAListOf10Items_whenFilteredForQualifiedItems_thenFilteredListContains5Items() {
+
+        final List<Item> filteredList = itemList.stream().filter(item -> item.isQualified())
+            .collect(Collectors.toList());
+
+        Assert.assertEquals(5, filteredList.size());
+    }
+
+    @Test
+    public void givenAListOf10Items_whenOperateAndRemoveQualifiedItemsUsingRemoveIf_thenListContains5Items() {
+
+        itemList.stream().filter(item -> item.isQualified()).forEach(item -> item.operate());
+        itemList.removeIf(item -> item.isQualified());
+
+        Assert.assertEquals(5, itemList.size());
+    }
+
+    @Test
+    public void givenAListOf10Items_whenOperateAndRemoveQualifiedItemsUsingRemoveAll_thenListContains5Items() {
+
+        final List<Item> operatedList = new ArrayList<>();
+        itemList.stream().filter(item -> item.isQualified()).forEach(item -> {
+            item.operate();
+            operatedList.add(item);
+        });
+        itemList.removeAll(operatedList);
+
+        Assert.assertEquals(5, itemList.size());
+    }
+
+    class Item {
+
+        private final Logger logger = LoggerFactory.getLogger(this.getClass().getName());
+
+        private final int value;
+
+        public Item(final int value) {
+
+            this.value = value;
+        }
+
+        public boolean isQualified() {
+
+            return value % 2 == 0;
+        }
+
+        public void operate() {
+
+            logger.info("Even Number: " + this.value);
+        }
+    }
+}

core-java-io/src/test/java/com/baeldung/file/FilenameFilterManualTest.java

@@ -18,7 +18,7 @@ public class FilenameFilterManualTest {
     @BeforeClass
     public static void setupClass() {
         directory = new File(FilenameFilterManualTest.class.getClassLoader()
-            .getResource("testFolder")
+            .getResource("fileNameFilterManualTestFolder")
             .getFile());
     }
 

core-java-persistence/pom.xml

@@ -39,6 +39,16 @@
             <artifactId>c3p0</artifactId>
             <version>${c3p0.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+            <version>${springframework.spring-web.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+            <version>${springframework.boot.spring-boot-starter.version}</version>
+        </dependency>
     </dependencies>
     <build>
         <finalName>core-java-persistence</finalName>
@@ -55,5 +65,7 @@
         <commons-dbcp2.version>2.4.0</commons-dbcp2.version>
         <HikariCP.version>3.2.0</HikariCP.version>
         <c3p0.version>0.9.5.2</c3p0.version>
+        <springframework.boot.spring-boot-starter.version>1.5.8.RELEASE</springframework.boot.spring-boot-starter.version>
+        <springframework.spring-web.version>4.3.4.RELEASE</springframework.spring-web.version>
     </properties>
 </project>

core-java/pom.xml

@@ -127,11 +127,6 @@
             <artifactId>spring-web</artifactId>
             <version>${springframework.spring-web.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter</artifactId>
-            <version>${springframework.boot.spring-boot-starter.version}</version>
-        </dependency>
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
@@ -532,7 +527,6 @@
         <!-- maven plugins -->
         <maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
         <springframework.spring-web.version>4.3.4.RELEASE</springframework.spring-web.version>
-        <springframework.boot.spring-boot-starter.version>1.5.8.RELEASE</springframework.boot.spring-boot-starter.version>
         
         <javamoney.moneta.version>1.1</javamoney.moneta.version>
         <h2database.version>1.4.197</h2database.version>

core-java/src/main/java/com/baeldung/exceptionhandling/Exceptions.java

@@ -25,11 +25,7 @@ public class Exceptions {
     }
 
     public List<Player> loadAllPlayers(String playersFile) throws IOException{
-        try {
-            throw new IOException();
-        } catch(IOException ex) {
-            throw new IllegalStateException();
-        }
+        throw new IOException();
     }
 
     public int getPlayerScoreThrows(String playerFile) throws FileNotFoundException {		 
@@ -163,14 +159,8 @@ public class Exceptions {
         }
     }
 
-    public void throwAsGotoAntiPattern() {
-        try {
-            // bunch of code
-            throw new MyException();
-            // second bunch of code
-        } catch ( MyException e ) {
-            // third bunch of code
-        }
+    public void throwAsGotoAntiPattern() throws MyException {
+    	throw new MyException();
     }
 
     public int getPlayerScoreSwallowingExceptionAntiPattern(String playerFile) {

core-java/src/main/java/com/baeldung/keywords/finalize/FinalizeObject.java

@@ -0,0 +1,18 @@
+package com.baeldung.keywords.finalize;
+
+public class FinalizeObject {
+
+    @Override
+    protected void finalize() throws Throwable {
+        System.out.println("Execute finalize method");
+        super.finalize();
+    }
+
+    public static void main(String[] args) throws Exception {
+        FinalizeObject object = new FinalizeObject();
+        object = null;
+        System.gc();
+        Thread.sleep(1000);
+    }
+
+}

core-java/src/main/java/com/baeldung/keywords/finalkeyword/Child.java

@@ -0,0 +1,15 @@
+package com.baeldung.keywords.finalkeyword;
+
+public final class Child extends Parent {
+
+    @Override
+    void method1(int arg1, final int arg2) {
+        // OK
+    }
+
+/*    @Override
+    void method2() {
+        // Compilation error
+    }*/
+
+}

core-java/src/main/java/com/baeldung/keywords/finalkeyword/GrandChild.java

@@ -0,0 +1,5 @@
+package com.baeldung.keywords.finalkeyword;
+
+/*public class GrandChild extends Child {
+    // Compilation error
+}*/

core-java/src/main/java/com/baeldung/keywords/finalkeyword/Parent.java

@@ -0,0 +1,23 @@
+package com.baeldung.keywords.finalkeyword;
+
+public class Parent {
+
+    int field1 = 1;
+    final int field2 = 2;
+
+    Parent() {
+        field1 = 2; // OK
+//        field2 = 3; // Compilation error
+    }
+
+    void method1(int arg1, final int arg2) {
+        arg1 = 2; // OK
+//        arg2 = 3; // Compilation error
+    }
+
+    final void method2() {
+        final int localVar = 2; // OK
+//        localVar = 3; // Compilation error
+    }
+
+}

core-java/src/main/java/com/baeldung/keywords/finallykeyword/FinallyExample.java

@@ -0,0 +1,29 @@
+package com.baeldung.keywords.finallykeyword;
+
+public class FinallyExample {
+
+    public static void main(String args[]) throws Exception {
+        try {
+            System.out.println("Execute try block");
+            throw new Exception();
+        } catch (Exception e) {
+            System.out.println("Execute catch block");
+        } finally {
+            System.out.println("Execute finally block");
+        }
+
+        try {
+            System.out.println("Execute try block");
+        } finally {
+            System.out.println("Execute finally block");
+        }
+
+        try {
+            System.out.println("Execute try block");
+            throw new Exception();
+        } finally {
+            System.out.println("Execute finally block");
+        }
+    }
+
+}

core-java/src/main/java/com/baeldung/regexp/datepattern/optmization/OptimizedMatcher.java

@@ -0,0 +1,6 @@
+package com.baeldung.regexp.datepattern.optmization;
+
+public class OptimizedMatcher {
+
+
+}

core-java/src/test/java/com/baeldung/binding/AnimalUnitTest.java

@@ -16,8 +16,11 @@ import org.slf4j.LoggerFactory;
 
 import static org.hamcrest.CoreMatchers.is;
 import static org.junit.Assert.assertThat;
+import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 
+import java.util.List;
+
 /**
  * Created by madhumita.g on 01-08-2018.
  */
@@ -66,20 +69,18 @@ public class AnimalUnitTest {
         int testValue = 3;
         animal.makeNoise(testValue);
 
-        verify(mockAppender).doAppend(captorLoggingEvent.capture());
+        verify(mockAppender,times(3)).doAppend(captorLoggingEvent.capture());
 
-        final LoggingEvent loggingEvent = captorLoggingEvent.getValue();
+        final List<LoggingEvent> loggingEvents = captorLoggingEvent.getAllValues();
 
-        while (testValue != 0) {
+        for(LoggingEvent loggingEvent : loggingEvents)
+        {
             assertThat(loggingEvent.getLevel(), is(Level.INFO));
 
             assertThat(loggingEvent.getFormattedMessage(),
-                    is("generic animal noise countdown 3\n"
-                            + "generic animal noise countdown 2\n"
-                            + "generic animal noise countdown 1\n"));
-
-            testValue-=1;
+                    is("generic animal noise countdown "+testValue));
 
+            testValue--;
         }
     }
 

core-java/src/test/java/com/baeldung/java/listInitialization/ListInitializationUnitTest.java

@@ -9,28 +9,15 @@ import java.util.stream.Stream;
 import lombok.extern.java.Log;
 
 import org.junit.Assert;
-import org.junit.Rule;
 import org.junit.Test;
-import org.junit.rules.ExpectedException;
 
 @Log
 public class ListInitializationUnitTest {
 
-    @Rule
-    public ExpectedException exception = ExpectedException.none();
-
     @Test
     public void givenAnonymousInnerClass_thenInitialiseList() {
         List<String> cities = new ArrayList() {
-            // Inside declaration of the subclass
-
-            // You can have multiple initializer block
             {
-                log.info("Inside the first initializer block.");
-            }
-
-            {
-                log.info("Inside the second initializer block.");
                 add("New York");
                 add("Rio");
                 add("Tokyo");
@@ -47,11 +34,10 @@ public class ListInitializationUnitTest {
         Assert.assertTrue(list.contains("foo"));
     }
 
-    @Test
+    @Test(expected = UnsupportedOperationException.class)
     public void givenArraysAsList_whenAdd_thenUnsupportedException() {
         List<String> list = Arrays.asList("foo", "bar");
 
-        exception.expect(UnsupportedOperationException.class);
         list.add("baz");
     }
 

core-java/src/test/java/com/baeldung/regexp/optmization/OptimizedMatcherUnitTest.java

@@ -0,0 +1,109 @@
+package com.baeldung.regexp.optmization;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import static org.junit.Assert.assertTrue;
+
+public class OptimizedMatcherUnitTest {
+
+    private long time;
+    private long mstimePreCompiled;
+    private long mstimeNotPreCompiled;
+
+    private String action;
+
+    private List<String> items;
+
+    @Before
+    public void setup() {
+        Random random = new Random();
+        items = new ArrayList<String>();
+        long average = 0;
+
+        for (int i = 0; i < 100000; ++i) {
+            StringBuilder s = new StringBuilder();
+            int characters = random.nextInt(7) + 1;
+            for (int k = 0; k < characters; ++ k) {
+                char c = (char)(random.nextInt('Z' - 'A') + 'A');
+                int rep = random.nextInt(95) + 5;
+                for (int j = 0; j < rep; ++ j)
+                    s.append(c);
+                average += rep;
+            }
+            items.add(s.toString());
+        }
+
+        average /= 100000;
+        System.out.println("generated data, average length: " + average);
+    }
+
+
+    @Test
+    public void givenANotPreCompiledAndAPreCompiledPatternA_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() {
+
+        testPatterns("A*");
+        assertTrue(mstimePreCompiled < mstimeNotPreCompiled);
+    }
+
+    @Test
+    public void givenANotPreCompiledAndAPreCompiledPatternABC_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() {
+
+        testPatterns("A*B*C*");
+        assertTrue(mstimePreCompiled < mstimeNotPreCompiled);
+    }
+
+    @Test
+    public void givenANotPreCompiledAndAPreCompiledPatternECWF_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() {
+
+        testPatterns("E*C*W*F*");
+        assertTrue(mstimePreCompiled < mstimeNotPreCompiled);
+    }
+
+    private void testPatterns(String regex) {
+        time = System.nanoTime();
+        int matched = 0;
+        int unmatched = 0;
+
+        for (String item : this.items) {
+            if (item.matches(regex)) {
+                ++matched;
+            }
+            else {
+                ++unmatched;
+            }
+        }
+
+        this.action = "uncompiled: regex=" + regex + " matched=" + matched + " unmatched=" + unmatched;
+
+        this.mstimeNotPreCompiled = (System.nanoTime() - time) / 1000000;
+        System.out.println(this.action + ": " + mstimeNotPreCompiled + "ms");
+
+        time = System.nanoTime();
+
+        Matcher matcher = Pattern.compile(regex).matcher("");
+        matched = 0;
+        unmatched = 0;
+
+        for (String item : this.items) {
+            if (matcher.reset(item).matches()) {
+                ++matched;
+            }
+            else {
+                ++unmatched;
+            }
+        }
+
+        this.action = "compiled: regex=" + regex + " matched=" + matched + " unmatched=" + unmatched;
+
+        this.mstimePreCompiled = (System.nanoTime() - time) / 1000000;
+        System.out.println(this.action + ": " + mstimePreCompiled + "ms");
+    }
+}

eclipse/formatter.xml

@@ -1,297 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <profiles version="12">
-<profile kind="CodeFormatterProfile" name="newsx" version="12">
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_ellipsis" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_enum_declarations" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_annotation_declaration" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_allocation_expression" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_at_in_annotation_type_declaration" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.comment.new_lines_at_block_boundaries" value="true"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_constructor_declaration_parameters" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.comment.insert_new_line_for_parameter" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_package" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_enum_constant" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.blank_lines_after_imports" value="1"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_while" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.comment.insert_new_line_before_root_tags" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_annotation_type_member_declaration" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_declaration_throws" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.comment.format_javadoc_comments" value="false"/>
-<setting id="org.eclipse.jdt.core.formatter.indentation.size" value="8"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_postfix_operator" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_for_increments" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_type_arguments" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_for_inits" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_anonymous_type_declaration" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_semicolon_in_for" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.disabling_tag" value="@formatter:off"/>
-<setting id="org.eclipse.jdt.core.formatter.continuation_indentation" value="2"/>
-<setting id="org.eclipse.jdt.core.formatter.alignment_for_enum_constants" value="0"/>
-<setting id="org.eclipse.jdt.core.formatter.blank_lines_before_imports" value="1"/>
-<setting id="org.eclipse.jdt.core.formatter.blank_lines_after_package" value="1"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_binary_operator" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_multiple_local_declarations" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_enum_constant" value="16"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_angle_bracket_in_parameterized_type_reference" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.comment.indent_root_tags" value="true"/>
-<setting id="org.eclipse.jdt.core.formatter.wrap_before_or_operator_multicatch" value="true"/>
-<setting id="org.eclipse.jdt.core.formatter.enabling_tag" value="@formatter:on"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_closing_brace_in_block" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_parenthesized_expression_in_return" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.alignment_for_throws_clause_in_method_declaration" value="16"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_parameter" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.keep_then_statement_on_same_line" value="false"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_field" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_explicitconstructorcall_arguments" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_block" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_prefix_operator" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.blank_lines_between_type_declarations" value="1"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_brace_in_array_initializer" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_for" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_catch" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_angle_bracket_in_type_arguments" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_method" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_switch" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_anonymous_type_declaration" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_parenthesized_expression" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.never_indent_line_comments_on_first_column" value="false"/>
-<setting id="org.eclipse.jdt.core.compiler.problem.enumIdentifier" value="error"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_and_in_type_parameter" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_for_inits" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.indent_statements_compare_to_block" value="true"/>
-<setting id="org.eclipse.jdt.core.formatter.brace_position_for_anonymous_type_declaration" value="end_of_line"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_question_in_wildcard" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_annotation" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_invocation_arguments" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_switch" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.comment.line_length" value="260"/>
-<setting id="org.eclipse.jdt.core.formatter.use_on_off_tags" value="true"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_brackets_in_array_allocation_expression" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_enum_constant" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_method_invocation" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_assignment_operator" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_type_declaration" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_for" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.comment.preserve_white_space_between_code_and_line_comments" value="false"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_local_variable" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.brace_position_for_method_declaration" value="end_of_line"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_method_invocation" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.alignment_for_union_type_in_multicatch" value="16"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_for" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.number_of_blank_lines_at_beginning_of_method_body" value="0"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_closing_angle_bracket_in_type_arguments" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.keep_else_statement_on_same_line" value="false"/>
-<setting id="org.eclipse.jdt.core.formatter.alignment_for_binary_expression" value="16"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_parameterized_type_reference" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_array_initializer" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_multiple_field_declarations" value="insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_annotation" value="do not insert"/>
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-<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_annotation" value="do not insert"/>
-<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_switch" value="insert"/>
-</profile>
 <profile kind="CodeFormatterProfile" name="updated-formatter" version="12">
 <setting id="org.eclipse.jdt.core.formatter.insert_space_after_ellipsis" value="insert"/>
 <setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_enum_declarations" value="insert"/>

hibernate5/src/main/java/com/baeldung/hibernate/lifecycle/DirtyDataInspector.java

@@ -0,0 +1,26 @@
+package com.baeldung.hibernate.lifecycle;
+
+import org.hibernate.EmptyInterceptor;
+import org.hibernate.type.Type;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+
+public class DirtyDataInspector extends EmptyInterceptor {
+    private static final ArrayList<FootballPlayer> dirtyEntities = new ArrayList<>();
+
+    @Override
+    public boolean onFlushDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types) {
+        dirtyEntities.add((FootballPlayer) entity);
+        return true;
+    }
+
+    public static List<FootballPlayer> getDirtyEntities() {
+        return dirtyEntities;
+    }
+
+    public static void clearDirtyEntitites() {
+        dirtyEntities.clear();
+    }
+}

hibernate5/src/main/java/com/baeldung/hibernate/lifecycle/FootballPlayer.java

@@ -0,0 +1,35 @@
+package com.baeldung.hibernate.lifecycle;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "Football_Player")
+public class FootballPlayer {
+    @Id
+    @GeneratedValue
+    private long id;
+
+    @Column
+    private String name;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String toString() {
+        return "FootballPlayer{" + "id=" + id + ", name='" + name + '\'' + '}';
+    }
+}