minor cleanup in the java project

core-java/src/main/java/com/baeldung/equalshashcode/entities/ComplexClass.java

@@ -1,4 +1,4 @@
-package org.baeldung.equalshashcode.entities;
+package com.baeldung.equalshashcode.entities;
 
 import java.util.List;
 import java.util.Set;

core-java/src/main/java/com/baeldung/equalshashcode/entities/PrimitiveClass.java

@@ -1,4 +1,4 @@
-package org.baeldung.equalshashcode.entities;
+package com.baeldung.equalshashcode.entities;
 
 public class PrimitiveClass {
 

core-java/src/main/java/com/baeldung/equalshashcode/entities/Rectangle.java

@@ -1,4 +1,4 @@
-package org.baeldung.equalshashcode.entities;
+package com.baeldung.equalshashcode.entities;
 
 public class Rectangle extends Shape {
     private double width;

core-java/src/main/java/com/baeldung/equalshashcode/entities/Shape.java

@@ -1,4 +1,4 @@
-package org.baeldung.equalshashcode.entities;
+package com.baeldung.equalshashcode.entities;
 
 public abstract class Shape {
     public abstract double area();

core-java/src/main/java/com/baeldung/equalshashcode/entities/Square.java

@@ -1,4 +1,4 @@
-package org.baeldung.equalshashcode.entities;
+package com.baeldung.equalshashcode.entities;
 
 import java.awt.Color;
 

core-java/src/main/java/com/baeldung/executable/ExecutableMavenJar.java

@@ -1,4 +1,4 @@
-package org.baeldung.executable;
+package com.baeldung.executable;
 
 import javax.swing.JOptionPane;
 

core-java/src/test/java/org/baeldung/equalshashcode/entities/ComplexClassUnitTest.java

@@ -7,6 +7,8 @@ import java.util.List;
 import org.junit.Assert;
 import org.junit.Test;
 
+import com.baeldung.equalshashcode.entities.ComplexClass;
+
 public class ComplexClassUnitTest {
 
     @Test

core-java/src/test/java/org/baeldung/equalshashcode/entities/PrimitiveClassUnitTest.java

@@ -3,6 +3,8 @@ package org.baeldung.equalshashcode.entities;
 import org.junit.Assert;
 import org.junit.Test;
 
+import com.baeldung.equalshashcode.entities.PrimitiveClass;
+
 public class PrimitiveClassUnitTest {
 
     @Test

core-java/src/test/java/org/baeldung/equalshashcode/entities/SquareClassUnitTest.java

@@ -5,6 +5,8 @@ import java.awt.Color;
 import org.junit.Assert;
 import org.junit.Test;
 
+import com.baeldung.equalshashcode.entities.Square;
+
 public class SquareClassUnitTest {
 
     @Test