Refactor core-java (#2324)

core-java/src/main/java/com/baeldung/concurrent/cyclicbarrier/CyclicBarrierExample.java

@@ -4,22 +4,20 @@ import java.util.concurrent.CyclicBarrier;
 
 public class CyclicBarrierExample {
 
-	public void start() {
-		CyclicBarrier cyclicBarrier = new CyclicBarrier(3, () -> {
-			// Task
-			System.out.println("All previous tasks are completed");
-		});
+    public void start() {
+        CyclicBarrier cyclicBarrier = new CyclicBarrier(3, () -> {
+            // Task
+            System.out.println("All previous tasks are completed");
+        });
 
-		Thread t1 = new Thread(new Task(cyclicBarrier), "T1");
-		Thread t2 = new Thread(new Task(cyclicBarrier), "T2");
-		Thread t3 = new Thread(new Task(cyclicBarrier), "T3");
-
-		if (!cyclicBarrier.isBroken()) {
-			t1.start();
-			t2.start();
-			t3.start();
-		}
-
-	}
+        Thread t1 = new Thread(new Task(cyclicBarrier), "T1");
+        Thread t2 = new Thread(new Task(cyclicBarrier), "T2");
+        Thread t3 = new Thread(new Task(cyclicBarrier), "T3");
 
+        if (!cyclicBarrier.isBroken()) {
+            t1.start();
+            t2.start();
+            t3.start();
+        }
+    }
 }

core-java/src/main/java/com/baeldung/concurrent/cyclicbarrier/Task.java

@@ -6,20 +6,19 @@ import java.util.concurrent.CyclicBarrier;
 public class Task implements Runnable {
 
     private CyclicBarrier barrier;
-    
-	public Task(CyclicBarrier barrier) {
-		this.barrier = barrier;
-	}
 
-	@Override
-	public void run() {
+    public Task(CyclicBarrier barrier) {
+        this.barrier = barrier;
+    }
+
+    @Override
+    public void run() {
         try {
-        	System.out.println("Thread : "+ Thread.currentThread().getName() + " is waiting");
-			barrier.await();
-			System.out.println("Thread : "+ Thread.currentThread().getName() + " is released");
-		} catch (InterruptedException | BrokenBarrierException e) {
-			e.printStackTrace();
-		}
-	}
-
+            System.out.println("Thread : " + Thread.currentThread().getName() + " is waiting");
+            barrier.await();
+            System.out.println("Thread : " + Thread.currentThread().getName() + " is released");
+        } catch (InterruptedException | BrokenBarrierException e) {
+            e.printStackTrace();
+        }
+    }
 }

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

@@ -4,7 +4,7 @@ public class Rectangle extends Shape {
     private double width;
     private double length;
 
-    public Rectangle(double width, double length) {
+    Rectangle(double width, double length) {
         this.width = width;
         this.length = length;
     }

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

@@ -1,11 +1,10 @@
 package org.baeldung.executable;
 
-import javax.swing.JOptionPane;
+import javax.swing.*;
 
 public class ExecutableMavenJar {
 
     public static void main(String[] args) {
         JOptionPane.showMessageDialog(null, "It worked!", "Executable Jar with Maven", 1);
     }
-
 }