fixed a bug with double windows

Author: Rustam-Z

Main.java

@@ -2,7 +2,7 @@
 import javax.swing.*; 
 import java.awt.event.*; 
 
-public class Main extends JFrame {
+public class Main extends JFrame {    
     // Menubar
 	static JMenuBar menuBar;
 
@@ -48,7 +48,7 @@ public class Main extends JFrame {
 
         setTitle("Eightsoft");
         setSize(800, 800);
-        // setLocation(200, 100);
+        setLocation(300, 5);
         setVisible(true);
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     }
@@ -64,6 +64,7 @@ public void actionPerformed(ActionEvent e) {
             else if (e.getSource() == menuItem2) {
                 // Creating Object
                 Sorting sort = new Sorting();   
+                setVisible(false); // will close the previous window
                 System.out.println("Menu Item 2 choosed");
             }
             else if (e.getSource() == menuItem2) {

Sorting.java

@@ -54,15 +54,9 @@ public class Sorting extends Main {
         pPanel1.setBackground(Color.CYAN);
         pPanel2.setBackground(Color.YELLOW);
 
-        // pPanel1.add(p1Sorting);
-        // pPanel2.add(p2Sorting);
-        // p1Sorting.setVisible(true);
-        // p2Sorting.setVisible(true);
-
         // Add Panels to the panel
         add(pPanel1, BorderLayout.NORTH);
         add(pPanel2, BorderLayout.CENTER);
 
     }
-
 }