单击按钮后打开一个新的 JFrame 并关闭上一个

Question

How can I code a button that, when clicked, closes the current JFrame and opens a new one?

This is what I have so far, but the old frame stays open:

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
    practise1 s = new practise1();
    s.setVisible(true);
} 

I have tried using .close() after the first { but it gives me an error.

Answer 1

If you plan on using the originial JFrame later, use setVisible(false) on the original JFrame. If you plan on closing the first JFrame and never reusing it, you can use dispose() .

Answer 2

  public void actionPerformed(ActionEvent e)
  {
    if(e.getSource () == button)
    {
      test = new JFrame();
      test.setSize(300,300);
      test.setVisible (true);
      this.dispose();

    }
  }

Dispose AFTER creating the new Frame.

Answer 3

Thanks for the help everyone. I got it working using the this.dispose(); method

Answer 4

Lets say current Frame is FirstFrame and clicking on JButton goes to NewFrame

import javax.swing.*;

public class FirstFrame extends Jframe implements ActionListener{


  JButton button;    

  public FirstFrame(){
   setVisible(true);
   setSize(500,500);

    button=new JButton("Click me");
    button.addActionListner(this);
   add(button);     
  }

  public static void main(String[] args)
  {
   new FirstFrame();
  }

  public void actionPerformed(ActionEvent e)
   {
   if(e.getSource()==button)
    {
        NewFrame nf=new NewFrame();    // Clicking on the Button will OPEN new Frame in NewFrame.java file 
        dispose();  //this method will close the FirstFrame 
     }
   }


}

Answer 5

you just put this in your code :

(the exemple here i JButton to do this with the ActionPerformed method)

/**********************************************************************/

private void openBTNActionPerformed(java.awt.event.ActionEvent evt) {                                                  
        dispose();
        FrameTarget t = new FrameTaregt();
        t.setVisible(true);
        //set the size : 1250 pixels de width and 720 pixels de height
        t.setSize(1250, 720);
        //make the frame in the center wuth this 
        t.setLocationRelativeTo(null);
        t.setResizable(true);     

}