java - i want to hide the first frame when the new frame window appear -

i want hide previous window frame when new window appear after pressing submit button,how hide previous window or close without pressing cross button

enter code here public static void main(string[] args)   {          jframe frame = new jframe("project format creator");          jbutton btn5 = new jbutton("submit");          jpanel panel = new jpanel(new gridbaglayout());         gridbagconstraints cst = new gridbagconstraints();          cst.fill = gridbagconstraints.horizontal;         cst.gridx = 0;         cst.gridwidth = 1;          cst.weightx = 0.1;         cst.gridy = 8;       //third row         panel.add(btn5,cst);        btn5.addactionlistener(new actionlistener()       {          public void actionperformed(actionevent e)          {             jframe frame1 = new jframe("project format creator");             frame1.setdefaultcloseoperation(jframe.exit_on_close);             frame1.setsize(300,300);//int width int height             frame1.getcontentpane().add(panel);             frame1.setvisible(true);           }      });             frame.setdefaultcloseoperation(jframe.exit_on_close);          frame.setsize(300,300);//int width int height          frame.getcontentpane().add(panel);          frame.setvisible(true); }  

use frame.setvisible(false); if you're going show jframe again, or frame.dispose(); if you're done it.

   public void actionperformed(actionevent e)      {         frame.dispose(); // dispose old frame         jframe frame1 = new jframe("project format creator");         frame1.setdefaultcloseoperation(jframe.exit_on_close);         frame1.setsize(300,300);//int width int height         frame1.getcontentpane().add(panel);         frame1.setvisible(true);      }