java - Swing JFrame button action listener not working -

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i want move 1 jframe jframe after pressing jbutton named login. attaching both frame code below, if there correction or 1 want give me instruction or guideline can give.

import java.awt.dimension; import java.awt.rectangle; import java.awt.event.actionevent; import java.awt.event.actionlistener; import javax.swing.*; public class login implements actionlistener { private jframe jframe = null;   private jpanel jcontentpane = null; private jlabel id = null; private jtextfield userid = null; private jlabel pass = null; private jpasswordfield password = null; private jbutton login = null;            private jframe getjframe()      {         if (jframe == null)          {             jframe = new jframe();     jframe.setsize(new dimension(346, 301));             jframe.setresizable( false );     jframe.settitle("shree datta digambar");             jframe.setdefaultcloseoperation(jframe.exit_on_close);     jframe.setcontentpane(getjcontentpane());         }         return jframe; }     private jpanel getjcontentpane()      {         if (jcontentpane == null)          {             pass = new jlabel();     pass.setbounds(new rectangle(21, 105, 116, 27));         pass.settext("password");     id = new jlabel();             id.setbounds(new rectangle(21, 54, 119, 26));     id.settext("enter user id");             jcontentpane = new jpanel();     jcontentpane.setlayout(null);     jcontentpane.add(id, null);     jcontentpane.add(getuserid(), null);             jcontentpane.add(pass, null);     jcontentpane.add(getpassword(), null);     jcontentpane.add(getlogin(), null);         }         return jcontentpane; }     private jtextfield getuserid()      {         if (userid == null)          {             userid = new jtextfield();     userid.setbounds(new rectangle(164, 53, 140, 26));         }         return userid; }    private jpasswordfield getpassword()      {         if (password == null)          {             password = new jpasswordfield();     password.setbounds(new rectangle(165, 106, 137, 27));         }         return password; } private jbutton getlogin()      {         if (login == null)          {             login = new jbutton();     login.setbounds(new rectangle(165, 169, 136, 27));     login.settext("login");             login.addactionlistener((actionlistener) this);         }         return login; }  public static void main(string[] args)      {         login l=new login();         jframe f=new jframe();                    f=l.getjframe();         f.setlocation(300,150);         f.setvisible(true);     }     public void actionperformed(actionevent e)      {         if(e.getsource()==login)         {             if(userid.gettext().equals("")||password.gettext().equals(""))             {                 joptionpane.showmessagedialog(null, "please enter details");             }             else             {                 if(userid.gettext().equals("digambar")&&password.gettext().equals("dalvi"))                 {                                                      joptionpane.showmessagedialog(null,"welcome customer details of papers");                     getjframe().dispose();                       jmenubar menubar = new jmenubar();                     mainmenu f = new mainmenu();                                               }                 else                 {                     joptionpane.showmessagedialog(null,"sorry please enter valid details");                     userid.settext("");                     password.settext("");                 }             }         }      }        }

second frame code is

       import java.awt.event.actionevent;        import java.awt.event.actionlistener;        import javax.swing.jframe;        import javax.swing.jmenu;        import javax.swing.jmenubar;        import javax.swing.jmenuitem;        public class mainmenu extends jframe implements actionlistener        {   public static void main(string[] args)  {     mainmenu f=new mainmenu();     f.setvisible(true);     f.setsize(646,401);     f.setresizable( false );     f.settitle("shree datta digambar");     f.setdefaultcloseoperation(jframe.exit_on_close);      jmenubar menubar = new jmenubar();     f.setjmenubar(menubar);      jmenu customer=new jmenu("customer");     menubar.add(customer);     jmenu paper=new jmenu("paper");     menubar.add(paper);     jmenu edit=new jmenu("edit");     menubar.add(edit);                   jmenu view=new jmenu("view");     menubar.add(view);      jmenu bill=new jmenu("bill");     menubar.add(bill);     jmenu help=new jmenu("help");     menubar.add(help);      jmenuitem newitem = new jmenuitem("new customer");     customer.add(newitem);     jmenuitem deleteitem = new jmenuitem("delete customer");     customer.add(deleteitem);      jmenuitem addpaperitem = new jmenuitem("add paper");     paper.add(addpaperitem);     jmenuitem deletepaperitem = new jmenuitem("delete paper");     paper.add(deletepaperitem);      jmenuitem customer_detail = new jmenuitem("customer detail");     edit.add(customer_detail);     jmenuitem paper_detail = new jmenuitem("paper detail");     edit.add(paper_detail);      jmenuitem perticular_customer_detail = new jmenuitem("perticular customer detail");     view.add(perticular_customer_detail);      jmenuitem customer_bill = new jmenuitem("customer bills");     bill.add(customer_bill);      newitem.addactionlistener(new mainmenu());     deleteitem.addactionlistener(new mainmenu());     addpaperitem.addactionlistener(new mainmenu());     deletepaperitem.addactionlistener(new mainmenu());     customer_detail.addactionlistener(new mainmenu());     paper_detail.addactionlistener(new mainmenu());     perticular_customer_detail.addactionlistener(new mainmenu());     customer_bill.addactionlistener(new mainmenu());      customer.addactionlistener(new mainmenu());             paper.addactionlistener(new mainmenu());     edit.addactionlistener(new mainmenu());     view.addactionlistener(new mainmenu());     bill.addactionlistener(new mainmenu());     help.addactionlistener(new mainmenu()); } @override public void actionperformed(actionevent e) {     throw new unsupportedoperationexception("not supported yet."); } }

you can use anonymous inner classes jmenuitem,

 jmenuitem newitem = new jmenuitem("new customer");    newitem.addactionlistener(new actionlistener() {            public void actionperformed(actionevent e) {                mainmenu.this.dispose();                new_customer nn = new new_customer() {};            }        });

or

let mainmenu implement actionlistener interface (class mainmenu implements actionlistener)

jmenuitem newitem = new jmenuitem("new customer"); newitem.addactionlistener(this); newitem.setactioncommand("new customer");  public void actionperformed(actionevent e)  {     if(e.getactioncommand().equals("new customer"))     {         system.out.println("clicked new customer menu");         mainmenu.this.dispose();         new_customer nn = new new_customer() {};     } }

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