swing - Closing java popup frame without exiting program -

public buttongrid(int width, int length){ //constructor             frame.settitle("mpc");             frame.setlayout(new gridlayout(width,length)); //set layout             grid=new jbutton[width-1][length]; //allocate size of grid             for(int y=0; y<length; y++){                     for(int x=0; x<width-1; x++){                             grid[x][y]=new jbutton("("+x+","+y+")"); //creates new button                                  frame.add(grid[x][y]); //adds button grid                             grid[x][y].addactionlistener(this);                             grid[x][y].addkeylistener(this);                             //grid[x][y].setmnemonic(keyevent.vk_0);                             grid[x][y].setpreferredsize(new dimension(75,75));                     }             }              for(int =0; i<boxlist.length; i++)                 box.additem(boxlist[i]);             box.addactionlistener(this);             frame.add(box);             frame.add(met_speed);             frame.add(play);             play.addactionlistener(this);               frame.setdefaultcloseoperation(jframe.exit_on_close);             frame.pack(); //sets appropriate size frame             frame.setvisible(true); //makes frame visible        }     public void newwindow(){         jframe frame1 = new jframe();          frame1.setlayout(new gridbaglayout());         gridbagconstraints gbc = new gridbagconstraints();         jtextfield[] btn = new jtextfield[12];         jlabel[] lbl = new jlabel[12];         jlabel name = new jlabel("preset name");         jtextfield name1 = new jtextfield();         name1.setpreferredsize(new dimension(100,25));           gbc.gridx = 0;         gbc.gridy = 0;         frame1.add(name, gbc);         gbc.gridx++;         frame1.add(name1, gbc);          gbc.gridx = 0;         gbc.gridy = 1;         for(int = 0; i<12; i++){             lbl[i] = new jlabel("button" + (i+1));             frame1.add(lbl[i], gbc);             gbc.gridy++;         }          gbc.gridx = 1;         gbc.gridy = 1;         for(int = 0; i<12; i++){             btn[i] = new jtextfield();             btn[i].setpreferredsize(new dimension(75,25));             frame1.add(btn[i], gbc);             gbc.gridy++;         }           gbc.gridx = 0;         gbc.gridy = 14;         jbutton save = new jbutton("save");         frame1.add(save, gbc);          frame1.setdefaultcloseoperation(jframe.exit_on_close);         frame1.pack(); //sets appropriate size frame         frame1.setvisible(true); //makes frame visible      } 

the first function buttongrid called in main , contains real program. after button pressed, newwindow() called popup. point, works fine, when close frame1, closes frame , ends program.

am doing correctly or there need add?

you may try this:

frame1.setdefaultcloseoperation(jframe.dispose_on_close);//<-- destroy frame