swing - Java setBounds() method (JFrame) -

hi im using setbounds method open window whith size. size pass in argument size of window including bars of frame. how can set dimensions content?

there 2 ways fix this:

• take account border of frame when setting bounds of frame
• override getpreferredsize() of content pane of jframe , call pack() on frame.

here demo of 2 techniques:

import java.awt.dimension; import java.awt.insets; import java.awt.rectangle;  import javax.swing.jframe; import javax.swing.jpanel; import javax.swing.swingutilities;  public class test {      protected void initui() {         jframe frame = new jframe("insets technique");         frame.setdefaultcloseoperation(jframe.exit_on_close);         frame.setvisible(true);         insets = frame.getinsets();         system.out.println(i);         rectangle bounds = new rectangle(50, 100, 400, 500);         bounds.width += i.right + i.left;         bounds.height += i.bottom + i.top;         frame.setbounds(bounds);     }      protected void initui2() {         jframe frame = new jframe("preferred size technique");         frame.setdefaultcloseoperation(jframe.exit_on_close);         frame.setcontentpane(new jpanel() {             @override             public dimension getpreferredsize() {                 return new dimension(400, 500);             }         });         frame.pack();         frame.setlocation(50, 100);         frame.setvisible(true);     }      public static void main(string[] args) {         swingutilities.invokelater(new runnable() {             @override             public void run() {                 test test = new test();                 test.initui();                 test.initui2();             }         });     } }