import javax.swing.JInternalFrame; import java.awt.event.*; import java.awt.*; /* Used by InternalFrameDemo.java. */ public class MyInternalFrame extends JInternalFrame { static int openFrameCount = 0; static final int xOffset = 30, yOffset = 30; public MyInternalFrame() { super("Document #" + (++openFrameCount), true, //resizable true, //closable true, //maximizable true);//iconifiable //...Create the GUI and put it in the window... //...Then set the window size or call pack... setSize(300,300); //Set the window's location. setLocation(xOffset*openFrameCount, yOffset*openFrameCount); } }