MDI Open JFreame
// TODO add your handling code here: jInternalFrame1.setSize(400, 300); jInternalFrame1.setLocation(0, 0); jDesktopPane1.add(jInternalFrame1); try { jInternalFrame1.setMaximum(true); } catch (PropertyVetoException ex) { Logger.getLogger(DashBoard.class.getName()).log(Level.SEVERE, null, ex); } jInternalFrame1.setVisible(true);