import javax.swing.JFrame;
import javax.swing.UIManager;
public class GetCrossPlatformLookAnd {
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
} catch (Exception e) {
System.err.println("Look and feel not set.");
}
JFrame aWindow = new JFrame("This is the Window Title");
aWindow.setBounds(50, 100, 300, 300);
aWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
aWindow.setVisible(true);
}
}