java---GUI
import java.util.concurrent.TimeUnit;
import javax.swing.JFrame; import javax.swing.JLabel;
public class Ex_1 {
public static void main(String[] args) throws Exception {
JFrame frame = new JFrame("Hello Swing");
JLabel label = new JLabel("A Label");
frame.add(label);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(300, 100);
frame.setVisible(true);
TimeUnit.SECONDS.sleep(1);
label.setText("Hey! This is Different!");
}
}