import javax.swing.JOptionPane;
public class HalloWeltJOptionPaneeigen{
public static void main(String[] args) {
JOptionPane.showMessageDialog(
null,"Hallo Welt");
}
}import javax.swing.JOptionPane;
public class HalloWeltJOptionPaneeigen{
public static void main(String[] args) {
JOptionPane.showMessageDialog(
null,"Hallo Welt");
}
}