In this example we are going to see how to use Java JOptionPane Warning Message.
Java Code:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | import javax.swing.*; public class Main { JFrame f; Main() { f = new JFrame(); JOptionPane.showMessageDialog(f, "Error in Upload.", "Alert", JOptionPane.WARNING_MESSAGE); } public static void main(String[] args) { new Main(); } } |
Output:
