demo

package Percobaan;

import javax.swing.JOptionPane;

class ExceptionA extends Exception {
}

class ExceptionB extends ExceptionA {
}

class ExceptionC extends ExceptionB {
}

public class Demo {

    public static void main(String args[]) {
        try {
            throw new ExceptionC();
        } catch (ExceptionA a) {
            JOptionPane.showMessageDialog(
                    null, a.toString(), "Exception",
                    JOptionPane.INFORMATION_MESSAGE);
        }
        try {
            throw new ExceptionB();
        } catch (ExceptionA b) {
            JOptionPane.showMessageDialog(
                    null, b.toString(), "Exception",
                    JOptionPane.INFORMATION_MESSAGE);
        }
        System.exit(0);
    }
}