CIS 260 TestParam.java

Code

import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class TestParam extends Applet {
    String[] msg = {"Greetings, ", "Go away "};
    String toDisplay = "";
    String name = "";
    int currentMessage = 0;

    public void init() {
        setBackground(Color.yellow);
        name = getParameter("Name");
        if (name == null) name = "Anonymous";
        Button btn = new Button("Change message");
        add(btn);
        btn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                currentMessage = ++currentMessage % msg.length;
                setMessage(currentMessage);
                repaint();
            }
        });
        setMessage(currentMessage);
    }
    public void paint(Graphics g) {
        super.paint(g);
        g.drawString(toDisplay, 50, 150);
    }
    private void setMessage(int n) {
        toDisplay = msg[n] + name;
    }
}