Question

There 2 parts to complete:

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;

public class Q4 extends JFrame {
private int xPos, yPos;
public Q4() {
JPanel drawPanel = new JPanel() {
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g); // paint parent's background
//complete this:

}
};
drawPanel.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
//complete this :- set the xPos, yPos

}
   });

setContentPane(drawPanel);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setTitle("Mouse-Click Demo");
setSize(400, 250);
setVisible(true);
}

public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new Q4();
}
});
}
}

Answer 1

Solution:

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;

public class Q4 extends JFrame {
private int xPos, yPos;
public Q4() {
JPanel drawPanel = new JPanel() {
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g); // paint parent's background
g.setFont(new Font("Monospaced", Font.BOLD, 20));
//complete this
g.fillOval(xPos-2,yPos-2,4,4); // using fillOval() method
g.drawString(xPos+","+yPos,xPos+10,yPos-10); // using drawString() method to print positions
g.drawString("Mouse Clicked",xPos+10,yPos+20); // using drawString() method to print "Mouse Clicked with Oval")

}
};
drawPanel.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
//complete this
// remember to call repaint
xPos=evt.getX(); // set xPos value with x coordinate of MouseEvent
yPos=evt.getY(); // set Ypos value with y coordinate of Mouse Event
repaint();
}
});

setContentPane(drawPanel);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setTitle("Mouse-Click Demo");
setSize(400, 250);
setVisible(true);
}

public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new Q4();
}
});
}
}

Please give thumbsup, if you like it. Thanks.