~cpp
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.*;
public class FirstJava extends JFrame {
int array [][] = new int [3][3];
int x,y;
int i;
int count;
boolean isStarted = false;
public FirstJava() {
addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
x = e.getX();
y = e.getY();
System.out.println("x 좌표 : " + x);
System.out.println("y 좌표 : " + y);
if (x >= 0 && x <= 200 & y >= 0 && y <= 200 && array[0][0] ==0){
if(count%2 == 0)
array[0][0]=1;
else
array[0][0]=2;
count++;
}
else if(x >= 200 && x <= 400 & y >= 0 && y <= 200&& array[0][1] ==0){
if(count%2 == 0)
array[0][1]=1;
else
array[0][1]=2;
count++;
}
else if(x >= 400 && x <= 600 & y >= 0 && y <= 200&& array[0][2] ==0){
if(count%2 == 0)
array[0][2]=1;
else
array[0][2]=2;
count++;
}
else if(x >= 0 && x <= 200 & y >= 200 && y <= 400&& array[1][0] ==0){
if(count%2 == 0)
array[1][0]=1;
else
array[1][0]=2;
count++;
}
else if(x >= 200 && x <= 400 & y >= 200 && y <= 400&& array[1][1] ==0){
if(count%2 == 0)
array[1][1]=1;
else
array[1][1]=2;
count++;
}
else if(x >= 400 && x <= 600 & y >= 200 && y <= 400&& array[1][2] ==0){
if(count%2 == 0)
array[1][2]=1;
else
array[1][2]=2;
count++;
}
else if(x >= 0 && x <= 200 & y >= 400 && y <= 600&& array[2][0] ==0){
if(count%2 == 0)
array[2][0]=1;
else
array[2][0]=2;
count++;
}
else if(x >= 200 && x <= 400 & y >= 400 && y <= 600&& array[2][1] ==0){
if(count%2 == 0)
array[2][1]=1;
else
array[2][1]=2;
count++;
}
else if(x >= 400 && x <= 600 & y >= 400 && y <= 600&& array[2][2] ==0){
if(count%2 == 0)
array[2][2]=1;
else
array[2][2]=2;
count++;
}
isStarted = true;
repaint();
}
});
}
public void paint(Graphics g) {
g.drawLine(200,0,200,600);
g.drawLine(400,0,400,600);
g.drawLine(0,200,600,200);
g.drawLine(0,400,600,400);
if( isStarted ){
for (i=0;i<3;i++)
{
for (int j=0;j<3;j++)
{
if (array[i][j] == 1)
g.fillOval(50+200*j,50+200*i,100,100);
else if (array[i][j] == 2)
g.drawOval(50+200*j,50+200*i,100,100);
}
}
}
}
public static void main(String[] args) {
FirstJava helloworld = new FirstJava();
helloworld.setBounds(100, 100, 600, 600);
helloworld.show();
}
}
