Java Programming

I am trying to make a connect four program for class, and i am trying to make it so the red check piece move down. But instead it move left n right -.-, ive tried changing the coordinates but then the piece would just spin in circle or spins out of control. Here is the code i have right now, can someone help me please =D .

import java.awt.*;*

*public class Circle{*

*private int centerX, centerY, radius;*
*private Color color;*
*private int direction, velocity;*
*private boolean filled;*

*public Circle(int x, int y, int r, Color c){*
*centerX = x;*
*centerY = y;*
*radius = r;*
*color = c;*
*direction = 0;*
*velocity = 0;*
*filled = false;*
*}*

*public void draw(Graphics g){*
*Color oldColor = g.getColor();*
*g.setColor(color);*
*// Translates circle's center to rectangle's origin for drawing.*
*if (filled)*
*g.fillOval(centerX - radius, centerY - radius, radius*  2, radius  *2);*
*else*
*g.drawOval(centerX - radius, centerY - radius, radius*  2, radius  *2);*
*g.setColor(oldColor);*
*}*

*public void fill(Graphics g){*
*Color oldColor = g.getColor();*
*g.setColor(color);*
*// Translates circle's center to rectangle's origin for drawing.*
*g.fillOval(centerX - radius, centerY - radius, radius*  2, radius  *2);*
*g.setColor(oldColor);*
*}*

*public boolean containsPoint(int x, int y){*
*int xSquared = (x - centerX)*  (x - centerX);
int ySquared = (y - centerY)  *(y - centerY);*
*int radiusSquared = radius*  radius;
return xSquared  +ySquared - radiusSquared <= 0;+
+}+

+public void move(int xAmount, int yAmount){+
+centerX = centerX+  xAmount;
centerY = centerY  +yAmount;+
+}+

+public int getRadius(){+
+return radius;+
+}+

+public int getX(){+
+return centerX;+
+}+

+public int getY(){+
+return centerY;+
+}+

+public void setVelocity(int v){+
+velocity = v;+
+}+   

+public void setDirection(int d){+
+direction = d % 360;+
+}+

+public void turn(int degrees){+
+direction = (direction+  degrees) % 360;
}

// Moves the circle in the current direction using its
// current velocity
public void move(){
move((int)(velocity  *Math.cos(Math.toRadians(direction))),*
*(int)(velocity*  Math.sin(Math.toRadians(direction))));
}

public void setFilled(boolean b){
filled = b;
}

}

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

public class ColorPanel extends JPanel{

private Circle circle;
private javax.swing.Timer timer;

public ColorPanel(Color backColor, int width, int height){
setBackground(backColor);
setPreferredSize(new Dimension(width, height));
// Circle with center point (25, 100) and radius 25
circle = new Circle(25, height / 2, 25, Color.red);
circle.setFilled(true);
// Aim due west to hit left boundary first
circle.setDirection(90);
// Move 5 pixels per unit of time
circle.setVelocity(5);
// Move every 5 milliseconds 
timer = new javax.swing.Timer(5, new MoveListener());
timer.start();
}

public void paintComponent(Graphics g){
super.paintComponent(g);
circle.fill(g);      
}

private class MoveListener implements ActionListener{

public void actionPerformed(ActionEvent e){
int x = circle.getX();
int radius = circle.getRadius();
int width = getWidth();
// Check for boundaries and reverse direction
// if necessary
if (x - radius <= 0 || x + radius >= width)
circle.turn(90);
circle.move();
repaint();
}
}
}

with that code my circle just spins back n forth rapidly. How can i make it so it drop to a certain location everytime i click the mouse?