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45 lines
844 B
45 lines
844 B
package sample.duplicate;
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import java.awt.Graphics;
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import java.awt.Color;
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public class Ball {
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private int x, y;
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private Color color;
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private int radius = 30;
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private boolean isBackup = false;
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public Ball(int x, int y) {
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move(x, y);
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changeColor(Color.orange);
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}
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// This constructor is for a backup object.
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public Ball(Ball b) {
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isBackup = true;
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}
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// Adjust the position so that the backup object is visible.
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private void adjust() {
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if (isBackup) {
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this.x += 50;
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this.y += 50;
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}
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}
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public void paint(Graphics g) {
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g.setColor(color);
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g.fillOval(x, y, radius, radius);
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}
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public void move(int x, int y) {
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this.x = x;
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this.y = y;
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adjust();
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}
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public void changeColor(Color color) {
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this.color = color;
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}
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}
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