以下是设置：
我有一个名为Sprite的类，它包含一个名为Animal的子类的图像，它是World类中动物数组的一部分。使用完成所有图形的Canvas类，我如何才能获得图像？
Survival.class - 主类
package survival;
import javax.swing.*;
public class Survival {
public static void main(String[] args) {
JFrame frame = new JFrame("Survival");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(1000, 750);
Canvas g = new Canvas();
frame.add(g);
frame.setVisible(true);
World environment = new World(10, 25, 1000, 750);
environment.step();
}
}
Canvas.class - 处理所有绘图
package survival;
import java.awt.*;
import javax.swing.*;
public class Canvas extends JPanel {
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2D = (Graphics2D) g;
}
}
World.class - 创造动物
package survival;
public class World {
private int width = 1000;
private int height = 750;
private Animal[] animals;
private Plant[] plants;
public World(int animalNumber, int plantNumber, int width, int height) {
this.width = width;
this.height = height;
animals = new Animal[animalNumber];
for (int i = 0; i < animalNumber; i++) {
animals[i] = new Animal(0,0);
}
plants = new Plant[plantNumber];
for (int i = 0; i < plantNumber; i++) {
plants[i] = new Plant(0,0);
}
}
public void step() {
for (int i = 0; i < plants.length; i++) {
plants[i].move();
}
for (int i = 0; i < animals.length; i++) {
animals[i].move();
}
}
public int getWidth() {
return width;
}
public int getHeight() {
return height;
}
}
Sprite.class - 动物的超类，包含图像！
package survival;
public class Sprite {
private Image; //IMAGE I NEED!!!
private double x;
private double y;
public Sprite(int x, int y) {
this.x = x;
this.y = y;
}
public void move() {
x += 1;
y += 1;
}
public void setX(int x) {
this.x = x;
}
public void setY(int y) {
this.y = y;
}
}
Animal.class - 动物的子类
package survival;
public class Animal extends Sprite {
public Animal(int x, int y) {
super(x, y);
}
}