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31 lines
708 B
31 lines
708 B
// 1. 定义父类 Shape1
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class Shape1 {
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// 父类的 draw 方法
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public void draw() {
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System.out.println("绘制形状");
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}
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}
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// 2. 定义子类 Circle 继承 Shape1 并重写 draw 方法
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class Circle extends Shape1 {
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@Override
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public void draw() {
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System.out.println("绘制圆形");
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}
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}
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// 3. 定义子类 Rectangle 继承 Shape1 并重写 draw 方法
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class Rectangle extends Shape1 {
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@Override
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public void draw() {
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System.out.println("绘制矩形");
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}
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}
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// 4. 定义工具类，包含 drawShape 方法
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class ShapeDrawer {
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// 接收 Shape1 类型参数，调用 draw 方法
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public void drawShape(Shape1 s) {
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s.draw();
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}
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}
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