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22 lines
464 B
22 lines
464 B
/*定义一个抽象类draw*/
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abstract class draw{
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public abstract void draw();
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}
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class circle extends draw{
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public void draw(){
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System.out.println("画一个圆形");
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}
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}
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class retangle extends draw{
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public void draw(){
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System.out.println("画一个矩形");
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}
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}
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class Main{
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public static void main (String args[]){
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draw d1=new circle();
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draw d2=new retangle();
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d1.draw();
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d2.draw();
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}
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}
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