testabstractclass.java

主要是对于JAVA的编程的基本语言 希望能够帮得上你。

package class_object;

abstract class Bird{
	abstract void sing();
	abstract void fly();
}

class MyBird extends Bird{
	@Override
	void sing() {
		System.out.println("The bird is singing.");		
	}
	
	void fly(){
		System.out.println("The bird is flying in the sky.");
	}
	
}

public class TestAbstractClass {
	public static void main(String[] args){		
		MyBird b=new MyBird();
		b.sing();	
		b.fly();
	}
}