Java面向对象练习题继承之人种

//People类

package 继承;

public class People {
	
	private String name;
	private double height;
	private double weight;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public double getHeight() {
		return height;
	}
	public void setHeight(double height) {
		this.height = height;
	}
	public double getWeight() {
		return weight;
	}
	public void setWeight(double weight) {
		this.weight = weight;
	}
	
	public void speakHello()
	{
		System.out.println("Hello");
	}

}

　　

//Chinapeople类

package 继承;


//继承
//Object 是所有类的父类
public class Chinapeople extends People {

	public void Chinesekongfu()
	{
		System.out.println("坐如钟，站如松");
	}
	
	//重写 也叫覆盖
	public void speakHello()
	{
		System.out.println("你好");
	}
}

　　

//Americanpeople类

package 继承;

public class Americanpeople extends People {
	
	public void americanBoxing()
	{
		System.out.println("直拳，勾拳");
	}
}

　　

//Testpeople类

package 继承;

public class Textpeople {

	public static void main(String[] args) {
		
		People p=new People();
		p.speakHello();
		
		System.out.println("中国人：");
		Chinapeople cp=new Chinapeople();
		cp.speakHello();
		cp.Chinesekongfu();
		
		System.out.println("美国人：");
		Americanpeople ap=new Americanpeople();
		ap.speakHello();
		ap.americanBoxing();
	}

}

　　

运行结果