java学习之implemetns例程

//声明Hello接口
interface Hello {

    public void sayhello();
}
//声明World接口
interface World{
    public void sayworld();
}

//定义类Student,继承Hello,World接口
class Student implements Hello,World{
    //复写两个接口
    public void sayhello()
    {
        System.out.print("hello");
    }
    public void sayworld()
    {
        System.out.println(" world!"+"\n");
    }
}

public class Test{
    public static void main(String args[])
    {
        Student p = new Student();
        p.sayhello();
        p.sayworld();
    }
}