public class TestArgs {    public static void main(String[] args) {        TestArgs t = new TestArgs();        t.sayHello();        //t.sayHello(new String[]{"hello China","hello BeiJing"});        t.sayHello("hello China","hello BeiJing");    }        //如下四个方法构成重载    //在类中一旦定义了重载的可变个数的形参的方法以后，如下的两个方法可以省略//    public void sayHello(){//        System.out.println("hello world!");//    }//    public void sayHello(String str1){//        System.out.println("hello " + str1);//    }    //可变个数的形参的方法    public void sayHello(String ... args){        for(int i = 0;i < args.length;i++){            System.out.println(args[i] + "$");        }        //System.out.println("=====");    }        public void sayHello(int i,String ... args){    //public void sayHello(String ... args,int i){        System.out.println(i);                for(int j = 0;j < args.length;j++){            System.out.println(args[j] + "$");        }    }        public void sayHello1(String[] args){        for(int i = 0;i < args.length;i++){            System.out.println(args[i]);        }    }        //可变个数形参的使用的例子//    public int getSum(int i,int j){//        return i + j;//    }//    public int getSum(int i,int j,int k){//        return i + j + k;//    }    public int getSum(int ... args){        int sum = 0;        for(int i = 0;i < args.length;i++){            sum += args[i];        }        return sum;    }        }