Java方法05：可变参数

 

public class Demo03 {
    public static void main(String[] args) {
        Demo03 demo03 = new Demo03();
        demo03.test(1);//输出1

    }

    public void test(int... i){
        System.out.println(i[0]);
    }
}

public class Demo03 {
    public static void main(String[] args) {
        Demo03 demo03 = new Demo03();
        demo03.test(1,2,3,4,5);//输出1

    }

    public void test(int... i){
        System.out.println(i[0]);//1
        System.out.println(i[1]);//2
        System.out.println(i[2]);//3
        System.out.println(i[3]);//4
        System.out.println(i[4]);//5
    }
}

public class Demo04 {
    public static void main(String[] args) {
        //调用可变参数的方法
        printMax(34,3,3,2,56.5);//The max value is34.0
        printMax(new double[]{1,2,3});//The max value is3.0
    }
    public static void printMax(double...numbers){
        if(numbers.length == 0){
            System.out.println("No argument passed");
            return;
        }
        double result = numbers[0];

        //排序!
        for(int i = 1;i < numbers.length;i++){
            if(numbers.length > result){
                result = numbers[i];
            }
        }
        System.out.println("The max value is"+result);
    }