JAVA可变参数

今天遇到了一个要用可变参数的例子，又把以前的例子拿来看了一下！贴到网上吧。

package test;

public class TestVarargs {
	private static int sum(int... nums) {

		int sum = 0;
		for (int num : nums) {
			sum += num;
		}
		return sum;
	}

	public static void main(String[] args) {
		int sum = 0;
		sum = sum(1, 2, 3, 4, 5, 6);
		System.out.println(sum);
	}

}

 

但可变参数只能是最后一个参数

package test;

public class TestVarargs {
	private static int sum(String a, int... nums) {
		System.out.println(a);

		int sum = 0;
		for (int num : nums) {
			sum += num;
		}
		return sum;
	}

	public static void main(String[] args) {
		int sum = 0;
		sum = sum("hello", 1, 2, 3, 4, 5, 6);
		System.out.println(sum);
	}

}