断点调试demo

//断点调试，记住：方法中的变量在调用完之后会消失

package cn.debug;

public class DuanDian {
    public static void main(String[] args) {
        int a = 10;
        int b = 20;
        System.out.println(a + "-----" + b);
        change(a, b);
        System.out.println(a + "-----" + b);
        int[] arr = { 1, 2, 3, 4, 5 };
        change(arr);
        System.out.println(arr[1]);

    }

    public static void change(int a, int b) {
        a = b;
        b = a + b;
        System.out.println(a + "-----" + b);
    }

    public static void change(int[] arr) {
          for (int i = 0; i < arr.length; i++) {
            if (arr[i] % 2 == 0) {

                arr[i] = arr[i] * 2;

            }

        }
    }
}