public class Demo {public static void main(String[] args) {Demo1 d=new Demo1();int []arr={1,2,3,4,5};for (int i = 0; i < arr.length; i++) {System.out.print(arr[i]+" ");}System.out.println(arr);d.shuZu(arr);//发送arr并调用shuZu。System.out.println();for (int i = 0; i < arr.length; i++) {System.out.print(arr[i]+" ");}System.out.println(arr);}
}
class Demo1{public void shuZu(int[]brr){//用new数组来接受for (int i = 0; i < brr.length; i++) {if (brr[i]%2==0) {brr[i]+=2;}System.out.print(brr[i]+" ");}}}

//栈与堆 ？？？
//引用数据类型的地址值是一样的。
/1 2 3 4 5 [I@1db1fe0
1 4 3 6 5
1 4 3 6 5 [I@1db1fe0/