publicclassfun_1{//定义数组类型的函数staticint[]swap(int a,int b){int t =a;
a =b;
b =t;//返回数组类型returnnewint[]{a,b};}publicstaticvoidmain(String[] args){int a =3;int b =4;//初始化swap数组int[] swap =swap(a, b);//输出数组的前两位元素
System.out.println(swap[0]+" "+swap[1]);}}