案例一:
public class test1 {
public static void mb_swap(String Str1,String Str2) { String temp=Str1;
Str1=Str2;
Str2=temp;}public static void main(String[] arg) { String str1="A";
String str2="B"; mb_swap(str1,str2); System.out.print(str1+" "+str2);}
}
输出str1与str2结果为“A”、“B”
案例二:
public static void mb_swap(String[] s) {
if (s.length < 2) return; String t = s[0]; s[0] = s[1]; s[1] = t;}public static void main(String[] arg) { String[] s = { "1", "2" }; mb_swap(s); System.out.print(s[0] + s[1]);}
输出结果:21