- package com.it_stringBuffer;
- /*
- * StringBuffer String
- */
- public class Demo2 {
- public static void main(String[] args) {
- String s1 = "hello";
- String s2 = "world";
- System.out.println(s1 + "---" + s2);
- changeS(s1,s2);
- System.out.println(s1 + "---" + s2);
- System.out.println("----");
-
- StringBuffer sb1 = new StringBuffer("hello");
- StringBuffer sb2 = new StringBuffer("world");
- System.out.println(sb1 + "---" + sb2);
- changeSb(sb1,sb2);
- System.out.println(sb1 + "---" + sb2);
-
- }
- private static void changeSb(StringBuffer sb1, StringBuffer sb2) {
- sb1 = sb2;
- sb2.append(sb1);
- }
- private static void changeS(String s1, String s2) {
- s1 = s2;
- s2 = s1 + s2;
- }
- }
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