Java Fundamentals Hardening Case of string inversion of 46:stringbuffer class

1. Case Demo:

1  Packagecn.itcast_07;2 3 ImportJava.util.Scanner;4 5 /*6 * Reverse the string7  */8  Public classStringBufferTest3 {9      Public Static voidMain (string[] args) {Ten         //Keyboard input Data OneScanner sc =NewScanner (system.in); ASystem.out.println ("Please enter data:"); -String s =sc.nextline (); -  the         //Mode 1: concatenation with string -String S1 =Myreverse (s); -System.out.println ("S1:" +s1); -         //Mode 2: Use StringBuffer's reverse () function +String s2 =MyReverse2 (s); -System.out.println ("S2:" +S2); +     } A  at     //using StringBuffer's reverse () function -      Public Staticstring MyReverse2 (string s) { -         //stringbuffer sb = new StringBuffer (); -         //Sb.append (s); -  -         //stringbuffer sb = new StringBuffer (s); in         //sb.reverse (); -         //return sb.tostring (); to  +         //Simple Version -         return NewStringBuffer (s). Reverse (). toString (); the     } *  $     //make a concatenation with a stringPanax Notoginseng      Public Staticstring Myreverse (string s) { -String result = ""; the  +         Char[] CHS =S.tochararray (); A          for(intx = chs.length-1; x >= 0; x--) { the             //char ch = chs[x]; +             //result + = ch; -Result + =Chs[x]; $         } $  -         returnresult; -     } the}

Operation Result:

Java Fundamentals Hardening Case of string inversion of 46:stringbuffer class