String StringBuffer Arrays Strings modified stitching

 PackageBaozhuang;Importjava.util.Arrays;ImportJava.util.Scanner; Public classexe { Public Static voidMain (string[] args) {String s= "27o51i51022i8"; S= S.replace (' O ', ' 0 '); S= S.replace (' I ', ' 1 ');                System.out.println (s); String S0= "My_english_name"; String[] S1= S0.split ("_"); s1[0] = s1[0].tolowercase (); s1[1] = s1[1].touppercase (); s1[2] = s1[2].touppercase (); //String concatenationString S2 =s1[0]+ s1[1]+s1[2]; String S3= S1[0].concat (S1[1]). Concat (s1[2]);        System.out.println (S3);        SYSTEM.OUT.PRINTLN (S2);        System.out.println (arrays.tostring (S1)); //StringBuffer StitchingStringBuffer S4 =NewStringBuffer (s1[0]); S4= S4.append (S1[1]). Append (s1[2]);                System.out.println (S4); Scanner input=NewScanner (system.in);        String Word; StringBuffer S5=NewStringBuffer ();  Do{System.out.println ("Please enter the English word:"); Word=Input.nextline (); if(Word.equals ("End")){                 Break; } S5= S5.append (word+ ","); } while(true);        System.out.println (S5); String S6=s5.tostring (); String [] S7= S6.split (","); /*for (int i = 0; i < s7.length; i++) {System.out.println (s7[i]); }*/        //For each loop         for(String s8:s7) {System.out.println (S8);    } input.close (); }}

String StringBuffer Arrays Strings modified stitching