Java string Processing

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 Packageclass.string;ImportJava.util.Scanner;/*** String Test *@authorAdministrator **/ Public classStringtest { Public Static voidMain (string[] args) {Scanner input=NewScanner (system.in); //define two default stringsString entry = "ABCDA"; String Entry1= "1,2,3,4,1"; System.out.println ("* * * * * * * * * * * * * * * * * * *"); System.out.println (The first string defaults to: "+entry+" \ n the second string defaults to: "+entry1); System.out.println ("* * * * * * * * * * * * * * * * * * *"); intSeat = Entry.indexof ("C");//find the location of C, no seat value is negative oneSystem.out.println ("\ n" +entry+ "starting from 0 Number" C "in the first" +seat+ "bit \ n"); System.out.println (Entry+ "Total" +entry.length () + "characters");//Length () to get string lengthsString x= Entry.tolowercase ();//convert tolowercase () to lowercaseString d = entry.touppercase ();//convert toUpperCase () to uppercaseSystem.out.println ("\ n lowercase:" +x+ "\ n Uppercase:" +d); String A1= "ABCDA";//input D vs. A1 Ignore case comparison                BooleanA = entry.equalsignorecase (A1);//true Equalsignorecase () ignores case if case is ignored equal to a                if(a) System.out.println ("\ nthe password is" +entry+ "ignores case"); String Add= Entry+entry1;//Method 1String add1 = entry1.concat (entry);//Method 2System.out.println ("\ n Two string connection: Method 1" +add+ "Method 2" +add1); intappear = Entry1.indexof ("1");//find the position of the first 1 in 12341        intAPPEAR1 = Entry1.lastindexof ("1");//find the last 1 position in 12341                intAPPEAR2 = Entry.indexof (97);//b where the ASCII code is 98        intAPPEAR3 = Entry.lastindexof (97);//b where the ASCII code is 98System.out.println (\ nthe position of the first 1 in "\ +entry1+" starting from 0: "+appear+" \ T in the last 1 position "+appear1); System.out.println ("\ n starting from 0 the position of the first A in" +entry+ ":" +appear2+ "\ T in the position of the last a" +appear3); String Extract= Entry.substring (2);//ABCDA to intercept from the second position .String Extract1 = entry.substring (1, 4);//ABCDA to intercept from the second position .System.out.println ("\ n" +entry+ "starting from 0 the second digit (inclusive) begins to intercept all of the following, interception obtained:" +extract); System.out.println ("\ n" +entry+ "specifies the range intercept, starting from 0 the first digit (inclusive) to the fourth bit (not included) between the contents:" +Extract1); String out= Entry1.trim ();//Remove SpacesSystem.out.println ("\ n Go to space operation" +entry1+ "remove space after output:" +Out ); String split[]= Out.split (",");//with "," as the split flag, the split contents are stored in the split arraySystem.out.println ("\ n with", "for split flag, after split"); intj = 0;  for(inti=0; i<split.length; i++) {System.out.println ("\ n" + (i+1) + "one:" +Split[i]); J++; } System.out.println ("\ nthe" \ +j+ "characters are stored with a string array"); //StringBuffer class TestStringBuffer SB=NewStringBuffer ("\ n Hello");//Create, the initial value is Hello                intnum=112; StringBuffer SB1= Sb.append ("I'm Fine");//First time AddSystem.out.println (SB1); StringBuffer SB2= Sb1.append ("yes");//second addition, single character can be String type or char typeSystem.out.println (SB2); StringBuffer SB3= Sb2.append (num);//third time AddSystem.out.println (SB3); String b= "Helloword.java";//Create a stringSystem.out.println ("\n* * * * * * * * * * * * * * * * * * * *"); System.out.println ("A default string:" +C); System.out.println ("* * * * * * * * * * * * * * * * *"); System.out.println ("\ n Replace before:" +b); b= B.replace ("ll", "EE");//replacement method, replace "ll" with "EE"SYSTEM.OUT.PRINTLN ("After replace:" +b); System.out.println ("\ n" +b+ "does the. Jav end:" +b.endswith (". Jav"));//Determine if you think the ". Jav" End, which is obviously the end of ". Java", so the result is falseSystem.out.println (b+ "whether to start with H:" +b.startswith ("H"));//Judging whether to start with "H", where "Helloword.java" starts with "H", so the result is trueStringBuffer G=NewStringBuffer ("ABCDE");//Create a new StringBuffer string value of "AAAAA"System.out.println ("\n* * * * * * * * * * * * * * * *"); System.out.println ("A default string:" +g); System.out.println ("* * * * * * * * * * * * *"); G.setcharat (1, ' B ');//Specify replacementSystem.out.println ("\ n starts from 0 to replace the 2nd character with B:" +g); G.deletecharat (1);//Specify DeleteSystem.out.println ("\ nthe 2nd character is removed from the 0 start number:" +g); }}

Java string Processing