Data conversion of small Java experiments

See someone ask the program, went to write a few lines of code, by the way review the conditional statement and ASCII code

1 ImportJava.util.Scanner;2  Public classTest1 {3 4      Public Static voidMain (string[] args)5     {6Scanner sc =NewScanner (system.in);7System.out.print ("Enter an ASCII value:");8         intASCII =sc.nextint ();9 sc.close ();Ten         CharCH = (Char) ASCII; One         //Turn ' a ' ~ ' z ' to ' a ' ~ ' Z ' A         if(Ch >= ' a ' && ch <= ' Z ') -         { -System.out.println ((Char) (ch-32)); the         } -         //Turn ' a ' ~ ' z ' to ' a ' ~ ' Z ' -         Else if(Ch >= ' A ' && ch <= ' Z ') -         { +System.out.println ((Char) (ch+32)); -         } +         //output 0~9 in ' 0 ' ~ ' 9 ' A         Else if(Ch >= ' 0 ' && ch <= ' 9 ') at         { - System.out.println (CH); -         } -         //Output "+-*/" -         Else if(ch = = ' + ' | | ch== '-' | | ch = = ' * ' | | ch = = '/')) -         { inSystem.out.println ("belongs to arithmetic operator"); -         } to         //output "illegal characters" +         Else -         { theSYSTEM.OUT.PRINTLN ("illegal character"); *         } $     }Panax Notoginseng}

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Data conversion of small Java experiments