Character static methods for testing characters and converting case. - Java Language Basics

Java examples for Language Basics:char

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Description

Character static methods for testing characters and converting case.

Demo Code

import java.util.Scanner;

public class Main 
{
   public static void main(String[] args)
   {/*from  w  ww  .  j a  v a 2s.c  o  m*/
      Scanner scanner = new Scanner(System.in); // create scanner
      System.out.println("Enter a character and press Enter");
      String input = scanner.next(); 
      char c = input.charAt(0); // get input character

      // display character info
      System.out.printf("is defined: %b\n", Character.isDefined(c));
      System.out.printf("is digit: %b\n", Character.isDigit(c));
      System.out.printf("is first character in a Java identifier: %b\n",
         Character.isJavaIdentifierStart(c));
      System.out.printf("is part of a Java identifier: %b\n",
         Character.isJavaIdentifierPart(c));
      System.out.printf("is letter: %b\n", Character.isLetter(c));
      System.out.printf(
         "is letter or digit: %b\n", Character.isLetterOrDigit(c));
      System.out.printf(
         "is lower case: %b\n", Character.isLowerCase(c));
      System.out.printf(
         "is upper case: %b\n", Character.isUpperCase(c));
      System.out.printf(
         "to upper case: %s\n", Character.toUpperCase(c));
      System.out.printf(
         "to lower case: %s\n", Character.toLowerCase(c));
   } 
}

Result


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