JAVA EE: Java Tutorial : Java wrapper class (Character class methods)

Thursday, 25 February 2016

Java Tutorial : Java wrapper class (Character class methods)

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Java Tutorial : Java wrapper class (Character class methods)

WrapperClassTest.java

public class WrapperClassTest
{

    public static void main(String[] args)
    {
        /*
         * Determines whether the specified char value is a
         * letter.
         */
        boolean isLetter = Character.isLetter('a');
        System.out.println("Character.isLetter('a') = " + isLetter);

        /*
         * Determines whether the specified char value is a
         * digit.
         */
        boolean isDigit = Character.isDigit('2');
        System.out.println("Character.isDigit('2')  = " + isDigit);

        /*
         * Determines whether the specified char value is
         * white space.
         */
        boolean isWhiteSpace = Character.isWhitespace(' ');
        System.out.println("Character.isWhitespace(' ')  = "
                + isWhiteSpace);

        /*
         * Determines whether the specified char value is
         * uppercase.
         */
        boolean isUpperCase = Character.isUpperCase('A');
        System.out.println("Character.isUpperCase('A')  = "
                + isUpperCase);

        /*
         * 
         * Determines whether the specified char value is
         * lowercase.
         */
        boolean isLowerCase = Character.isLowerCase('a');
        System.out.println("Character.isLowerCase('a')  = "
                + isLowerCase);

        /*
         * Returns the uppercase form of the specified char
         * value.
         */
        System.out.println("Character.toUpperCase('m') = "
                + Character.toUpperCase('m'));

        /*
         * Returns the lowercase form of the specified char
         * value.
         */
        System.out.println("Character.toLowerCase('B') = "
                + Character.toLowerCase('B'));

        /*
         * Returns a String object representing the
         * specified character value — that is, a
         * one-character string.
         */
        String str = Character.toString('u');
        System.out.println("Character.toString('u') = " + str);

    }

}

Output

Character.isLetter('a') = true
Character.isDigit('2')  = true
Character.isWhitespace(' ')  = true
Character.isUpperCase('A')  = true
Character.isLowerCase('a')  = true
Character.toUpperCase('m') = M
Character.toLowerCase('B') = b
Character.toString('u') = u