A locale independent version of toUpperCase. - Java java.lang

Java examples for java.lang:String Case

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Description

A locale independent version of toUpperCase.

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) {
        String string = "java2s.com";
        System.out.println(toUpperCase(string));
    }//from  w w w  .  j  a  v  a  2  s .c om

    /**
     * A locale independent version of toUpperCase.
     *
     * @param string input to be converted
     * @return a US Ascii uppercase version
     */
    public static String toUpperCase(String string) {
        boolean changed = false;
        char[] chars = string.toCharArray();

        for (int i = 0; i != chars.length; i++) {
            char ch = chars[i];
            if ('a' <= ch && 'z' >= ch) {
                changed = true;
                chars[i] = (char) (ch - 'a' + 'A');
            }
        }

        if (changed) {
            return new String(chars);
        }

        return string;
    }
}

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