Java String Case Insert invertCase(String line)

Description

invert Case

License

Open Source License

Declaration

public static String invertCase(String line) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2004 Andrei Loskutov./*w w  w.  j av a  2  s  .c  om*/
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the BSD License
 * which accompanies this distribution, and is available at
 * http://www.opensource.org/licenses/bsd-license.php
 * Contributor:  Andrei Loskutov - initial API and implementation
 *******************************************************************************/

public class Main {
    public static String invertCase(String line) {
        char[] chars = line.toCharArray();
        char c;
        boolean changed = false;
        for (int i = 0; i < chars.length; i++) {
            c = chars[i];
            // XXX DOESN'T WORK WITH UNICODE SPECIAL CHARS!!!!
            if (Character.isLowerCase(c)) {
                chars[i] = Character.toUpperCase(c);
                changed = true;
            } else if (Character.isUpperCase(c)) {
                chars[i] = Character.toLowerCase(c);
                changed = true;
            }
        }
        if (changed) {
            return String.valueOf(chars);
        }
        return line;
    }
}

Related

1. invert(final String s)
2. invert(String s)
3. invertCase(String str)
4. invertDate(String sDate)
5. inverter(String str)
6. inverter(String string)