Java String Whitespace Collapse collapseWhiteSpaces(String str)

Description

Collapses consecutive white spaces into one space.

License

Open Source License

Declaration

public static String collapseWhiteSpaces(String str) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2007, 2009 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0, which accompanies this distribution
 * and is available at http://www.eclipse.org/legal/epl-v10.html.
 * //  ww  w.j  ava  2  s  .  co m
 * Contributors:
 *     Oracle - initial API and implementation
 ******************************************************************************/

public class Main {
    /**
     * Collapses consecutive white spaces into one space.
     */
    public static String collapseWhiteSpaces(String str) {
        String result = null;
        if (str != null) {
            StringBuffer buffer = new StringBuffer();
            boolean isInWhiteSpace = false;
            for (int i = 0; i < str.length(); i++) {
                char c = str.charAt(i);
                if (Character.isWhitespace(c)) {
                    isInWhiteSpace = true;
                } else {
                    if (isInWhiteSpace)
                        buffer.append(" ");
                    isInWhiteSpace = false;
                    buffer.append(c);
                }
            }
            result = buffer.toString();
        }
        return result;
    }
}

Related

1. collapseWhitespace(String string)
2. collapseWhiteSpace(String string)
3. collapseWhiteSpace(String text)
4. collapseWhitespace(String text)
5. collapseWhiteSpace(StringBuffer oriText)