Java String Whitespace Normalize normalizeWhitespaces(String s)

Description

Replaces all duplicated whitespace characters with single space.

License

Open Source License

Declaration

public static String normalizeWhitespaces(String s) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2011 Google, Inc./*  ww w.j  a v a2  s .c  o m*/
 * 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
 *
 * Contributors:
 *    Google, Inc. - initial API and implementation
 *******************************************************************************/

public class Main {
    /**
     * Replaces all duplicated whitespace characters with single space.
     */
    public static String normalizeWhitespaces(String s) {
        int length = s.length();
        StringBuffer normalized = new StringBuffer(length);
        //
        boolean needSpace = false;
        for (int index = 0; index < length; index++) {
            char c = s.charAt(index);
            if (Character.isWhitespace(c)) {
                needSpace = true;
            } else {
                if (needSpace) {
                    needSpace = false;
                    normalized.append(' ');
                }
                normalized.append(c);
            }
        }
        // add trailing space
        if (needSpace) {
            normalized.append(' ');
        }
        //
        return normalized.toString();
    }
}

Related

1. normalizeWhitespace(String orig)
2. normalizeWhitespace(String s)
3. normalizeWhitespace(String source)
4. normalizeWhiteSpace(String src)
5. normalizeWhitespace(String text)
6. normalizeWhitespaces(String text)