Java String Whitespace Collapse collapseSpaces(String argStr)

Description

Remove/collapse multiple spaces.

License

Apache License

Parameter

Parameter	Description
String	string to remove multiple spaces from.

Return

String

Declaration

public static String collapseSpaces(String argStr) 

Method Source Code

//package com.java2s;
/*/*from   w w  w.j ava2s  .c om*/
 * Copyright 2001,2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {
    /**
     * Remove/collapse multiple spaces.
     *
     * @param String string to remove multiple spaces from.
     * @return String
     */
    public static String collapseSpaces(String argStr) {
        char last = argStr.charAt(0);
        StringBuffer argBuf = new StringBuffer();

        for (int cIdx = 0; cIdx < argStr.length(); cIdx++) {
            char ch = argStr.charAt(cIdx);
            if (ch != ' ' || last != ' ') {
                argBuf.append(ch);
                last = ch;
            }
        }

        return argBuf.toString();
    }
}

Related

1. collapseSpaces(String s)
2. collapseSpaces(String text, char[] spaceCharacters)
3. collapseWhiteSpace(CharSequence value)
4. collapseWhiteSpace(final String s)