Right-pad a String with a configurable padding character. - Java java.lang

Java examples for java.lang:String Pad

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Description

Right-pad a String with a configurable padding character.

Demo Code

/*/*from   ww w  .ja  v a 2  s.  c o m*/
 * Copyright 2009-2013 the original author or authors.
 *
 * 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.
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        String string = "java2s.com";
        int size = 2;
        System.out.println(padRight(string, size));
    }

    /**
     * Right-pad a String with a configurable padding character.
     *
     * @param string      The String to pad
     * @param size        Pad String by the number of characters.
     * @param paddingChar The character to pad the String with.
     * @return The padded String. If the provided String is null, an empty String is returned.
     */
    public static String padRight(String string, int size, char paddingChar) {

        if (string == null) {
            return "";
        }

        StringBuilder padded = new StringBuilder(string);
        while (padded.length() < size) {
            padded.append(paddingChar);
        }
        return padded.toString();
    }

    /**
     * Right-pad the provided String with empty spaces.
     *
     * @param string The String to pad
     * @param size   Pad String by the number of characters.
     * @return The padded String. If the provided String is null, an empty String is returned.
     */
    public static String padRight(String string, int size) {
        return padRight(string, size, ' ');
    }
}

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