Java String Pad Left leftAlignedPaddedString(String input, int length)

Description

Utility to return a left-aligned version of a string padded to the number of characters specified.

License

Open Source License

Parameter

Parameter	Description
input	The input string
length	The length desired

Return

The updated string

Declaration

public static String leftAlignedPaddedString(String input, int length) 

Method Source Code

//package com.java2s;
/**********************************************************************
Copyright (c) 2003 Andy Jefferson and others. All rights reserved. 
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/*  w w w  .j  a  va  2  s .co  m*/
    
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.
     
    
Contributors:
2003 Erik Bengtson - moved replaceAll from Column class to here
2004 Andy Jefferson - moved intArrayToString, booleanArrayToString from SM
2007 Xuan Baldauf - toJVMIDString hex fix
...
**********************************************************************/

public class Main {
    /** Utility to return a left-aligned version of a string padded to the
     * number of characters specified.
     * @param input The input string
     * @param length The length desired
     * @return The updated string 
     **/
    public static String leftAlignedPaddedString(String input, int length) {
        if (length <= 0) {
            return null;
        }

        StringBuilder output = new StringBuilder();
        char space = ' ';

        if (input != null) {
            if (input.length() < length) {
                output.append(input);
                for (int i = input.length(); i < length; i++) {
                    output.append(space);
                }
            } else {
                output.append(input.substring(0, length));
            }
        } else {
            for (int i = 0; i < length; i++) {
                output.append(space);
            }
        }

        return output.toString();
    }
}

Related

1. leftPad(byte[] data, int size, byte pad)
2. leftPad(final String input, final int size)
3. leftPad(final String numStr, final int numDigits)
4. leftPad(final String str, final int size, String padStr)