Java String Pad Zero zeroPadString(String string, int length)

Description

Pads the supplied String with 0's to the specified length and returns the result as a new String.

License

LGPL

Parameter

Parameter	Description
string	the original String to pad.
length	the desired length of the new padded String.

Return

a new String padded with the required number of 0's.

Declaration

public static final String zeroPadString(String string, int length) 

Method Source Code

//package com.java2s;

public class Main {
    private static final char[] zeroArray = "0000000000000000".toCharArray();

    /**//from  www  . jav a 2 s  .c  om
     * Pads the supplied String with 0's to the specified length and returns the
     * result as a new String. For example, if the initial String is "9999" and
     * the desired length is 8, the result would be "00009999". This type of
     * padding is useful for creating numerical values that need to be stored
     * and sorted as character data. Note: the current implementation of this
     * method allows for a maximum <tt>length</tt> of 16.
     * 
     * @param string
     *            the original String to pad.
     * @param length
     *            the desired length of the new padded String.
     * @return a new String padded with the required number of 0's.
     */
    public static final String zeroPadString(String string, int length) {
        StringBuffer buf = new StringBuffer(length);
        buf.append(zeroArray, 0, length - string.length()).append(string);
        return buf.toString();
    }
}

Related

1. zeroPadding(String value, int n)
2. zeroPadLeft(String s, final int len)
3. zeropadRight(String s, int len)
4. zeroPadSSN(String ssn)
5. zeroPadString(String string, int length)
6. zeroPadString(String string, int length)