Java String Leading Character addLeadingSpace(String s, int len)

Description

Adds leading spaces to the given String to the specified length.

License

Open Source License

Parameter

Parameter	Description
s	The source string.
len	The length of the target string.

Return

The String after adding leading spaces.

Declaration

public static String addLeadingSpace(String s, int len) 

Method Source Code

//package com.java2s;

public class Main {
    /**// w w  w .ja  v a  2 s .  c  om
     * Adds leading spaces to the given String to the specified length. Nothing
     * will be done if the length of the given String is equal to or greater
     * than the specified length.
     * 
     * @param s
     *            The source string.
     * @param len
     *            The length of the target string.
     * @return The String after adding leading spaces.
     */
    public static String addLeadingSpace(String s, int len) {
        return addLeadingCharacter(s, ' ', len);
    }

    /**
     * Adds specified leading characters to the specified length. Nothing will
     * be done if the length of the given String is equal to or greater than the
     * specified length.
     * 
     * @param s
     *            The source string.
     * @param c
     *            The leading character(s) to be added.
     * @param len
     *            The length of the target string.
     * @return The String after adding the specified leading character(s).
     */
    public static String addLeadingCharacter(String s, char c, int len) {
        if (s != null) {
            StringBuffer sb = new StringBuffer();
            int count = len - s.length();
            for (int i = 0; i < count; i++) {
                sb.append(c);
            }
            sb.append(s);
            return sb.toString();
        } else {
            return null;
        }
    }

    /**
     * Converts object to a string.<br>
     * If object is null then return null
     * 
     * @param obj
     * @return
     */
    public static String toString(Object obj) {
        if (null == obj) {
            return null;
        } else {
            return obj.toString();
        }
    }
}

Related

1. addLeadingSlash(String fileName)
2. addLeadingSlash(String path)
3. addLeadingSlash(String path)
4. addLeadingSlash(String string)
5. addLeadingSpace(String s, int len)
6. addLeadingUnixSlash(String fileName)
7. addLeadingZero(byte[] value)
8. addLeadingZero(final int value)
9. addLeadingZero(String aString, int aAmountOfZeros)