Java Utililty Methods String Pad Right

if (bytes == null) {
    return null;
} else if (bytes.length >= length) {
    return bytes;
byte[] newBytes = new byte[length];
System.arraycopy(bytes, 0, newBytes, 0, bytes.length);
for (int i = bytes.length; i < length; i++) {
...

int pads = size - input.length();
if (pads <= 0)
    return input;
StringBuilder out = new StringBuilder(input);
for (int i = pads; i > 0; i--)
    out.append(' ');
return out.toString();

Right pad a String with a specified character.

The String is padded to the size of size .

 StringUtils.rightPad(null, *, *)     = null StringUtils.rightPad("", 3, 'z')     = "zzz" StringUtils.rightPad("bat", 3, 'z')  = "bat" StringUtils.rightPad("bat", 5, 'z')  = "batzz" StringUtils.rightPad("bat", 1, 'z')  = "bat" StringUtils.rightPad("bat", -1, 'z') = "bat" 

if (str == null) {
    return null;
final int pads = size - str.length();
if (pads <= 0) {
    return str; 
if (pads > PAD_LIMIT) {
...

if (_str == null) {
    return null;
int pads = _size - _str.length();
if (pads <= 0) {
    return _str; 
return _str.concat(padding(pads, _padChar));
...

String csOut = new String();
int nLgStringIn = csIn.length();
int nNbcharToPad = nRequiredLength - nLgStringIn;
if (nNbcharToPad > 0) {
    csOut = csIn;
    for (int n = 0; n < nNbcharToPad; n++) {
        csOut = csOut + cFill;
} else 
    csOut = csIn.substring(0, nRequiredLength);
return csOut;

String answer;
if (field.length() < width) {
    answer = field + fill(padding, width - field.length());
} else {
    answer = field;
return answer;

String out = "";
int toPad = length - in.length();
if (toPad < 0) {
    throw new IllegalArgumentException("Input string longer than requested length");
out = in + getStringRepetition(padding + "", toPad);
return out;

for (int i = 0; i < len; i++) {
    in += pad;
return in;

if (nullOrEmpty(input))
    input = "";
if (input.length() >= length)
    return input;
String padString = createPad(padding, length - input.length());
return input.concat(padString);

if (input.length() < length) {
    StringBuilder sb = new StringBuilder();
    sb.append(input);
    for (int i = 0, len = length - input.length(); i < len; i++) {
        sb.append(pad);
    return sb.toString();
return input;