Java Utililty Methods String Chomp

if (isEmpty(str)) {
    return str;
if (str.length() == 1) {
    char ch = str.charAt(0);
    if ((ch == '\r') || (ch == '\n')) {
        return "";
    return str;
int lastIdx = str.length() - 1;
char last = str.charAt(lastIdx);
if (last == '\n') {
    if (str.charAt(lastIdx - 1) == '\r') {
        lastIdx--;
} else if (last != '\r') {
    lastIdx++;
return str.substring(0, lastIdx);

if (str == null || str.length() == 0) {
    return str;
int firstIdx = 0;
int lastIdx = str.length() - 1;
char c = str.charAt(lastIdx);
while (c == '\n' || c == '\r' || c == '\t' || c == ' ') {
    if (lastIdx == 0) {
...

return chomp(str, "\n");

if (str.endsWith("\n")) {
    return str.substring(0, str.length() - 1);
} else {
    return str;

Remove the last value of a supplied String, and everything after it from a String.

int idx = str.lastIndexOf(sep);
if (idx != -1) {
    return str.substring(0, idx);
} else {
    return str;

Removes separator from the end of str if it's there, otherwise leave it alone.

NOTE: This method changed in version 2.0.

if (isEmpty(str) || separator == null) {
    return str;
if (str.endsWith(separator)) {
    return str.substring(0, str.length() - separator.length());
return str;

if (value.length() > 0) {
    return value.substring(0, value.length() - 1);
return value;

chopIfMatch(sb, '\n');
chopIfMatch(sb, '\r');

Remove the end of line and tab characters from a String.

StringBuffer buffer = new StringBuffer();
for (int i = 0; i < str.length(); i++) {
    if (str.charAt(i) != '\n' && str.charAt(i) != '\r' && str.charAt(i) != '\t')
        buffer.append(str.charAt(i));
str = buffer.toString();
buffer = null;
return str;
...

if (!expr.endsWith("{")) {
    return expr;
int closurePos = expr.lastIndexOf("->");
if (closurePos < 0) {
    return expr;
return expr.substring(0, closurePos).trim();
...