Here you can find the source of ltrim(String str)
public static String ltrim(String str)
//package com.java2s; /*/* w w w .j av a 2 s.c o m*/ * M2M ServiceFOTA ONM version 1.0 * * Copyright ? 2014 kt corp. All rights reserved. * * This is a proprietary software of kt corp, and you may not use this file except in * compliance with license agreement with kt corp. Any redistribution or use of this * software, with or without modification shall be strictly prohibited without prior written * approval of kt corp, and the copyright notice above does not evidence any actual or * intended publication of such software. */ public class Main { public static String ltrim(String str) { int index = 0; while (' ' == str.charAt(index++)) ; if (index > 0) str = str.substring(index - 1); return str; } }