Here you can find the source of leftPad(String str, int size, char padChar)
public static String leftPad(String str, int size, char padChar)
//package com.java2s; /*// w w w .ja v a 2 s .c o m * Copyright 2010-2015 Eduardo Nogueira Fragu?o. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class Main { public static String leftPad(String str, int size, char padChar) { String _return = str; while (_return.length() < size) { _return = padChar + _return; } return _return; } }