Here you can find the source of intToPaddedString(int value, int pad)
public static String intToPaddedString(int value, int pad)
//package com.java2s; /*// w ww. j a v a 2s.com * Copyright 2017 StreamSets Inc. * * 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 { private static final String PADDING = "000000000000000000000000000000000000"; public static String intToPaddedString(int value, int pad) { StringBuilder sb = new StringBuilder(); sb.append(value); int padding = pad - sb.length(); if (padding > 0) { sb.insert(0, PADDING.subSequence(0, padding)); } return sb.toString(); } }