Here you can find the source of int2ipstr(int addr)
public static String int2ipstr(int addr)
//package com.java2s; /*// w w w . j a va2s .c om * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 int2ipstr(int addr) { int[] intAddr = new int[4]; for (int i = 3; i >= 0; i--) { intAddr[i] = addr & 0xFF; addr >>= 8; } return String.format("%d.%d.%d.%d", intAddr[0], intAddr[1], intAddr[2], intAddr[3]); } }