Here you can find the source of long2IP(long proper_address)
public static String long2IP(long proper_address)
//package com.java2s; /*//from w w w . j ava2s . co m * Copyright (C) 2014 Adam Huang * * 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 long2IP(long proper_address) { StringBuilder builder = new StringBuilder(); if (proper_address >= 0) { builder.append((int) (Math.floor(proper_address / Math.pow(256, 3)))); builder.append("."); builder.append((int) (Math.floor((proper_address % Math.pow(256, 3)) / Math.pow(256, 2)))); builder.append("."); builder.append((int) (Math .floor(((proper_address % Math.pow(256, 3)) % Math.pow(256, 2)) / Math.pow(256, 1)))); builder.append("."); builder.append( (int) (Math.floor((((proper_address % Math.pow(256, 3)) % Math.pow(256, 2)) % Math.pow(256, 1)) / Math.pow(256, 0)))); } return builder.toString(); } }