Here you can find the source of toBinaryIeee754String(long decimal)
static String toBinaryIeee754String(long decimal)
//package com.java2s; /*// ww w . jav a2 s . c o m * Copyright 2010 Google Inc. * Copyright 2010 Daniel Bell * * 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 { static String toBinaryIeee754String(long decimal) { String binary = Long.toBinaryString(decimal); StringBuilder result = new StringBuilder(binary); for (long i = binary.length(); i < 32; i++) { result.insert(0, "0"); } result.insert(9, " "); result.insert(1, " "); return result.toString(); } }