Here you can find the source of close(DataOutputStream out)
public static void close(DataOutputStream out)
//package com.java2s; /*// ww w .j av a2 s. c om * Copyright 2000-2014 JetBrains s.r.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. */ import java.io.*; public class Main { public static void close(DataOutputStream out) { if (out != null) { try { out.close(); } catch (IOException ignored) { } } } }