Java tutorial
//package com.java2s; /* * Copyright (c) 2016 Qiscus. * * 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.IOException; import java.io.InputStream; import java.io.OutputStream; public class Main { private static final int EOF = -1; private static final int DEFAULT_BUFFER_SIZE = 1024 * 4; private static int copy(InputStream input, OutputStream output) throws IOException { long count = copyLarge(input, output); if (count > Integer.MAX_VALUE) { return -1; } return (int) count; } private static long copyLarge(InputStream input, OutputStream output) throws IOException { return copyLarge(input, output, new byte[DEFAULT_BUFFER_SIZE]); } private static long copyLarge(InputStream input, OutputStream output, byte[] buffer) throws IOException { long count = 0; int n; while (EOF != (n = input.read(buffer))) { output.write(buffer, 0, n); count += n; } return count; } }