Java tutorial
//package com.java2s; /* * Copyright (C) 2014 Square, Inc. * * 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 void checkOffsetAndCount(long size, long offset, long byteCount) { if ((offset | byteCount) < 0 || offset > size || size - offset < byteCount) { throw new ArrayIndexOutOfBoundsException( String.format("size=%s offset=%s byteCount=%s", size, offset, byteCount)); } } }