Here you can find the source of toByte(int n)
public static byte toByte(int n)
//package com.java2s; /**//w w w. j a v a 2s. c om * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 byte toByte(int n) { if (n > Byte.MAX_VALUE) throw new ArithmeticException(n + " = n > Byte.MAX_VALUE = " + Byte.MAX_VALUE); if (n < Byte.MIN_VALUE) throw new ArithmeticException(n + " = n < Byte.MIN_VALUE = " + Byte.MIN_VALUE); return (byte) n; } }