1 /* 2 * Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 */ 23 24 /* 25 * @test 26 * @bug 4242173 5017980 6576055 27 * @summary Test Byte.decode method 28 * @author madbot 29 * @author Joseph D. Darcy 30 */ 31 32 /** 33 * There are six methods in java.lang.Byte which transform strings 34 * into a byte or Byte value: 35 * 36 * public Byte(String s) 37 * public static Byte decode(String nm) 38 * public static byte parseByte(String s, int radix) 39 * public static byte parseByte(String s) 40 * public static Byte valueOf(String s, int radix) 41 * public static Byte valueOf(String s) 42 * 43 * However, of these only decode has a nontrivial implementation 44 * in that class. 45 */ 46 public class Decode { 47 48 private static void check(String val, byte expected) { 49 byte n = (Byte.decode(val)).byteValue(); 50 if (n != expected) 51 throw new RuntimeException("Byte.decode failed. String:" + 52 val + " Result:" + n); 53 } 54 55 private static void checkFailure(String val, String message) { 56 try { 57 byte n = (Byte.decode(val)).byteValue(); 58 throw new RuntimeException(message); 59 } catch (NumberFormatException e) { /* Okay */} 60 } 61 62 public static void main(String[] args) throws Exception { 63 check(new String(""+Byte.MIN_VALUE), Byte.MIN_VALUE); 64 check(new String(""+Byte.MAX_VALUE), Byte.MAX_VALUE); 65 66 check("10", (byte)10); 67 check("0x10", (byte)16); 68 check("0X10", (byte)16); 69 check("010", (byte)8); 70 check("#10", (byte)16); 71 72 check("+10", (byte)10); 73 check("+0x10", (byte)16); 74 check("+0X10", (byte)16); 75 check("+010", (byte)8); 76 check("+#10", (byte)16); 77 78 check("-10", (byte)-10); 79 check("-0x10", (byte)-16); 80 check("-0X10", (byte)-16); 81 check("-010", (byte)-8); 82 check("-#10", (byte)-16); 83 84 check(Integer.toString((int)Byte.MIN_VALUE), Byte.MIN_VALUE); 85 check(Integer.toString((int)Byte.MAX_VALUE), Byte.MAX_VALUE); 86 87 checkFailure("0x-10", "Byte.decode allows negative sign in wrong position."); 88 checkFailure("0x+10", "Byte.decode allows positive sign in wrong position."); 89 90 checkFailure("+", "Raw plus sign allowed."); 91 checkFailure("-", "Raw minus sign allowed."); 92 93 checkFailure(Integer.toString((int)Byte.MIN_VALUE - 1), "Out of range"); 94 checkFailure(Integer.toString((int)Byte.MAX_VALUE + 1), "Out of range"); 95 96 checkFailure("", "Empty String"); 97 } 98 }