1 /* 2 * Copyright (c) 1998, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* @test 25 @bug 4092350 26 @summary Verify that reads and writes of primitives are correct 27 */ 28 29 // The bug mentioned is actually a performance bug that prompted 30 // changes in the methods to write primitives 31 import java.io.*; 32 33 import java.io.*; 34 35 public class ReadWritePrimitives { 36 main(String args[])37 public static void main(String args[]) throws IOException { 38 long start, finish; 39 start = System.currentTimeMillis(); 40 testShort(); 41 finish = System.currentTimeMillis(); 42 // System.err.println("Time taken="+(finish-start)); 43 start = System.currentTimeMillis(); 44 testChar(); 45 finish = System.currentTimeMillis(); 46 // System.err.println("Time taken="+(finish-start)); 47 start = System.currentTimeMillis(); 48 testInt(); 49 finish = System.currentTimeMillis(); 50 // System.err.println("Time taken="+(finish-start)); 51 start = System.currentTimeMillis(); 52 testLong(); 53 finish = System.currentTimeMillis(); 54 // System.err.println("Time taken="+(finish-start)); 55 } 56 testShort()57 private static void testShort() throws IOException { 58 File fh = new File(System.getProperty("test.dir", "."), 59 "x.ReadWriteGenerated"); 60 RandomAccessFile f = new RandomAccessFile(fh,"rw"); 61 for(int i = 0; i < 10000; i++){ 62 f.writeShort((short)i); 63 } 64 f.writeShort((short)65535); 65 f.close(); 66 f = new RandomAccessFile(fh,"r"); 67 for(int i = 0; i < 10000; i++) { 68 short r = f.readShort(); 69 if (r != ((short)i)) { 70 System.err.println("An error occurred. Read:" + r 71 + " i:" + ((short)i)); 72 throw new IOException("Bad read from a writeShort"); 73 } 74 } 75 short rmax = f.readShort(); 76 if (rmax != ((short)65535)) { 77 System.err.println("An error occurred. Read:" + rmax); 78 throw new IOException("Bad read from a writeShort"); 79 } 80 f.close(); 81 } 82 testChar()83 private static void testChar() throws IOException { 84 File fh = new File(System.getProperty("test.dir", "."), 85 "x.ReadWriteGenerated"); 86 RandomAccessFile f = new RandomAccessFile(fh,"rw"); 87 for(int i = 0; i < 10000; i++){ 88 f.writeChar((char)i); 89 } 90 f.close(); 91 f = new RandomAccessFile(fh,"r"); 92 for(int i = 0; i < 10000; i++) { 93 char r = f.readChar(); 94 if (r != ((char)i)){ 95 System.err.println("An error occurred. Read:" + r 96 + " i:" + ((char) i)); 97 throw new IOException("Bad read from a writeChar"); 98 } 99 } 100 f.close(); 101 } 102 103 testInt()104 private static void testInt() throws IOException { 105 File fh = new File(System.getProperty("test.dir", "."), 106 "x.ReadWriteGenerated"); 107 RandomAccessFile f = new RandomAccessFile(fh,"rw"); 108 for(int i = 0; i < 10000; i++){ 109 f.writeInt((short)i); 110 } 111 f.writeInt(Integer.MAX_VALUE); 112 f.close(); 113 f = new RandomAccessFile(fh, "r"); 114 for(int i = 0; i < 10000; i++) { 115 int r = f.readInt(); 116 if (r != i){ 117 System.err.println("An error occurred. Read:" + r 118 + " i:" + i); 119 throw new IOException("Bad read from a writeInt"); 120 } 121 } 122 int rmax = f.readInt(); 123 if (rmax != Integer.MAX_VALUE){ 124 System.err.println("An error occurred. Read:" + rmax); 125 throw new IOException("Bad read from a writeInt"); 126 } 127 f.close(); 128 } 129 testLong()130 private static void testLong() throws IOException { 131 File fh = new File(System.getProperty("test.dir", "."), 132 "x.ReadWriteGenerated"); 133 RandomAccessFile f = new RandomAccessFile(fh,"rw"); 134 for(int i = 0; i < 10000; i++){ 135 f.writeLong(123456789L * (long)i); 136 } 137 f.close(); 138 f = new RandomAccessFile(fh,"r"); 139 for(int i = 0; i < 10000; i++){ 140 long r = f.readLong(); 141 if (r != (((long) i) * 123456789L) ) { 142 System.err.println("An error occurred. Read:" + r 143 + " i" + ((long) i)); 144 145 throw new IOException("Bad read from a writeInt"); 146 } 147 } 148 f.close(); 149 150 } 151 152 } 153