1 /* 2 * Copyright (c) 2004, 2016, 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 import java.io.ByteArrayInputStream; 25 import java.io.ByteArrayOutputStream; 26 import java.io.InputStream; 27 28 import javax.sound.midi.MidiEvent; 29 import javax.sound.midi.MidiSystem; 30 import javax.sound.midi.Sequence; 31 import javax.sound.midi.ShortMessage; 32 import javax.sound.midi.Track; 33 34 /** 35 * @test 36 * @bug 5048381 37 * @summary NPE when writing a sequence with a realtime MIDI message 38 */ 39 public class WriteRealTimeMessageNPE { 40 41 public static void main(String args[]) throws Exception { 42 System.out.println("5048381: NullPointerException when saving a MIDI sequence"); 43 boolean npeThrown = false; 44 boolean noEx = false; 45 46 Sequence seq = new Sequence(Sequence.PPQ, 384, 1); 47 Track t = seq.getTracks()[0]; 48 ShortMessage msg = new ShortMessage(); 49 msg.setMessage(0xF8, 0, 0); 50 t.add(new MidiEvent(msg, 0)); 51 52 ByteArrayOutputStream out = new ByteArrayOutputStream(); 53 try { 54 MidiSystem.write(seq, 0, out); 55 noEx = true; 56 } catch (NullPointerException npe) { 57 npeThrown = true; 58 System.out.println("## Failed: Threw unexpected NPE: "+npe); 59 throw new Exception("Test FAILED!"); 60 } catch (Exception e) { 61 System.out.println("Threw unexpected Exception: "+e); 62 System.out.println("But at least did not throw NPE..."); 63 } 64 if (noEx) { 65 InputStream is = new ByteArrayInputStream(out.toByteArray()); 66 seq = MidiSystem.getSequence(is); 67 System.out.println("Sequence has "+seq.getTracks().length+" tracks."); 68 if (seq.getTracks().length > 0) { 69 System.out.println("Track 0 has "+seq.getTracks()[0].size()+" events."); 70 } 71 } 72 System.out.println("Test passed."); 73 } 74 }