title: Create a playlist in iTunes with COM and Java
body: <p>How do I create a playlist in iTunes from Java, using COM (on windows i.e. no AppleScript)?</p>
  
  <p>I have found a library <a href="http://dot-totally.co.uk/software/itunescon/" rel="nofollow noreferrer">here</a> that does most of what I need, and I have added some code to ITPlaylist.java, to call the "AddTrack" method (mentioned <a href="http://developer.apple.com/sdk/" rel="nofollow noreferrer">in the docs</a>) on the iTunes object ITPlaylist :</p>
  
  <pre><code> public void addTrack(ITTrack track) {
      ITPlaylistKind k = getKind();
      if (k == ITPlaylistKindUser) {
          Dispatch.put(object, "AddTrack", track);
      } else
          throw new UnsupportedOperationException("can only add track to user playlists - kind : " + k);
  }
  </code></pre>
  
  <p>But I get an error :</p>
  
  <pre><code># A fatal error has been detected by the Java Runtime Environment:
  #
  # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x1000e150, pid=3184, tid=3896
  #
  # JRE version: 6.0_15-b03
  # Java VM: Java HotSpot(TM) Client VM (14.1-b02 mixed mode, sharing windows-x86)
  # Problematic frame:
  # C [jacob-1.14.3-x86.dll+0xe150]
  #
  # An error report file with more information is saved as:
  # Z:\\hs_err_pid3184.log
  #
  # If you would like to submit a bug report, please visit:
  # http://java.sun.com/webapps/bugreport/crash.jsp
  # The crash happened outside the Java Virtual Machine in native code.
  # See problematic frame for where to report the bug.
  </code></pre>
  
  <p>when I try and call this method.  The log file contains:</p>
  
  <pre><code>#
  # A fatal error has been detected by the Java Runtime Environment:
  #
  #  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x1000e150, pid=3040, tid=3756
  #
  # JRE version: 6.0_15-b03
  # Java VM: Java HotSpot(TM) Client VM (14.1-b02 mixed mode, sharing windows-x86 )
  # Problematic frame:
  # C  [jacob-1.14.3-x86.dll+0xe150]
  #
  # If you would like to submit a bug report, please visit:
  #   http://java.sun.com/webapps/bugreport/crash.jsp
  # The crash happened outside the Java Virtual Machine in native code.
  # See problematic frame for where to report the bug.
  #
  
  ---------------  T H R E A D  ---------------
  
  Current thread (0x01ed1400):  JavaThread "main" [_thread_in_native, id=3756, stack(0x003b0000,0x00400000)]
  
  siginfo: ExceptionCode=0xc0000005, reading address 0x00000005
  
  Registers:
  EAX=0x00000000, EBX=0x0490f6f8, ECX=0x003ffd8c, EDX=0x240b14e8
  ESP=0x003ff9d0, EBP=0x003ffa14, ESI=0x01ed1510, EDI=0x00000005
  EIP=0x1000e150, EFLAGS=0x00010246
  
  Top of Stack: (sp=0x003ff9d0)
  0x003ff9d0:   01ed1400 28404d90 28404d90 01fd9e27
  0x003ff9e0:   01ed1510 003ffa28 003ffa24 01ed1400
  0x003ff9f0:   2840bbaf 003ff9f4 00000000 003ffa28
  0x003ffa00:   28409fb8 00000000 28404d90 00000000
  0x003ffa10:   003ffa24 003ffa4c 01fd2da1 00000000
  0x003ffa20:   01fd8259 240b14e8 240b39d8 003ffa2c
  0x003ffa30:   2840401a 003ffa58 28409fb8 00000000
  0x003ffa40:   28404040 003ffa24 003ffa54 003ffa7c 
  
  Instructions: (pc=0x1000e150)
  0x1000e140:   1d 53 ff 15 20 01 01 10 66 c7 03 09 00 89 7b 08
  0x1000e150:   8b 0f 8b 51 04 57 ff d2 5f 5e 5b c2 0c 00 6a ff 
  
  
  Stack: [0x003b0000,0x00400000],  sp=0x003ff9d0,  free space=318k
  Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
  C  [jacob-1.14.3-x86.dll+0xe150]
  j  com.jacob.com.Variant.putObject(Ljava/lang/Object;)V+2
  j  com.jacob.com.VariantUtilities.populateVariant(Lcom/jacob/com/Variant;Ljava/lang/Object;Z)V+511
  j  com.jacob.com.VariantUtilities.objectToVariant(Ljava/lang/Object;)Lcom/jacob/com/Variant;+248
  j  com.jacob.com.VariantUtilities.objectsToVariants([Ljava/lang/Object;)[Lcom/jacob/com/Variant;+19
  j  com.jacob.com.Dispatch.invoke(Lcom/jacob/com/Dispatch;Ljava/lang/String;I[Ljava/lang/Object;[I)Lcom/jacob/com/Variant;+8
  j  com.jacob.com.Dispatch.put(Lcom/jacob/com/Dispatch;Ljava/lang/String;Ljava/lang/Object;)V+18
  j  com.dt.iTunesController.ITPlaylist.addTrack(Lcom/dt/iTunesController/ITTrack;)V+19
  j  uk.co.teamnomad.itunes.WindowsLibraryImpl.savePlaylist(Ljava/util/List;Luk/co/teamnomad/itunes/PlayList;)V+46
  j  uk.co.teamnomad.bpm.main.Main.&lt;init&gt;(Luk/co/teamnomad/bpm/system/OperatingSystem;)V+309
  j  uk.co.teamnomad.bpm.main.Main.getInstance()Luk/co/teamnomad/bpm/main/Main;+16
  j  uk.co.teamnomad.bpm.main.Main.main([Ljava/lang/String;)V+8
  v  ~StubRoutines::call_stub
  V  [jvm.dll+0xecfac]
  V  [jvm.dll+0x1741d1]
  V  [jvm.dll+0xed02d]
  V  [jvm.dll+0xf5bf5]
  V  [jvm.dll+0xfd84d]
  C  [java.exe+0x2155]
  C  [java.exe+0x82ce]
  C  [kernel32.dll+0x44911]
  C  [ntdll.dll+0x3e4b6]
  C  [ntdll.dll+0x3e489]
  
  Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
  j  com.jacob.com.Variant.putVariantDispatch(Ljava/lang/Object;)V+0
  j  com.jacob.com.Variant.putObject(Ljava/lang/Object;)V+2
  j  com.jacob.com.VariantUtilities.populateVariant(Lcom/jacob/com/Variant;Ljava/lang/Object;Z)V+511
  j  com.jacob.com.VariantUtilities.objectToVariant(Ljava/lang/Object;)Lcom/jacob/com/Variant;+248
  j  com.jacob.com.VariantUtilities.objectsToVariants([Ljava/lang/Object;)[Lcom/jacob/com/Variant;+19
  j  com.jacob.com.Dispatch.invoke(Lcom/jacob/com/Dispatch;Ljava/lang/String;I[Ljava/lang/Object;[I)Lcom/jacob/com/Variant;+8
  j  com.jacob.com.Dispatch.put(Lcom/jacob/com/Dispatch;Ljava/lang/String;Ljava/lang/Object;)V+18
  j  com.dt.iTunesController.ITPlaylist.addTrack(Lcom/dt/iTunesController/ITTrack;)V+19
  j  uk.co.teamnomad.itunes.WindowsLibraryImpl.savePlaylist(Ljava/util/List;Luk/co/teamnomad/itunes/PlayList;)V+46
  j  uk.co.teamnomad.bpm.main.Main.&lt;init&gt;(Luk/co/teamnomad/bpm/system/OperatingSystem;)V+309
  j  uk.co.teamnomad.bpm.main.Main.getInstance()Luk/co/teamnomad/bpm/main/Main;+16
  j  uk.co.teamnomad.bpm.main.Main.main([Ljava/lang/String;)V+8
  v  ~StubRoutines::call_stub
  
  ---------------  P R O C E S S  ---------------
  
  Java Threads: ( =&gt; current thread )
    0x043a4800 JavaThread "MerapiBridgeSocket" [_thread_in_native, id=3664, stack(0x04800000,0x04850000)]
    0x01f4c800 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=2440, stack(0x04160000,0x041b0000)]
    0x01f47c00 JavaThread "CompilerThread0" daemon [_thread_blocked, id=3628, stack(0x04110000,0x04160000)]
    0x01f47400 JavaThread "Attach Listener" daemon [_thread_blocked, id=3584, stack(0x040c0000,0x04110000)]
    0x01f3ac00 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=2968, stack(0x04070000,0x040c0000)]
    0x01ef8c00 JavaThread "Finalizer" daemon [_thread_blocked, id=3724, stack(0x04020000,0x04070000)]
    0x01ef7800 JavaThread "Reference Handler" daemon [_thread_blocked, id=3324, stack(0x03fd0000,0x04020000)]
  =&gt;0x01ed1400 JavaThread "main" [_thread_in_native, id=3756, stack(0x003b0000,0x00400000)]
  
  Other Threads:
    0x01ef6000 VMThread [stack: 0x01180000,0x011d0000] [id=2836]
    0x01f5f000 WatcherThread [stack: 0x041b0000,0x04200000] [id=3528]
  
  VM state:not at safepoint (normal execution)
  
  VM Mutex/Monitor currently owned by a thread: None
  
  Heap
   def new generation   total 960K, used 794K [0x24000000, 0x24100000, 0x244e0000)
    eden space 896K,  81% used [0x24000000, 0x240b7510, 0x240e0000)
    from space 64K,  95% used [0x240f0000, 0x240ff450, 0x24100000)
    to   space 64K,   0% used [0x240e0000, 0x240e0000, 0x240f0000)
   tenured generation   total 4096K, used 876K [0x244e0000, 0x248e0000, 0x28000000)
     the space 4096K,  21% used [0x244e0000, 0x245bb318, 0x245bb400, 0x248e0000)
   compacting perm gen  total 12288K, used 4255K [0x28000000, 0x28c00000, 0x2c000000)
     the space 12288K,  34% used [0x28000000, 0x28427cb8, 0x28427e00, 0x28c00000)
      ro space 8192K,  63% used [0x2c000000, 0x2c519920, 0x2c519a00, 0x2c800000)
      rw space 12288K,  53% used [0x2c800000, 0x2ce74dd0, 0x2ce74e00, 0x2d400000)
  
  Dynamic libraries:
  0x00400000 - 0x00424000     C:\Windows\system32\java.exe
  0x771a0000 - 0x772c7000     C:\Windows\system32\ntdll.dll
  0x75a20000 - 0x75afb000     C:\Windows\system32\kernel32.dll
  0x75ee0000 - 0x75fa6000     C:\Windows\system32\ADVAPI32.dll
  0x772e0000 - 0x773a3000     C:\Windows\system32\RPCRT4.dll
  0x7c340000 - 0x7c396000     C:\Program Files\Java\jre6\bin\msvcr71.dll
  0x6d800000 - 0x6da8b000     C:\Program Files\Java\jre6\bin\client\jvm.dll
  0x77060000 - 0x770fd000     C:\Windows\system32\USER32.dll
  0x773b0000 - 0x773fb000     C:\Windows\system32\GDI32.dll
  0x744f0000 - 0x74522000     C:\Windows\system32\WINMM.dll
  0x76f30000 - 0x76fda000     C:\Windows\system32\msvcrt.dll
  0x76d20000 - 0x76e64000     C:\Windows\system32\ole32.dll
  0x75d20000 - 0x75dad000     C:\Windows\system32\OLEAUT32.dll
  0x744b0000 - 0x744e9000     C:\Windows\system32\OLEACC.dll
  0x77100000 - 0x7711e000     C:\Windows\system32\IMM32.DLL
  0x76c00000 - 0x76cc8000     C:\Windows\system32\MSCTF.dll
  0x75820000 - 0x7584c000     C:\Windows\system32\apphelp.dll
  0x772d0000 - 0x772d9000     C:\Windows\system32\LPK.DLL
  0x77120000 - 0x7719d000     C:\Windows\system32\USP10.dll
  0x6d7b0000 - 0x6d7bc000     C:\Program Files\Java\jre6\bin\verify.dll
  0x6d330000 - 0x6d34f000     C:\Program Files\Java\jre6\bin\java.dll
  0x6d290000 - 0x6d298000     C:\Program Files\Java\jre6\bin\hpi.dll
  0x75a10000 - 0x75a17000     C:\Windows\system32\PSAPI.DLL
  0x6d7f0000 - 0x6d7ff000     C:\Program Files\Java\jre6\bin\zip.dll
  0x6d610000 - 0x6d623000     C:\Program Files\Java\jre6\bin\net.dll
  0x76e70000 - 0x76e9d000     C:\Windows\system32\WS2_32.dll
  0x75fb0000 - 0x75fb6000     C:\Windows\system32\NSI.dll
  0x75030000 - 0x7506b000     C:\Windows\system32\mswsock.dll
  0x75090000 - 0x75095000     C:\Windows\System32\wship6.dll
  0x74cf0000 - 0x74cf5000     C:\Windows\System32\wshtcpip.dll
  0x10000000 - 0x10019000     C:\Windows\System32\jacob-1.14.3-x86.dll
  0x72640000 - 0x726db000     C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.1434_none_d08b6002442c891f\MSVCR80.dll
  0x76ea0000 - 0x76f24000     C:\Windows\system32\CLBCatQ.DLL
  0x74db0000 - 0x74deb000     C:\Windows\system32\rsaenh.dll
  
  VM Arguments:
  java_command: bpm-0.0.13-jar-with-dependencies.jar
  Launcher Type: SUN_STANDARD
  
  Environment Variables:
  CLASSPATH=.;C:\Program Files\QuickTime\QTSystem\QTJava.zip
  PATH=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files\QuickTime\QTSystem\
  USERNAME=ed
  OS=Windows_NT
  PROCESSOR_IDENTIFIER=x86 Family 6 Model 23 Stepping 6, GenuineIntel
  
  
  
  ---------------  S Y S T E M  ---------------
  
  OS: Windows Vista Build 6001 Service Pack 1
  
  CPU:total 1 (2 cores per cpu, 1 threads per core) family 6 model 23 stepping 6, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1
  
  Memory: 4k page, physical 2097151k(1656488k free), swap 4194303k(4092420k free)
  
  vm_info: Java HotSpot(TM) Client VM (14.1-b02) for windows-x86 JRE (1.6.0_15-b03), built on Jul 25 2009 01:22:46 by "java_re" with MS VC++ 7.1
  
  time: Mon Aug 31 20:14:48 2009
  elapsed time: 7 seconds
  </code></pre>
  
  <p>What am I doing wrong ?</p>