系统报错，如下，请问是什么错误，如何修改？
#
# An unexpected error has been detected by Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d7c1115, pid=1684, tid=3912
#
# Java VM: Java HotSpot(TM) Client VM (1.6.0-b105 mixed mode)
# Problematic frame:
# C  [jvm.dll+0x1115]
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#

---------------  T H R E A D  ---------------

Current thread (0x029ff800):  JavaThread "Unknown thread" [_thread_in_native, id=3912]

siginfo: ExceptionCode=0xc0000005, writing address 0x00000124

Registers:
EAX=0x00000000, EBX=0x029ff8e8, ECX=0x029ff7f4, EDX=0x00000004
ESP=0x0b64e994, EBP=0x0b64e9c8, ESI=0x00000000, EDI=0x00000000
EIP=0x6d7c1115, EFLAGS=0x00010246

Top of Stack: (sp=0x0b64e994)
0x0b64e994:   029ff8e8 6d8b3d31 00000000 00000006
0x0b64e9a4:   02f15808 029ff8e8 00000000 786a1463
0x0b64e9b4:   029ff8e8 02f15808 029ff800 345e42f8
0x0b64e9c4:   345e42f8 0b64ea04 0b6fa460 029ff8e8
0x0b64e9d4:   0b64ea0c 0b64ea14 00000007 78e6a575
0x0b64e9e4:   0b64e9e4 345e42f8 0b64ea14 34650630
0x0b64e9f4:   00000000 345e42f8 00000000 0b64ea14
0x0b64ea04:   0b64ea38 0b6f2dd7 345e73b8 0b6f8436 

Instructions: (pc=0x6d7c1115)
0x6d7c1105:   96 24 01 00 00 5e c3 cc cc cc cc 56 8b 74 24 08
0x6d7c1115:   c7 86 24 01 00 00 05 00 00 00 83 3d 30 19 9e 6d 


Stack: [0x0ae50000,0x0b650000),  sp=0x0b64e994,  free space=8186k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C  [jvm.dll+0x1115]
j  java.lang.Class.getPrimitiveClass(Ljava/lang/String;)Ljava/lang/Class;+0
j  java.lang.Float.<clinit>()V+2
v  ~StubRoutines::call_stub

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j  java.lang.Class.getPrimitiveClass(Ljava/lang/String;)Ljava/lang/Class;+0
j  java.lang.Float.<clinit>()V+2
v  ~StubRoutines::call_stub
j  java.util.HashMap.<init>(IF)V+56
j  java.util.HashMap.<init>(I)V+4
j  sun.misc.SoftCache.<init>(I)V+26
j  java.lang.Thread.<clinit>()V+28
v  ~StubRoutines::call_stub

---------------  P R O C E S S  ---------------

Java Threads: ( => current thread )
=>0x029ff800 JavaThread "Unknown thread" [_thread_in_native, id=3912]

Other Threads:
  0x02d67c00 VMThread [id=992]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
 def new generation   total 14784K, used 263K [0x2c5d0000, 0x2d5d0000, 0x2e5d0000)
  eden space 13184K,   2% used [0x2c5d0000, 0x2c611ec8, 0x2d2b0000)
  from space 1600K,   0% used [0x2d2b0000, 0x2d2b0000, 0x2d440000)
  to   space 1600K,   0% used [0x2d440000, 0x2d440000, 0x2d5d0000)
 tenured generation   total 49152K, used 0K [0x2e5d0000, 0x315d0000, 0x345d0000)
   the space 49152K,   0% used [0x2e5d0000, 0x2e5d0000, 0x2e5d0200, 0x315d0000)
 compacting perm gen  total 32768K, used 518K [0x345d0000, 0x365d0000, 0x385d0000)
   the space 32768K,   1% used [0x345d0000, 0x34651a00, 0x34651a00, 0x365d0000)
No shared spaces configured.

Dynamic libraries:
0x00400000 - 0x0040f000  C:\Tomcat 6.0\bin\tomcat6.exe
0x7c920000 - 0x7c9b4000  C:\WINDOWS\system32\ntdll.dll
0x7c800000 - 0x7c91d000  C:\WINDOWS\system32\kernel32.dll
0x77d10000 - 0x77d9f000  C:\WINDOWS\system32\USER32.dll
0x77ef0000 - 0x77f37000  C:\WINDOWS\system32\GDI32.dll
0x77da0000 - 0x77e49000  C:\WINDOWS\system32\ADVAPI32.dll
0x77e50000 - 0x77ee2000  C:\WINDOWS\system32\RPCRT4.dll
0x77fc0000 - 0x77fd1000  C:\WINDOWS\system32\Secur32.dll
0x77be0000 - 0x77c38000  C:\WINDOWS\system32\MSVCRT.dll
0x7d590000 - 0x7dd83000  C:\WINDOWS\system32\SHELL32.dll
0x77f40000 - 0x77fb6000  C:\WINDOWS\system32\SHLWAPI.dll
0x76300000 - 0x7631d000  C:\WINDOWS\system32\IMM32.DLL
0x62c20000 - 0x62c29000  C:\WINDOWS\system32\LPK.DLL
0x73fa0000 - 0x7400b000  C:\WINDOWS\system32\USP10.dll
0x77180000 - 0x77283000  C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.2982_x-ww_ac3f9c03\comctl32.dll
0x5d170000 - 0x5d20a000  C:\WINDOWS\system32\comctl32.dll
0x6d7c0000 - 0x6da10000  C:\jre1.6.0_07\bin\client\jvm.dll
0x76b10000 - 0x76b3a000  C:\WINDOWS\system32\WINMM.dll
0x7c340000 - 0x7c396000  C:\WINDOWS\system32\MSVCR71.dll
0x6d270000 - 0x6d278000  C:\jre1.6.0_07\bin\hpi.dll
0x76bc0000 - 0x76bcb000  C:\WINDOWS\system32\PSAPI.DLL
0x6d770000 - 0x6d77c000  C:\jre1.6.0_07\bin\verify.dll
0x6d310000 - 0x6d32f000  C:\jre1.6.0_07\bin\java.dll
0x6d7b0000 - 0x6d7bf000  C:\jre1.6.0_07\bin\zip.dll
0x6d570000 - 0x6d583000  C:\jre1.6.0_07\bin\net.dll
0x71a20000 - 0x71a37000  C:\WINDOWS\system32\WS2_32.dll
0x71a10000 - 0x71a18000  C:\WINDOWS\system32\WS2HELP.dll
0x719c0000 - 0x719fe000  C:\WINDOWS\system32\mswsock.dll
0x60fd0000 - 0x61025000  C:\WINDOWS\system32\hnetcfg.dll
0x71a00000 - 0x71a08000  C:\WINDOWS\System32\wshtcpip.dll
0x6d350000 - 0x6d35d000  C:\jre1.6.0_07\bin\JdbcOdbc.dll
0x73540000 - 0x7357d000  C:\WINDOWS\system32\ODBC32.dll
0x76320000 - 0x76367000  C:\WINDOWS\system32\comdlg32.dll
0x20000000 - 0x20017000  C:\WINDOWS\system32\odbcint.dll
0x76990000 - 0x76acd000  C:\WINDOWS\system32\ole32.dll
0x770f0000 - 0x7717b000  C:\WINDOWS\system32\OLEAUT32.dll
0x76fa0000 - 0x7701f000  C:\WINDOWS\system32\CLBCATQ.DLL
0x77020000 - 0x770ba000  C:\WINDOWS\system32\COMRes.dll
0x77bd0000 - 0x77bd8000  C:\WINDOWS\system32\VERSION.dll
0x0f9a0000 - 0x0f9ab000  C:\WINDOWS\system32\VBAJET32.DLL
0x5adc0000 - 0x5adf7000  C:\WINDOWS\system32\uxtheme.dll
0x4aac0000 - 0x4ab04000  C:\WINDOWS\system32\odbcjt32.dll
0x1b000000 - 0x1b170000  C:\WINDOWS\system32\msjet40.dll
0x1b5d0000 - 0x1b665000  C:\WINDOWS\system32\mswstr10.dll
0x4b4e0000 - 0x4b4ee000  C:\WINDOWS\system32\odbcji32.dll
0x1b2c0000 - 0x1b2cd000  C:\WINDOWS\system32\msjter40.dll
0x1b2d0000 - 0x1b2f6000  C:\WINDOWS\system32\MSJINT40.DLL
0x1b810000 - 0x1b84a000  C:\WINDOWS\system32\msjtes40.dll
0x0f9c0000 - 0x0fa22000  C:\WINDOWS\system32\expsrv.dll
0x10000000 - 0x10166000  C:\Program Files\MATLAB\R2008a\bin\win32\nativemcl.dll
0x7ad60000 - 0x7adb2000  C:\Program Files\MATLAB\R2008a\bin\win32\libmx.dll
0x7ac90000 - 0x7ad5b000  C:\Program Files\MATLAB\R2008a\bin\win32\libut.dll
0x76c60000 - 0x76c88000  C:\WINDOWS\system32\imagehlp.dll
0x7b4d0000 - 0x7b4ef000  C:\Program Files\MATLAB\R2008a\bin\win32\LIBEXPAT.dll
0x78130000 - 0x781cb000  C:\WINDOWS\WinSxS\x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.762_x-ww_6b128700\MSVCR80.dll
0x7b040000 - 0x7b117000  C:\Program Files\MATLAB\R2008a\bin\win32\icuuc36.dll
0x7a820000 - 0x7a824000  C:\Program Files\MATLAB\R2008a\bin\win32\icudt36.dll
0x7a830000 - 0x7a83c000  C:\Program Files\MATLAB\R2008a\bin\win32\icuio36.dll
0x7aaf0000 - 0x7abb2000  C:\Program Files\MATLAB\R2008a\bin\win32\icuin36.dll
0x7c420000 - 0x7c4a7000  C:\WINDOWS\WinSxS\x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.762_x-ww_6b128700\MSVCP80.dll
0x78680000 - 0x78692000  C:\Program Files\MATLAB\R2008a\bin\win32\zlib1.dll
0x091b0000 - 0x0922e000  C:\Program Files\MATLAB\R2008a\bin\win32\mclmcr.dll
0x79710000 - 0x79746000  C:\Program Files\MATLAB\R2008a\bin\win32\mcr.dll
0x7a840000 - 0x7a857000  C:\Program Files\MATLAB\R2008a\bin\win32\iqm.dll
0x7adc0000 - 0x7af93000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwservices.dll
0x7afa0000 - 0x7b036000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwmathutil.dll
0x791b0000 - 0x791e3000  C:\Program Files\MATLAB\R2008a\bin\win32\mpath.dll
0x7b500000 - 0x7b515000  C:\Program Files\MATLAB\R2008a\bin\win32\mlutil.dll
0x5fdd0000 - 0x5fe24000  C:\WINDOWS\system32\NETAPI32.dll
0x78550000 - 0x7856a000  C:\Program Files\MATLAB\R2008a\bin\win32\bridge.dll
0x7a870000 - 0x7a87e000  C:\Program Files\MATLAB\R2008a\bin\win32\libmex.dll
0x795e0000 - 0x79638000  C:\Program Files\MATLAB\R2008a\bin\win32\m_dispatcher.dll
0x78570000 - 0x7858c000  C:\Program Files\MATLAB\R2008a\bin\win32\datasvcs.dll
0x78a30000 - 0x78bf2000  C:\Program Files\MATLAB\R2008a\bin\win32\xerces-c_2_7.dll
0x79c90000 - 0x7a1a0000  C:\Program Files\MATLAB\R2008a\bin\win32\m_interpreter.dll
0x78590000 - 0x785b1000  C:\Program Files\MATLAB\R2008a\bin\win32\libmat.dll
0x7abc0000 - 0x7ac85000  C:\Program Files\MATLAB\R2008a\bin\win32\libhdf5.dll
0x794f0000 - 0x79539000  C:\Program Files\MATLAB\R2008a\bin\win32\profiler.dll
0x7a8d0000 - 0x7a8d9000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwmathrng.dll
0x78600000 - 0x78612000  C:\Program Files\MATLAB\R2008a\bin\win32\m_pcodeio.dll
0x79170000 - 0x791a4000  C:\Program Files\MATLAB\R2008a\bin\win32\m_ir.dll
0x797c0000 - 0x79c8b000  C:\Program Files\MATLAB\R2008a\bin\win32\m_parser.dll
0x7a860000 - 0x7a86d000  C:\Program Files\MATLAB\R2008a\bin\win32\ir_xfmr.dll
0x782e0000 - 0x78411000  C:\Program Files\MATLAB\R2008a\bin\win32\mcos.dll
0x7a900000 - 0x7a90a000  C:\Program Files\MATLAB\R2008a\bin\win32\mtok.dll
0x785e0000 - 0x785f6000  C:\Program Files\MATLAB\R2008a\bin\win32\m_pcodegen.dll
0x7a810000 - 0x7a81d000  C:\Program Files\MATLAB\R2008a\bin\win32\boost_thread-vc80-mt-1_34_1.dll
0x7a6e0000 - 0x7a764000  C:\Program Files\MATLAB\R2008a\bin\win32\udd.dll
0x7b120000 - 0x7b20d000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwgui.dll
0x786e0000 - 0x78860000  C:\Program Files\MATLAB\R2008a\bin\win32\hg.dll
0x790b0000 - 0x790ea000  C:\Program Files\MATLAB\R2008a\bin\win32\jmi.dll
0x78dd0000 - 0x78dfa000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwhardcopy.dll
0x79130000 - 0x79169000  C:\Program Files\MATLAB\R2008a\bin\win32\libuij.dll
0x78860000 - 0x78a22000  C:\Program Files\MATLAB\R2008a\bin\win32\numerics.dll
0x7a8a0000 - 0x7a8aa000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwblas.dll
0x7a890000 - 0x7a89c000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwbinder.dll
0x785c0000 - 0x785df000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwlapack.dll
0x7b4f0000 - 0x7b4f8000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwfftw.dll
0x7b520000 - 0x7b54a000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwrookfastbp.dll
0x78e00000 - 0x78e27000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwma57.dll
0x7aa40000 - 0x7aaeb000  C:\Program Files\MATLAB\R2008a\bin\win32\libifcoremd.dll
0x791f0000 - 0x7949f000  C:\Program Files\MATLAB\R2008a\bin\win32\libmmd.dll
0x7a8c0000 - 0x7a8c8000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwcsparse.dll
0x796a0000 - 0x79707000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwumfpack.dll
0x7a880000 - 0x7a888000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwamd.dll
0x79540000 - 0x79593000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwcholmod.dll
0x7a8b0000 - 0x7a8b8000  C:\Program Files\MATLAB\R2008a\bin\win32\libmwcolamd.dll
0x7a770000 - 0x7a804000  C:\Program Files\MATLAB\R2008a\bin\win32\uiw.dll
0x7a940000 - 0x7a949000  C:\Program Files\MATLAB\R2008a\bin\win32\uinone.dll
0x781d0000 - 0x782df000  C:\WINDOWS\WinSxS\x86_Microsoft.VC80.MFC_1fc8b3b9a1e18e3b_8.0.50727.762_x-ww_3bf8fa05\MFC80.DLL
0x72f70000 - 0x72f96000  C:\WINDOWS\system32\WINSPOOL.DRV
0x79750000 - 0x797b2000  C:\Program Files\MATLAB\R2008a\bin\win32\udd_mi.dll
0x78620000 - 0x78632000  C:\Program Files\MATLAB\R2008a\bin\win32\mwoles05.DLL
0x794a0000 - 0x794e3000  C:\Program Files\MATLAB\R2008a\bin\win32\comcli.dll
0x7c630000 - 0x7c64b000  C:\WINDOWS\WinSxS\x86_Microsoft.VC80.ATL_1fc8b3b9a1e18e3b_8.0.50727.762_x-ww_cbb27474\ATL80.DLL
0x7a8f0000 - 0x7a8fb000  C:\Program Files\MATLAB\R2008a\bin\win32\mlautoregister.dll
0x09e50000 - 0x09e69000  C:\Program Files\MATLAB\R2008a\bin\win32\ctfarchiver.dll
0x09e80000 - 0x09ea1000  C:\Program Files\MATLAB\R2008a\bin\win32\dservices.dll
0x09ec0000 - 0x09ecd000  C:\Program Files\MATLAB\R2008a\bin\win32\ctfrt.dll
0x09ee0000 - 0x09f41000  C:\Program Files\MATLAB\R2008a\bin\win32\ctfrtcrypto.dll
0x7b7f0000 - 0x7c0b2000  C:\Program Files\MATLAB\R2008a\bin\win32\mkl.dll
0x790f0000 - 0x7912e000  C:\Program Files\MATLAB\R2008a\bin\win32\libguide40.dll
0x7b210000 - 0x7b216000  C:\Program Files\MATLAB\R2008a\bin\win32\mklcompat.dll
0x7a1a0000 - 0x7a650000  C:\Program Files\MATLAB\R2008a\bin\win32\mllapack.dll
0x7b700000 - 0x7b7e4000  C:\Program Files\MATLAB\R2008a\bin\win32\libfftw3i.dll
0x7a950000 - 0x7aa3f000  C:\Program Files\MATLAB\R2008a\bin\win32\libfftw3f.dll
0x5d360000 - 0x5d36a000  C:\WINDOWS\WinSxS\x86_Microsoft.VC80.MFCLOC_1fc8b3b9a1e18e3b_8.0.50727.762_x-ww_91481303\MFC80CHS.DLL
0x6d000000 - 0x6d12e000  C:\jre1.6.0_07\bin\awt.dll

VM Arguments:
jvm_args: -Xss512k -XX:PermSize=32M -Xms64m -XX:NewRatio=3 -XX:MaxPermSize=64M -Xmx128m -XX:MaxDirectMemorySize=1200000000 -Dsun.java2d.noddraw=true -Dsun.awt.nopixfmt=true -Xshare:off -Xrs -Djava.library.path=C:\Program Files\MATLAB\R2008a\bin\win32 vfprintf abort
java_command: <unknown>
Launcher Type: generic

Environment Variables:
JAVA_HOME=C:\jdk1.6.0_07
CLASSPATH=C:\jdk1.6.0_07\lib\dt.jar;C:\jdk1.6.0_07\lib\tools.jar;C:\Program Files\MATLAB\R2008a\toolbox\javabuilder\jar\javabuilder.jar;C:\Tomcat 6.0\lib\servlet-api.jar;C:\Tomcat 6.0\webapps\stock\WEB-INF\lib\stock.jar
PATH=.;C:\jdk1.6.0_07\BIN;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\MATLAB\R2008a\bin;C:\Program Files\MATLAB\R2008a\bin\win32
OS=Windows_NT
PROCESSOR_IDENTIFIER=x86 Family 6 Model 23 Stepping 10, GenuineIntel



---------------  S Y S T E M  ---------------

OS: Windows XP Build 2600 Service Pack 2

CPU:total 2 family 6, cmov, cx8, fxsr, mmx, sse, sse2

Memory: 4k page, physical 914532k(328120k free), swap 2215668k(1709180k free)

vm_info: Java HotSpot(TM) Client VM (1.6.0-b105) for windows-x86, built on Nov 29 2006 00:48:48 by "java_re" with unknown MS VC++:1310