基于jni調(diào)用時,jvm報錯問題的深入分析
更新時間：2013年05月17日 10:26:19 作者：
本篇文章是對jni調(diào)用時,jvm的報錯問題進行了詳細的分析介紹，需要的朋友參考下
執(zhí)行如下的jni調(diào)用：
package jni;
public class JNITransObject {
public native TestJNI[] ObjectMethod(String text);
static {
System.loadLibrary("JNITransObject");
}
public static void main(String args[]) {
JNITransObject jniTransObject = new JNITransObject();
TestJNI[] testJNIs = jniTransObject.ObjectMethod("jni trans object");
for (int i = 0; i < testJNIs.length; i++) {
System.out.println(testJNIs[i].getTopic());
}
}
}
時，報如下的錯誤：
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d91c1db, pid=3544, tid=5408
#
# JRE version: 6.0_21-b06
# Java VM: Java HotSpot(TM) Client VM (17.0-b16 mixed mode, sharing windows-x86 )
# Problematic frame:
# V [jvm.dll+0x11c1db]
#
# 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 (0x01aa6400): JavaThread "main" [_thread_in_vm, id=5408, stack(0x00160000,0x001b0000)]
siginfo: ExceptionCode=0xc0000005, reading address 0x00000009
Registers:
EAX=0x00000005, EBX=0x00002000, ECX=0x00000006, EDX=0x23b47f28
ESP=0x001afa9c, EBP=0x001afaa8, ESI=0x01aa6400, EDI=0x01aa6400
EIP=0x6d91c1db, EFLAGS=0x00010202
Top of Stack: (sp=0x001afa9c)
0x001afa9c: 01aa6400 37b19738 3851d3b8 001afaf8
0x001afaac: 01b89f47 01aa6518 001afb00 001afb18
0x001afabc: 23b23bc0 001afb10 00000000 00002000
0x001afacc: 6d8f1751 01aa6400 00000006 001afad8
0x001afadc: 00000000 001afb18 3851ca08 00000000
0x001afaec: 3851d3b8 00000000 001afb08 001afb3c
0x001afafc: 01b82da1 38b317c8 01b88269 00002000
0x001afb0c: 00000000 23b47f28 23b23bc0 00000005
Instructions: (pc=0x6d91c1db)
0x6d91c1cb: 74 5f 8b 55 18 85 d2 74 58 8b 5d 20 8b 12 8b 00
0x6d91c1db: 8b 48 04 8b 79 08 56 53 8b 5d 1c 53 52 8b 55 14
Stack: [0x00160000,0x001b0000], sp=0x001afa9c, free space=13e001af45ck
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [jvm.dll+0x11c1db]
j java.lang.System.arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V+0
j java.lang.String.getChars(II[CI)V+62
j java.io.BufferedWriter.write(Ljava/lang/String;II)V+63
j java.io.Writer.write(Ljava/lang/String;)V+7
j java.io.PrintStream.write(Ljava/lang/String;)V+13
j java.io.PrintStream.print(Ljava/lang/String;)V+9
j java.io.PrintStream.println(Ljava/lang/String;)V+6
j jni.JNITransObject.main([Ljava/lang/String;)V+29
v ~StubRoutines::call_stub
V [jvm.dll+0xf3abc]
V [jvm.dll+0x1865b1]
V [jvm.dll+0xf3b3d]
V [jvm.dll+0xfd385]
V [jvm.dll+0x104fdd]
C [javaw.exe+0x2155]
C [javaw.exe+0x8614]
C [kernel32.dll+0x4ed6c]
C [ntdll.dll+0x637f5]
C [ntdll.dll+0x637c8]
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j java.lang.System.arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V+0
j java.lang.String.getChars(II[CI)V+62
j java.io.BufferedWriter.write(Ljava/lang/String;II)V+63
j java.io.Writer.write(Ljava/lang/String;)V+7
j java.io.PrintStream.write(Ljava/lang/String;)V+13
j java.io.PrintStream.print(Ljava/lang/String;)V+9
j java.io.PrintStream.println(Ljava/lang/String;)V+6
j jni.JNITransObject.main([Ljava/lang/String;)V+29
v ~StubRoutines::call_stub
--------------- P R O C E S S ---------------
Java Threads: ( => current thread )
0x01b2e800 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=7580, stack(0x03e10000,0x03e60000)]
0x01b21800 JavaThread "CompilerThread0" daemon [_thread_blocked, id=6392, stack(0x03dc0000,0x03e10000)]
0x01b19800 JavaThread "Attach Listener" daemon [_thread_blocked, id=6364, stack(0x03d70000,0x03dc0000)]
0x01b16c00 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=6360, stack(0x03d20000,0x03d70000)]
0x01acd000 JavaThread "Finalizer" daemon [_thread_blocked, id=6348, stack(0x03cd0000,0x03d20000)]
0x01acb800 JavaThread "Reference Handler" daemon [_thread_blocked, id=6316, stack(0x03c80000,0x03cd0000)]
=>0x01aa6400 JavaThread "main" [_thread_in_vm, id=5408, stack(0x00160000,0x001b0000)]
Other Threads:
0x01aca400 VMThread [stack: 0x03c30000,0x03c80000] [id=6320]
0x01b2f400 WatcherThread [stack: 0x03e60000,0x03eb0000] [id=4824]
VM state:not at safepoint (normal execution)
VM Mutex/Monitor currently owned by a thread: None
Heap
def new generation total 4928K, used 1479K [0x23b10000, 0x24060000, 0x29060000)
eden space 4416K, 33% used [0x23b10000, 0x23c81ef8, 0x23f60000)
from space 512K, 0% used [0x23f60000, 0x23f60000, 0x23fe0000)
to space 512K, 0% used [0x23fe0000, 0x23fe0000, 0x24060000)
tenured generation total 10944K, used 0K [0x29060000, 0x29b10000, 0x33b10000)
the space 10944K, 0% used [0x29060000, 0x29060000, 0x29060200, 0x29b10000)
compacting perm gen total 12288K, used 368K [0x33b10000, 0x34710000, 0x37b10000)
the space 12288K, 2% used [0x33b10000, 0x33b6c1d0, 0x33b6c200, 0x34710000)
ro space 10240K, 51% used [0x37b10000, 0x3803b700, 0x3803b800, 0x38510000)
rw space 12288K, 54% used [0x38510000, 0x38ba76c0, 0x38ba7800, 0x39110000)
Dynamic libraries:
0x00400000 - 0x00424000 C:\Program Files\Java\jre6\bin\javaw.exe
0x77720000 - 0x7785c000 C:\Windows\SYSTEM32\ntdll.dll
0x75b10000 - 0x75be4000 C:\Windows\system32\kernel32.dll
0x75830000 - 0x7587a000 C:\Windows\system32\KERNELBASE.dll
0x774c0000 - 0x77560000 C:\Windows\system32\ADVAPI32.dll
0x77340000 - 0x773ec000 C:\Windows\system32\msvcrt.dll
0x77870000 - 0x77889000 C:\Windows\SYSTEM32\sechost.dll
0x760b0000 - 0x76151000 C:\Windows\system32\RPCRT4.dll
0x75ec0000 - 0x75f89000 C:\Windows\system32\USER32.dll
0x76010000 - 0x7605e000 C:\Windows\system32\GDI32.dll
0x75b00000 - 0x75b0a000 C:\Windows\system32\LPK.dll
0x75a50000 - 0x75aed000 C:\Windows\system32\USP10.dll
0x77030000 - 0x7704f000 C:\Windows\system32\IMM32.DLL
0x76db0000 - 0x76e7c000 C:\Windows\system32\MSCTF.dll
0x7c340000 - 0x7c396000 C:\Program Files\Java\jre6\bin\msvcr71.dll
0x6d800000 - 0x6daa7000 C:\Program Files\Java\jre6\bin\client\jvm.dll
0x755f0000 - 0x75622000 C:\Windows\system32\WINMM.dll
0x754a0000 - 0x754ec000 C:\Windows\system32\apphelp.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
0x76e80000 - 0x76e85000 C:\Windows\system32\PSAPI.DLL
0x6d7f0000 - 0x6d7ff000 C:\Program Files\Java\jre6\bin\zip.dll
0x10000000 - 0x10039000 E:\workspace\Zhy\JNITransObject.dll
VM Arguments:
jvm_args: -Dfile.encoding=GBK
java_command: jni.JNITransObject
Launcher Type: SUN_STANDARD
Environment Variables:
JAVA_HOME=C:\Program Files\Java\jdk1.6.0_21
CLASSPATH=.;C:\Program Files\Java\jdk1.6.0_21\lib\dt.jar;C:\Program Files\Java\jdk1.6.0_21\lib\tools.jar
PATH=C:/Program Files/Java/jre6/bin/client;C:/Program Files/Java/jre6/bin;C:/Program Files/Java/jre6/lib/i386;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files\AMD APP\bin\x86;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\Common Files\Lenovo;C:\Program Files\Common Files\Ulead Systems\MPEG;C:\Program Files\Windows Live\Shared;C:\SWTOOLS\ReadyApps;C:\Program Files\Intel\Services\IPT\;C:\Program Files\Symantec\VIP Access Client\;C:\Program Files\Java\jdk1.6.0_21\bin;C:\Program Files\Java\jdk1.6.0_21\jre6\bin;C:\Program Files\TortoiseSVN\bin;C:\Program Files\Common Files\Thunder Network\KanKan\Codecs
USERNAME=think
OS=Windows_NT
PROCESSOR_IDENTIFIER=x86 Family 6 Model 42 Stepping 7, GenuineIntel
--------------- S Y S T E M ---------------
OS: Windows 7 Build 7601 Service Pack 1
CPU:total 4 (8 cores per cpu, 2 threads per core) family 6 model 42 stepping 7, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, ht
Memory: 4k page, physical 3056880k(1883100k free), swap 6112004k(3307764k free)
vm_info: Java HotSpot(TM) Client VM (17.0-b16) for windows-x86 JRE (1.6.0_21-b06), built on Jun 22 2010 00:56:49 by "java_re" with MS VC++ 7.1 (VS2003)
time: Wed Apr 11 09:46:47 2012
elapsed time: 0 seconds
發(fā)生這樣的錯誤，大多是JNI端代碼有問題，如：不恰當(dāng)?shù)?printf 及 cout 調(diào)用，方法調(diào)用類型不兼容，調(diào)用被銷毀的對象等。
復(fù)制代碼 代碼如下:
package jni;
public class JNITransObject {
public native TestJNI[] ObjectMethod(String text);
static {
System.loadLibrary("JNITransObject");
}
public static void main(String args[]) {
JNITransObject jniTransObject = new JNITransObject();
TestJNI[] testJNIs = jniTransObject.ObjectMethod("jni trans object");
for (int i = 0; i < testJNIs.length; i++) {
System.out.println(testJNIs[i].getTopic());
}
}
}
時，報如下的錯誤：
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d91c1db, pid=3544, tid=5408
#
# JRE version: 6.0_21-b06
# Java VM: Java HotSpot(TM) Client VM (17.0-b16 mixed mode, sharing windows-x86 )
# Problematic frame:
# V [jvm.dll+0x11c1db]
#
# 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 (0x01aa6400): JavaThread "main" [_thread_in_vm, id=5408, stack(0x00160000,0x001b0000)]
siginfo: ExceptionCode=0xc0000005, reading address 0x00000009
Registers:
EAX=0x00000005, EBX=0x00002000, ECX=0x00000006, EDX=0x23b47f28
ESP=0x001afa9c, EBP=0x001afaa8, ESI=0x01aa6400, EDI=0x01aa6400
EIP=0x6d91c1db, EFLAGS=0x00010202
Top of Stack: (sp=0x001afa9c)
0x001afa9c: 01aa6400 37b19738 3851d3b8 001afaf8
0x001afaac: 01b89f47 01aa6518 001afb00 001afb18
0x001afabc: 23b23bc0 001afb10 00000000 00002000
0x001afacc: 6d8f1751 01aa6400 00000006 001afad8
0x001afadc: 00000000 001afb18 3851ca08 00000000
0x001afaec: 3851d3b8 00000000 001afb08 001afb3c
0x001afafc: 01b82da1 38b317c8 01b88269 00002000
0x001afb0c: 00000000 23b47f28 23b23bc0 00000005
Instructions: (pc=0x6d91c1db)
0x6d91c1cb: 74 5f 8b 55 18 85 d2 74 58 8b 5d 20 8b 12 8b 00
0x6d91c1db: 8b 48 04 8b 79 08 56 53 8b 5d 1c 53 52 8b 55 14
Stack: [0x00160000,0x001b0000], sp=0x001afa9c, free space=13e001af45ck
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [jvm.dll+0x11c1db]
j java.lang.System.arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V+0
j java.lang.String.getChars(II[CI)V+62
j java.io.BufferedWriter.write(Ljava/lang/String;II)V+63
j java.io.Writer.write(Ljava/lang/String;)V+7
j java.io.PrintStream.write(Ljava/lang/String;)V+13
j java.io.PrintStream.print(Ljava/lang/String;)V+9
j java.io.PrintStream.println(Ljava/lang/String;)V+6
j jni.JNITransObject.main([Ljava/lang/String;)V+29
v ~StubRoutines::call_stub
V [jvm.dll+0xf3abc]
V [jvm.dll+0x1865b1]
V [jvm.dll+0xf3b3d]
V [jvm.dll+0xfd385]
V [jvm.dll+0x104fdd]
C [javaw.exe+0x2155]
C [javaw.exe+0x8614]
C [kernel32.dll+0x4ed6c]
C [ntdll.dll+0x637f5]
C [ntdll.dll+0x637c8]
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j java.lang.System.arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V+0
j java.lang.String.getChars(II[CI)V+62
j java.io.BufferedWriter.write(Ljava/lang/String;II)V+63
j java.io.Writer.write(Ljava/lang/String;)V+7
j java.io.PrintStream.write(Ljava/lang/String;)V+13
j java.io.PrintStream.print(Ljava/lang/String;)V+9
j java.io.PrintStream.println(Ljava/lang/String;)V+6
j jni.JNITransObject.main([Ljava/lang/String;)V+29
v ~StubRoutines::call_stub
--------------- P R O C E S S ---------------
Java Threads: ( => current thread )
0x01b2e800 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=7580, stack(0x03e10000,0x03e60000)]
0x01b21800 JavaThread "CompilerThread0" daemon [_thread_blocked, id=6392, stack(0x03dc0000,0x03e10000)]
0x01b19800 JavaThread "Attach Listener" daemon [_thread_blocked, id=6364, stack(0x03d70000,0x03dc0000)]
0x01b16c00 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=6360, stack(0x03d20000,0x03d70000)]
0x01acd000 JavaThread "Finalizer" daemon [_thread_blocked, id=6348, stack(0x03cd0000,0x03d20000)]
0x01acb800 JavaThread "Reference Handler" daemon [_thread_blocked, id=6316, stack(0x03c80000,0x03cd0000)]
=>0x01aa6400 JavaThread "main" [_thread_in_vm, id=5408, stack(0x00160000,0x001b0000)]
Other Threads:
0x01aca400 VMThread [stack: 0x03c30000,0x03c80000] [id=6320]
0x01b2f400 WatcherThread [stack: 0x03e60000,0x03eb0000] [id=4824]
VM state:not at safepoint (normal execution)
VM Mutex/Monitor currently owned by a thread: None
Heap
def new generation total 4928K, used 1479K [0x23b10000, 0x24060000, 0x29060000)
eden space 4416K, 33% used [0x23b10000, 0x23c81ef8, 0x23f60000)
from space 512K, 0% used [0x23f60000, 0x23f60000, 0x23fe0000)
to space 512K, 0% used [0x23fe0000, 0x23fe0000, 0x24060000)
tenured generation total 10944K, used 0K [0x29060000, 0x29b10000, 0x33b10000)
the space 10944K, 0% used [0x29060000, 0x29060000, 0x29060200, 0x29b10000)
compacting perm gen total 12288K, used 368K [0x33b10000, 0x34710000, 0x37b10000)
the space 12288K, 2% used [0x33b10000, 0x33b6c1d0, 0x33b6c200, 0x34710000)
ro space 10240K, 51% used [0x37b10000, 0x3803b700, 0x3803b800, 0x38510000)
rw space 12288K, 54% used [0x38510000, 0x38ba76c0, 0x38ba7800, 0x39110000)
Dynamic libraries:
0x00400000 - 0x00424000 C:\Program Files\Java\jre6\bin\javaw.exe
0x77720000 - 0x7785c000 C:\Windows\SYSTEM32\ntdll.dll
0x75b10000 - 0x75be4000 C:\Windows\system32\kernel32.dll
0x75830000 - 0x7587a000 C:\Windows\system32\KERNELBASE.dll
0x774c0000 - 0x77560000 C:\Windows\system32\ADVAPI32.dll
0x77340000 - 0x773ec000 C:\Windows\system32\msvcrt.dll
0x77870000 - 0x77889000 C:\Windows\SYSTEM32\sechost.dll
0x760b0000 - 0x76151000 C:\Windows\system32\RPCRT4.dll
0x75ec0000 - 0x75f89000 C:\Windows\system32\USER32.dll
0x76010000 - 0x7605e000 C:\Windows\system32\GDI32.dll
0x75b00000 - 0x75b0a000 C:\Windows\system32\LPK.dll
0x75a50000 - 0x75aed000 C:\Windows\system32\USP10.dll
0x77030000 - 0x7704f000 C:\Windows\system32\IMM32.DLL
0x76db0000 - 0x76e7c000 C:\Windows\system32\MSCTF.dll
0x7c340000 - 0x7c396000 C:\Program Files\Java\jre6\bin\msvcr71.dll
0x6d800000 - 0x6daa7000 C:\Program Files\Java\jre6\bin\client\jvm.dll
0x755f0000 - 0x75622000 C:\Windows\system32\WINMM.dll
0x754a0000 - 0x754ec000 C:\Windows\system32\apphelp.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
0x76e80000 - 0x76e85000 C:\Windows\system32\PSAPI.DLL
0x6d7f0000 - 0x6d7ff000 C:\Program Files\Java\jre6\bin\zip.dll
0x10000000 - 0x10039000 E:\workspace\Zhy\JNITransObject.dll
VM Arguments:
jvm_args: -Dfile.encoding=GBK
java_command: jni.JNITransObject
Launcher Type: SUN_STANDARD
Environment Variables:
JAVA_HOME=C:\Program Files\Java\jdk1.6.0_21
CLASSPATH=.;C:\Program Files\Java\jdk1.6.0_21\lib\dt.jar;C:\Program Files\Java\jdk1.6.0_21\lib\tools.jar
PATH=C:/Program Files/Java/jre6/bin/client;C:/Program Files/Java/jre6/bin;C:/Program Files/Java/jre6/lib/i386;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files\AMD APP\bin\x86;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\Common Files\Lenovo;C:\Program Files\Common Files\Ulead Systems\MPEG;C:\Program Files\Windows Live\Shared;C:\SWTOOLS\ReadyApps;C:\Program Files\Intel\Services\IPT\;C:\Program Files\Symantec\VIP Access Client\;C:\Program Files\Java\jdk1.6.0_21\bin;C:\Program Files\Java\jdk1.6.0_21\jre6\bin;C:\Program Files\TortoiseSVN\bin;C:\Program Files\Common Files\Thunder Network\KanKan\Codecs
USERNAME=think
OS=Windows_NT
PROCESSOR_IDENTIFIER=x86 Family 6 Model 42 Stepping 7, GenuineIntel
--------------- S Y S T E M ---------------
OS: Windows 7 Build 7601 Service Pack 1
CPU:total 4 (8 cores per cpu, 2 threads per core) family 6 model 42 stepping 7, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, ht
Memory: 4k page, physical 3056880k(1883100k free), swap 6112004k(3307764k free)
vm_info: Java HotSpot(TM) Client VM (17.0-b16) for windows-x86 JRE (1.6.0_21-b06), built on Jun 22 2010 00:56:49 by "java_re" with MS VC++ 7.1 (VS2003)
time: Wed Apr 11 09:46:47 2012
elapsed time: 0 seconds
發(fā)生這樣的錯誤，大多是JNI端代碼有問題，如：不恰當(dāng)?shù)?printf 及 cout 調(diào)用，方法調(diào)用類型不兼容，調(diào)用被銷毀的對象等。
相關(guān)文章
Java反射 JavaBean對象自動生成插入,更新,刪除,查詢sql語句操作
這篇文章主要介紹了Java反射 JavaBean對象自動生成插入,更新,刪除,查詢sql語句操作，具有很好的參考價值，希望對大家有所幫助。一起跟隨小編過來看看吧2020-08-08
SpringBoot yaml中的數(shù)組類型取值方式
這篇文章主要介紹了SpringBoot yaml中的數(shù)組類型取值方式，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教2021-09-09
IDEA插件EasyCode及MyBatis最優(yōu)配置步驟詳解
這篇文章主要介紹了IDEA插件EasyCode MyBatis最優(yōu)配置步驟詳解,本文給大家介紹的非常詳細，對大家的學(xué)習(xí)或工作具有一定的參考借鑒價值，需要的朋友可以參考下2020-12-12
這篇文章主要介紹了Java實現(xiàn)畫圖 給圖片底部添加文字標題，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教2021-11-11
java8 stream的多字段排序?qū)崿F(xiàn)(踩坑)
這篇文章主要介紹了java8 stream的多字段排序?qū)崿F(xiàn)(踩坑)，文中通過示例代碼介紹的非常詳細，對大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價值，需要的朋友們下面隨著小編來一起學(xué)習(xí)學(xué)習(xí)吧2021-03-03
current并發(fā)包、在JDK1.5之前Java并沒有提供線程安全的一些工具類去操作多線程，需要開發(fā)人員自行編寫實現(xiàn)線程安全，但仍然無法完全避免低性能、死鎖、資源管理等問題。在JDK1.5時新增了java.util.current并發(fā)包，其中提供了許多供我們使用的并發(fā)編程工具類2023-02-02
這篇文章主要為大家詳細介紹了Java中SimpleDateFormat的使用方法，具有一定的參考價值，感興趣的小伙伴們可以參考一下2017-12-12
這篇文章主要介紹了Java之int和string類型轉(zhuǎn)換詳解,本篇文章通過簡要的案例,講解了該項技術(shù)的了解與使用,以下就是詳細內(nèi)容,需要的朋友可以參考下2021-08-08
我們在開發(fā)中需要對用戶敏感數(shù)據(jù)進行加解密,比如密碼等信息,這篇文章主要為大家詳細介紹了java如何使用RSA工具進行信息加解密,感興趣的小伙伴可以了解下2023-12-12
這篇文章主要介紹了SpringBoot接口加密與解密的實現(xiàn)2023-10-10