how to create registry key through java program?
I want to create registry key through java program to add the jar file in the start up.
RegistryKey r=new RegistryKey(RootKey.HKEY_CURRENT_USER,"Software/Microsoft/Windows/CurrentVersion/Run");
r.createSubkey("sample");
But i got the error:
Exception in thread "main" java开发者_Python百科.lang.UnsatisfiedLinkError: ca.beq.util.win32.registry.RegistryKey.testInitialized()V
at ca.beq.util.win32.registry.RegistryKey.testInitialized(Native Method)
How can i do that?
ThanksFrom the Javadoc:
Thrown if the Java Virtual Machine cannot find an appropriate native-language definition of a method declared native.
You wouldn't be on a win 64 OS by any chance?
If not, the manual for jreg mentions:
jRegistryKey
is aJNI
library. To usejRegistryKey
, the following files are required:
jRegistryKey.jar
jRegistryKey.dll
jRegistryKey.jar is the Java™ Archive (JAR) file containing the packaged Java™ class files, whereas jRegistryKey.dll is a Windows® dyanmically linked library (DLL) that contains the native (C/C++) code required to access the registry.
jRegistryKey.jar
must be included in theCLASSPATH
available to the Java™ Virtual Machine (JVM);
jRegistryKey.dll
must be located in a directory included in the Windows® PATH environment variable orjava.lang.UnsatisfiedLinkError
's will be generated
Add the JRegistryKey.jar
in the library.
Then copy and paste JRegistryKey.dll
in my project.
After that I run the same program ,The registry key is created successfully.
RegistryKey r=new RegistryKey(RootKey.HKEY_CURRENT_USER,"Software\\Microsoft\\Windows\\CurrentVersion\\Run");
RegistryValue v=new RegistryValue("name or the registrykey",ValueType.REG_SZ,"my jar file path");
r.setValue(v);
Adding jregistrykey.dll in my project didn't work for me. I included this block in my class and it worked.
static {
System.load("path\\to\\jregistrykey.dll");
}
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