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Windows api thro Jni--- very urgent

 
Greenhorn
Posts: 2
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I am trying to call the FindExecutable method in Shell32.dll thro a java stand alone progam.The code I have written works beautifully in VJ++.But when I run it at Dos prompt, it gives UnsatisfiedLinkError.Perhaps I should write a c function calling this FindExecutable method. And then I call the new c function thro jni in java. Can somebody help me.
The code is as below
class Editor {
public static native int FindExecutable(String lpFile, String lpDirectory, StringBuffer lpResult);

static {
System.loadLibrary("Shell32");
}

public static void main(String[] args) {
String temp_title="temp1.xls";
StringBuffer result=new StringBuffer(1024);
String temp="c:\\";
try{
int ireturn=new Editor().FindExecutable(temp_title,temp,result);
if(ireturn<32)
System.out.println("not found");
else
System.out.println(result);
}
catch(Exception e)
{
e.printStackTrace();
}

}
}
 
"The Hood"
Posts: 8521
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You need to use JNI (Java Native Interface) to call the DLL.
Here is a description: http://developer.java.sun.com/developer/onlineTraining/Programming/JDCBook/jni.html
And a tutorial:
http://java.sun.com/docs/books/tutorial/native1.1/index.html
Here is a discussion of DLL handling from another forum: http://www.javaranch.com/ubb/Forum45/HTML/000115.html
 
Sucheta Gautham
Greenhorn
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hi,
Thanks for the immediate response.My problem has been solved.I have compiled a c++ program calling the FindExecutable method by linking shell32.lib while making the dll.Now My java program loads the new dll and my program works fine.
Now I have a new query :
Can I make an applet access a dll.If so how?
Thank you,
Sucheta
 
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