JNI Interview Questions - Part3

1)Can I use JDI to monitor which the classes that are being loaded and information about which classloader is being used to load each of the classes?

import java.io.*; import java.util.*; import com.sun.jdi.*; import com.sun.jdi.connect.*; import com.sun.jdi.event.*; import com.sun.jdi.requirement.

2)What is JAWIN?

The Java/Win32 integration project is free, open source architecture for interoperation between Java and components exposed through Microsoft.

3)How can I start a shutdown without using JNI on my Windows box?

You can call Runtime.exec() and execute rundll32.exe with a few parameters. rundll32.exe shell32.dll, SHExitWindowsEx (to close the session) rundll32.exe.

4)How to make calls to C or C++ methods from a Servlets?

We have to use JNI.

5)Can I insert ActiveX controls in SWT?

Yes.

6)What is SWT?

SWT is the software component (part of the Eclipse IDE Framework) that delivers native widget functionality for the Eclipse platform in an operating...

7)How can I use JNI with WebSphere Application Server (WAS)?

One problem is that Servlets cannot load libraries because they are in a custom classloader. Move the Servlets to a location in the application server...

8)can I call activex control developed in VB/VC in java using JNI? Is it possible to call activex control developed in VB/VC from JAVA and if yes how?

Yes, it's possible: Bridge2Java (from IBM alphaWorks) allows Java programs to communicate easily with ActiveX objects, using the JNI and COM technology....

9)Tools for Native Exe generation. What tools can I use to generate a native executable from my *.class files?

These tools fall into 2 categories. Those that package interpreted code into exes (wrappers) and those that actually compile the java code to machine...

10)How can I access java from Python (and the other way around)? Are there any JNI wrappers which can bridge the gap between the two?

JPE (Java-Python Extension) is an open-source effort for seamless inter-operability between Java and Python. Java-Python Extension main site JPE