JNI Interview Questions - Part1

1)How to get the window handle under the Microsoft JVM?

Bu using the AWT NI can get the window handle of a canvas. However, the Java application/applet is always subject to...

import java.awt.*; import java.awt.peer.*; import com.ms.awt.peer.*; class DrawingCanvas extends java.awt.Canvas { void viewZoomBy(double.

2)Are there JVM's that work as a true 64-bit application?

IBM's SDK for Windows on Itanium Solaris TM-SPARCTM platform edition of J2SDK 1.4.0 CACAO is 64 bit just-in-time (JIT) compiler for Java

3)Can I setup Tomcat to run inside the web server process itself (on Netscape/IIS?), instead of running it as a separate process.

Yes, Look for Tomcat documentation for clear idea.

4)How to use JNI on OpenVMS?

Please click the link http://www.slac.stanford.edu/grp/cd/soft/aida/using_jni_on_openvms.htm

5)What is BootClassPath and what we it can do in Java?

Please download this PDF www.javageeks.com/Papers/BootClasspath/BootClasspath.pdf

6)How can I create standalone Java applications that can be launched just like any other Mac OS application?

You can use JManager API or JBindery to do so. Here's an article that shows you how to create a wrapper program around a Java application:

7)Is there an alternative to JNI on MacOS?

If you want to call Mac OS C code from your Java code, there are currently two mechanisms for doing so: JDirect2 and the Java Native Interface (JNI).

8)What are the changes to JAWT (AWT Native Interface) API in JDK1.4?

Added Lock() and Unlock() function pointers to the basic JAWT structure in jawt.h. These are needed to handle locking of the AWT without requiring a...

9)Am using -Xbootclasspath to add my custom jars, But this prevents loading custom JNI libraries from my user directory. Is there a work around?

That is the intended behavior. All system classes will only lookup shared libraries in $JAVA_HOME/bin. If you do need to load custom libraries for the system...

10)How can I use JBuilder to make my Java program into a native executable?

Borland Developer Support has an article on how to do this: How can I run my Java program as a native executable?