How to register Key fingerprint with JVM 1.4.2?

Question

Hi,
We need to register RSA key fingerprint with JVM 1.4.2. Does anyone know about this how to go about it?
Thanks,
Asawari

Answer 1

Hi,
as far as I know there is no "official" API in 1.4.2 to do this (since 1.5 there are the Management APIs). But I had the same problem once and found a pretty easy solution: Put the "perf.jar" and "perfdata.jar" from the 1.4.2 jvmstat distribution into your classpath (I hope you can find the old download somewhere...).
The following piece of code demostrates how to access the perfdata from the JVM (note: with new VMIdentifier(0) you access your own JVM, so running the little sample program without any argument (or argument "0") would introspect the own JVM).
import com.sun.jvmstat.perfdata.monitor.local.*;
import com.sun.jvmstat.monitor.*;
import java.util.*;
public class PerfDataReader {
    public PerfDataReader() {
    public void run(String[] args) {
    try {
      PerfDataBuffer perfDataBuffer = new PerfDataBuffer(new VMIdentifier((args.length == 0 ? "0" : args[0])));
      System.out.println("VmId="+perfDataBuffer.getLocalVmId());
      List l = perfDataBuffer.findByPattern(".*");
      for (int i=0; i<l.size(); i++) {
          Monitor m = (Monitor)l.get(i);
          System.out.println(m.getName()+" = "+m.getValue());
    } catch(Exception e) {
      e.printStackTrace();
    public static void main(String[] args) {
        PerfDataReader main = new PerfDataReader();
        main.run(args);
}Hope this helps!
Nick.