Re: Class.forName

Roedy Green wrote:


My suggestion would be to use an agent.

import java.lang.instrument.Instrumentation;

public class TraceAgent {
     public static void premain(String args, Instrumentation inst) {
         inst.addTransformer(new TraceTransformer());
     }
}

and

import java.lang.instrument.ClassFileTransformer;
import java.lang.instrument.IllegalClassFormatException;
import java.security.ProtectionDomain;
import java.util.HashSet;
import java.util.Set;

public class TraceTransformer implements ClassFileTransformer {
     private static Set<String> clz = new HashSet<String>();
     public byte[] transform(ClassLoader loader,
                             String className,
                             Class<?> classBeingRedefined,
                             ProtectionDomain protectionDomain,
                             byte[] classfileBuffer) throws
IllegalClassFormatException {
         clz.add(className.replace("/", "."));
         return null;
     }
     public static boolean isLoaded(String className) {
         return clz.contains(className);
     }
}

and then check with:

TraceTransformer.isLoaded(clznam)

Arne