Question

package keylogger;

public class TestKeys {
private static int i = 0;
private native void setWinHook();
private native void unregisterWinHook();

public static void main(String args[]) {

    TestKeys o = new TestKeys();

    System.loadLibrary("MyHook"); // load the library that registers the hook

    Runnable r = new Runnable() {
        @Override
        public void run() {
            System.out.println("After the call to System.loadLibrary");
        }
    };
    new Thread(r,"new thread").start();  
  }
}

When i start the program,dll is loaded and does it’s work. But the statement inside the run method of new thread doesn’t get printed. Why is that ? Why doesn’t the java thread start ? The dll code doesn’t return immediately. Infact there is no way it can return.

And :

Does a new thread start when the program encounters a statement System.loadLibrary ?

Answer 1

Does a new thread start when the program encounters a statement System.loadLibrary ?

Not unless the library creates one in its initialization section.

P.S. Does the behaviour change if you join() the thread?