The lock-object in synchronized clause.

Question

If two threads are entering a synchronized statement, what condition on the lock-statement is then tested?
Say, we have:
Object lock1 = new Object() {
         public boolean equals(Object aObj) {
            return true;
Object lock2 = new Object() {
         public boolean equals(Object aObj) {
            return true;
      };Then the statements in the two following synchronized-clauses would be able to execute concurrently:
synchronized(lock1) {
    // Some statements
... in another thread
synchronized(lock2) {
    // Some statements
}The following statement (in my test) did not execute concurrently:
synchronized("test") {
// some statements
synchronized("test") {
   // Some statements
}...but the following did:
synchronized(new String("test")) {
// some statements
synchronized("test") {
   // Some statements
}This lead me to believe that a (object == object) condition was tested (not object.equals(object)). Is this correct?

Answer 1

This lead me to believe that a (object == object)
condition was tested (not object.equals(object)). Is
this correct?No. No test is performed on the references, and equals is not called.
Kaj