Every Object in java has synchronisation mechanism for multithreading. You can use wait() and notify() methods on any object to synchronise your multithreaded logic. As an example

Object lock = new Object();
// later ..
synchronized (lock) {
    lock.wait(); // Will block until lock.notify() is called on another thread.
}
// Somewhere else...
synchronized (lock) {
    lock.notify(); // Will wake up lock.wait()
}

Other options are not present in Object class methods.