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 Related Questions Objects that subclass the Observable class maintain a list of observers. When anObservable object is updated it invokes the update() method of each of its observers tonotify the observers that it has changed Latest Answer : Observer observe only those class which are Observable. ... With respect to multithreading, synchronization is the capability to control the access ofmultiple threads to shared resources. Without synchronization, it is possible for onethread to modify a shared Latest Answer : Synchronization is the mechanism that ensures that only one thread is accessed the resources at a time. In a practical point of view assume that two threads are trying to update bank balance at the same time!!! How we can solve this issue the answer is sychronization. ... Yes, a lock can be acquired on a class. This lock is acquired on the class's Class object.. Latest Answer : As your might already know, any synchronisation needs an object (monitor) to acquire lock one. See below for the three different types on how to synchronise code.public class A{ // A monitor object of sycnhronising piece of code. private ... The setLayout() method is used to specify a container's layout. The Vector class provides the capability to implement a growable array of objects Latest Answer : A vector implements dynamic array, which can grow and shrink dynamically.It is similar to Arraylist with a difference that vector can be synchronized. it also contain some legacy methods. ... A (non-local) inner class may be declared as public, protected, private, static, final, orabstract. Latest Answer : An inner class is a full pledged member of the enclosing class (outer class), so it can be marked with any access modifier including abstract or final modifiers(neer both abstract and final together). But an inner class cannot contain any static members ... setBounds() Latest Answer : component.setBounds(-,-,-,-); ... When a task invokes its yield() method, it returns to the ready state. When a task invokesits sleep() method, it returns to the waiting state. Latest Answer : yield method is mainly used to release the lock of resource and pull up in to steady state from wait pool. Sleep() will pull the thread to sleep for the given time. It will throws exception while trying to intrupt in b/w the sleep state ... The EventObject class and the EventListener interface support event processing. Latest Answer : Java.util.Event class ... An object's finalize() method cannot be invoked by the garbage collector while the objectis still reachable. However, an object's finalize() method may be invoked by otherobjects. Latest Answer : No, reachable obejcts can not be garbage collected ...
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