 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. ... 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 null value is not a keyword. Latest Answer : ...true, false, and null might seem like keywords, but they are actually literals; you cannot use them as identifiers in your programs.[1][1]:http://java.sun.com/docs/books/tutorial/java/nutsandbolts/_keywords.html ... 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 : public can be used as it is the only access modifier which can access any class or methods from any class or package. ... 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 ... The sizeof operator is not a keyword. Latest Answer : No,sizeof is not a keyword. ...
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