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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. ... 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 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(-,-,-,-); ... The EventObject class and the EventListener interface support event processing. Latest Answer : Java.util.Event class ... Panel Latest Answer : The Immediate super class of Applet is PANEL ... Name three Component subclasses that support painting.The Canvas, Frame, Panel, and Applet classes support painting. Window Latest Answer : System.Windows.Forms.CommonDialog ... The CheckboxMenuItem class extends the MenuItem class to support a menu item thatmay be checked or unchecked.
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