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What is the difference between a MenuItem and a CheckboxMenuItem
The CheckboxMenuItem class extends the MenuItem class to support a menu item thatmay be checked or unchecked.
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Primitive Types
What happens when you add a primitive type (e.g. double) value to a collection?
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What is the purpose of finalization
The purpose of finalization is to give an unreachable object the opportunity to performany cleanup processing before the object is garbage collected.
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How is it possible for two String objects with identical values not to be equal under the == operator?
The == operator compares two objects to determine if they are the same object in memory. It is possible for two String objects to have the same value, but located indifferent areas of memory.
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Are there any other 'marker' interfaces?
java.rmi.Remotejava.util.EventListener
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Double Value
What happens when you add a double value to a String?
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Object Class
When you declare a class, why does it automatically extends to object class? Give 2 reasons.
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Objects are sometimes referred to as __________ of a class
A) InhertienceB) InstancesC) InterfacesD) Inhibitors
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Interface and Abstract Class Usage
When will you use an interface and abstract class?
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What happens when a thread cannot acquire a lock on an object
If a thread attempts to execute a synchronized method or synchronized statement and isunable to acquire an object's lock, it enters the waiting state until the lock becomesavailable.
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Java supports multiple inheritance
Skill/Topic: InheritanceA) TrueB) False
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How to convert .class to .java?
How to convert or achieve the program from .class file??
Java Interview Questions
Ans