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Through the use of inheritance, programmers can reuse the code in the superclass many times.
Skill/Topic: InheritanceA) TrueB) False
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Explicitly Extended Object
What benefit are obtained by explicitly extending Object in a class declaration?
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ArrayList to Array
How will you convert an ArrayList to an Array?
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What is the argument type of a program's main() method
A program's main() method takes an argument of the String[] type.
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System.out.println()
Why do we use 'out' in System.out.println();?
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Java Super Class
Which is the most super class of all the Java classes?
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Is a class a subclass of itself
A class is a subclass of itself.
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Interface Static Method
Why interface does not support static method?
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Subclass Frame
Why we prefer a subclass of Frame over an instance of Frame when we creating a window?
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AWT Package
What are the Limitations of AWT package?
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Heavy Weight Components
Why applets are considered as heavy weight components?
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Thread Disadvantages
What are the disadvantages of using thread?
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Why applets can run without main() method?
B'coz they can run with the help of different browsers...
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Which one of the following is a limitation of sub classing the Thread class?
Choice 1 It cannot have any static methods in the class. Choice 2 It must declare the class final. Choice 3 It cannot subclass any other class. Choice 4 It must implement the Threadable interface. Choice 5 It must catch the ThreadDeath exception
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Class Path
Why should we set class path and path environment variables while installing J2SE and why not while Turbo C?
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Stopping Threads
How one thread can be stopped without coming out from the main programme?
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Send Request in Servlets
Is it possible to send request by overriding doGet()and doPost()Methord in servlets? If Yes, How?
Java Interview Questions
Ans