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Core Java Interview Questions and Answers

Ques 76. What are the different types of qualifier and what is the default qualifier?

Ans.

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Ques 77. What is the super class of Hashtable?
Ans. Dictionary
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Ques 78. What is a lightweight component?
Ans. Lightweight components are the one which doesn't go with the native call to obtain the graphical units. They share their parent component graphical units to render them. Example, Swing components
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Ques 79. What is a heavyweight component?
Ans. For every paint call, there will be a native call to get the graphical units. Example, AWT.
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Ques 80. What do you mean by a Classloader?
Ans. Classloader is the one which loads the classes into the JVM.
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