Java GUI Framework interview questions and answers

          

Java GUI Framework interview questions and answers


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The answers to following questions will be made available soon. Keep visiting.

  1. Explain the following java graphical interface framework.
  2. List out components by AWT? Explain each in brief. 
    Button
    Canvas
    Choice
    Checkbox
    Container
             Panel          
             Scrollpane
             Windows
    Label
    List
    Scrollbar
    TextComponent
             TextArea
             TextField
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Enumerations vs final variables in java.

Enumeration is type safe. Where as final variables are not. Enumeration supports to have a blend of various values...........

Array vs ArrayList vs LinkedList vs Vector in java

Array vs ArrayList: ArrayList is much better than Array, when the size need to be increased dynamically. Efficiency is possible with arrays. ArrayList permits null elements...............

Explain how to measure time in nanoseconds.

Time is measured in nanoseconds by using the method nanoTime() method. This method returns the current value of the most precise system timer available in nanoseconds.............

Explain the purpose of jar file. Can you explain how to create a jar file in java.

A Jar file contains mostly .class files and optionally other files like sound files, image files for Java applications, gathered into a single file in the compressed format.............. .

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