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|Core Java - Interview Questions and Answers for 'Java headless' - 1 question(s) found - Order By Newest|
|Ans. It’s a mode that can be used for creating Back end application without the front end UI.|
The advantage is that it reduces the number of packages that needs to be loaded ( by ignoring ui packages )
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|Difference between == and .equals() ?|
|Why is String immutable in Java ?|
| Explain the scenerios to choose between String , StringBuilder and StringBuffer ?|
What is the difference between String , StringBuilder and StringBuffer ?
|What are the difference between composition and inheritance in Java?|
|Does garbage collection guarantee that a program will not run out of memory?|
|Why Char array is preferred over String for storing password?|
|What are different ways to create String Object? Explain.|
|What is a Lambda Expression ? What's its use ?|
|Why do we need Inner classes ? Cant we just work with outer classes wherever we implement Inner classes ?|
|What is the difference between declaration, instantiation and initialization ?|