What is compiler and what its output.
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What is serialVersionUID and what is its need?
What are the two types of java?
What is the difference between a synchronized method and a synchronized block?
What is the effect of keeping a constructor private?
What are "methods" and "fields"?
What is jvm? Why is java called the platform independent programming language?
What is null mean in java?
2) Suppose there are 5 directories having lot of files (say txt files) in each directory. 2 things :- 2.1) You want to search for filenames which have a particular pattern. 2.2) Out of these filtered files you want to search for a particular keyword or a search string. How can you achieve this?
What is the purpose of static methods and static variables?
Explain treeset?
What is java object name?
What is a variable in java?