Why is string class considered immutable?
What are the wrapped, classes?
Name the components that are termed to be Heavy-weight component but available in Light-weight components?
Explain purpose of sleep() method in java?
Which is bigger float or double java?
What is java autoboxing?
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 arraylist e?
What does exclamation mean in java?
What are the major advantages of internal iteration over external iteration?
Is java based on c?
What is a default package ?
Which command from the jdk compiles a java program?