What is indexof?
What is protected in java?
Can a class extend abstract class or interface? why
What is treeset in java?
Can an interface implement another interface?
What is the scope or life time of instance variables?
What is static data type in java?
What is the advantage of preparedstatement over statement?
what is platform independence in java?
What are structs in java?
how to make hashmap object as synchronized object?
What is the basic functionality of DataOutput interface in java?
What is included in core java?