Explain about main thread in java?
How can we achieve thread safety in java?
Write the program numbers into words.For example 2345==two thousand three hundred fourty five
What is the concept of multithreading?
How is tree Mirroring implemented?
What is a superclass?
In collection sorting comparable and comparator interface will be used..but why this two interfaces required..two will work same purpose so why there are two interfaces instead of one?when to use comparator and when to use comparable?
Write the algorithm to check the number non-leaf nodes in a tree.
explain about casting of objects?
What is functional interface in java?
What value is a variable of the string type automatically initialized?
Is java a virus?
What are the three best choices for a development environment?