Can a hashset contain duplicates java?
What does the exclamation mark mean in java?
what is the main differene between synchronize() method and Synchronize{}block?
How many unicode characters are there?
How do you set security in applets?
Can a class be defined inside an interface?
What are the steps involved to write rmi based programs?
long d =10;int i =0;i=d; /// is this possible? If d is very long number (10 digits or some thing) then?
what is the difference b/w PUT and POST method to send data to the server
how to know the total memory occupied by the objects in the ArrayList(Array list may contain duplicate objects)
What is the purpose of javac exe?
Explain the inheritance?
Write a program in java to calculate the difference between the sum of the odd level and even level nodes of a binary tree.