What does += mean coding?
Does treeset allow null in java?
What is the static method?
how to call a method in different package?
Explain the reason behind ending a program with a system.exit(0)?
What is a final class in java?
What’s the difference between callable and runnable?
what is meant by Garbage collection?
What is stack example?
Map map = new HashMap(2); map.add(“1”,”one”); map.add(“2”,”two”); map.add(“3”,”three”); What will happen at this line?
What is finalize method?
Is it possible to write a regular expression to check if string is a number?
how to create constants in java?