What are the 7 types of characters?

1077

How do I disallow NULL values in a table?

993

What are the 3 types of control structures?

1013

What is @override annotation in java?

977

What is an i/o filter?

1810

Why is a singleton bad?

951

How to find the given number is a prime number or not by getting input from the user

1094

When we serialize an object does the serialization mechanism saves its references too?

1017

When a thread is executing synchronized methods , then is it possible to execute other synchronized methods simultaneously by other threads?

1060

When does an object becomes eligible for garbage collection in java?

1061

What is difference between null and void?

969

What is mime in java?

902

How can you create jdbc statements?

966

What is equals method in java?

1031

What are thread local variables?

1141