What's the output of following error ? class A { public Number getNumber(){ return 1; } } class B extends A { public int getNumber(){ return 2; } } public class Main{ public static void main(String []args){ A a = new B(); System.out.println(a.getNumber()); } }

java.util.Collection is:

Does Java 8 allow static methods in interfaces?

LinkedBlockingQueue is useful for...

Which four options describe the correct default values for array elements of the types indicated? 1. int -> 0 2. String -> "null" 3. Dog -> null 4. char -> '\u0000' 5. float -> 0.0f 6. boolean -> true

Which one of the following statements is true about threads in Java

The instanceof operator can be used to determine if an object is:

When creating a user defined class for storing objects in a HashMap, which method(s) should be overridden?

On which Java major release were Lambdas introduced?

What are all the different types of access modifiers in Java

The "static" keyword marks something as: