Under the strictest definition, an interface may contain only:

How do you prevent a class from being extended by a subclass?

Can you declare an abstract class with no abstract methods?

________ is when a subclass implements a method that is already provided by a superclass.

What is a token?

What is displayed when the following code is compiled and executed? String s1 = new String('Test'); String s2 = new String('Test'); if (s1==s2) System.out.println('Same'); if (s1.equals(s2)) System.out.println('Equals');

Which language feature ensures that objects implementing the AutoCloseable interface are closed when it completes?

You have a variable of named employees of type List containing multiple entries. The Employee type has a method getName() that returns te employee name. Which statement properly extracts a list of employee names?

Which class does not implement the java.util.Collection interface?

Which class acts as root class for Java Exception hierarchy?

You have an instance of type Map named instruments containing the following key-value pairs: guitar=1200, cello=3000, and drum=2000. If you add the new key-value pair cello=4500 to the Map using the put method, how many elements do you have in the Map when you call instruments.size()?