Purpose of J2EE is_____

• to provide a platform for developing and running enterprise applications

• to enhance desktop application and Enterprise performance

• to provide a platform for running only enterprise applications

• to create simple web pages

______ is used to find and fix bugs in Java programs

• Compiler
• JDM

• JVM
• JDB

What does JDK stand for in Java programming?

• Java Development Kit

• Java Data Kit

• Java Deployment Kit

• Java Design Kit

What are the key differences between List and Set in the Java Collection Framework?

• List does not allow duplicates and guarantees order.
• Set allows duplicates and maintains order.
• List Maintains order

• List allows duplicates and Set does not allow duplicates

Which method is used to check if a specific element exists in a collection?

• has()

• find()

• exists()

• contains()

The retainAll() method of Java Collection Interface keeps only those elements in this queue that are present in the specified collection.

• TRUE

• FALSE

The addAll(Collection c) method adds all elements of the specified collection to the current collection from index 1.

• FALSE
• TRUE

In the J2EE architecture, which tier is responsible for handling the business logic?

• Middle Tier

• Database tier
• EIS tier

• Client tier

The client request is processed by the ______

S______C______ object is used to store data that is accessible to all servlets in a web application?