Java based application development importance.pdf

Java based application development importance Unit 1 1. What are the key features of Java, and why is it considered platform-independent? 2. Explain the structure of a basic Java program, including the role of Java tokens. 3. What are checked and unchecked exceptions in Java? How do you...

Java based application development importance Unit 1 1. What are the key features of Java, and why is it considered platform-independent? 2. Explain the structure of a basic Java program, including the role of Java tokens. 3. What are checked and unchecked exceptions in Java? How do you handle them using the try-catch-finally block? 4. Describe the role of predefined and user-defined packages in Java. How are they imported and used in programs? 5. Explain the process of creating and managing threads in Java. What are the lifecycle states of a thread? 6. What is synchronization in Java, and how is it used to handle concurrent access to resources by multiple threads? 7. Explain the process of creating and managing threads in Java. What are the lifecycle states of a thread? 8. How does the `this` keyword work in Java? Illustrate with an example. Unit 2 1. What are the core interfaces of the Java Collection Framework, and how do they differ from each other (List, Set, Map)? 2. Describe the key components of the Swing API and explain how Swing differs from AWT in Java. 3. Explain the purpose of the `JComponent` class in Swing. How does it enhance GUI design? 4. What are the key differences between `JScrollPane` and `JDesktopPane` in Java Swing? 5. How are `PreparedStatement` and `CallableStatement` different in JDBC? When would you use each? 6. What is `ResultSetMetaData` in JDBC? How is it useful when working with database result sets? 7. Describe the Event Delegation Model in Java. How does it simplify event handling? 8. What is the JDBC architecture? Explain the role of different JDBC drivers in database connectivity. Unit 3 1. How does session tracking work in servlets? Compare session management methods such as cookies, HTTPSession, and URL rewriting. 2. What is the difference between `RequestDispatcher` and `sendRedirect` methods in servlets? Provide use cases for both. 3. Explain how the Filter API works in Java servlets. What are its advantages? 4. What are the key components of JSP? How does it differ from servlets in terms of usage and architecture? 5. What are JSP Implicit Objects? Provide examples and explain their roles in JSP programming. How do you insert and delete nodes in a graph? 6. What is the Abstract Data Type (ADT) for a graph, and why is it important in computer science? 7. Explain how to handle exceptions in JSP. How is it different from handling exceptions in servlets? 8. What is JSON? Compare its structure with XML and explain how JSON is used in Java applications. all 1. Explain the difference between classes and objects in Java. How do constructors play a role in object creation? Provide an example of a class with a constructor. 2. Describe the concept of exception handling in Java. What are the differences between checked and unchecked exceptions, and how are they managed using the try-catch-finally block? 3. What are the main components of the Java Collection Framework? Discuss the differences between the List, Set, and Map interfaces, providing examples of each. 4. How does the Java Database Connectivity (JDBC) architecture facilitate database interaction in Java applications? Explain the role of different JDBC drivers. 5. Compare Servlets and JavaServer Pages (JSP). Discuss their respective lifecycles and how they are used to create dynamic web content. 6. What are the key features of Java that distinguish it from other programming languages? Discuss how these features enhance the development of applications. 7. What is the significance of packages in Java? Differentiate between predefined packages and user-defined packages, and explain how they are imported into a Java program.