What are Java Buzzwords? Mention any four.

Write the general structure of a Java program and mark the main method.

Give a short code showing if–else if ladder in Java.

How do you declare and initialize a two-dimensional array in Java?

Define a class and an object with a small example.

Explain method overriding with an example hierarchy.

How do you write data to a file using FileWriter?

Differentiate between checked and unchecked exceptions.

What happens when an exception is not caught?

Write a code snippet to find length of a string and reverse it.

Differentiate between String and StringBuffer classes.

How can you compare two strings ignoring case?

Show an example of searching for a substring inside a string.

What is a thread? How do you create a thread by extending Thread?

Show minimal code of a JavaFX application class with start() method.

How do you create a form with text fields and button in JavaFX?

What are the steps to connect Java to a database using JDBC?

Write a code fragment to insert a record into a database table.

How do you retrieve data using SELECT query in JDBC?