Java Programming for Complete Beginners - Java 16 - Step 13 - Basics of Handling Exceptions - Puzzles 2

The video tutorial covers exception handling in Java, focusing on null pointer exceptions and the importance of correctly ordering catch blocks according to the exception hierarchy. It also introduces a new feature in Java 7 that allows handling multiple exceptions in a single catch block using a pipe symbol. The tutorial aims to clarify common puzzles and misconceptions related to exception handling in Java.

What happens to a null pointer exception if it is not handled within the method where it occurs?

• It causes the program to terminate immediately.

• It propagates up the call stack.

• It is caught automatically by the JVM.

• It is ignored and the program continues.

Why might a Java program fail to compile when dealing with multiple catch blocks?

• The catch blocks are not in the correct order of hierarchy.

• The catch blocks are missing a finally block.

• The catch blocks are not enclosed in a try block.

• The catch blocks are using incorrect exception names.

In Java, how should catch blocks be ordered to avoid compilation errors?

• In the order they are likely to occur.

• From the most specific exception to the most general.

• Alphabetically by exception name.

• From the most general exception to the most specific.

What new feature in Java 7 allows handling multiple exceptions in a single catch block?

• Using a colon to separate exceptions.

• Using a comma to separate exceptions.

• Using a pipe symbol to separate exceptions.

• Using a semicolon to separate exceptions.

How can you handle both IO and SQL exceptions in a single catch block in Java 7?

• By using a pipe symbol between the exceptions.

• By using a colon between the exceptions.

• By using a semicolon between the exceptions.

• By using a comma between the exceptions.