What is types of exception handling in java javatpoint

What is types of exception handling in java javatpoint

I'm happy to respond in English for you.

Java provides several types of exception handling mechanisms, which are categorized into three main groups: built-in exceptions, user-defined exceptions, and finally block.

Built-in Exceptions

Java has a set of built-in exception classes that can be used to handle various types of errors. These exceptions are defined in the java.lang package. Some common built-in exceptions include:

User-Defined Exceptions

Java also allows you to create your own custom exception classes using the extends Exception syntax. This is useful for handling errors specific to your application domain. For example, if you're writing a banking system, you might define a InsufficientFundsException class to handle situations where a user tries to withdraw more money than they have available.

Finally Block

The finally block is executed regardless of whether an exception was thrown or not. It's useful for releasing resources such as file handles or network connections that were acquired in the try block.

Here's an example of how you might use exception handling mechanisms in Java:

public class BankAccount {
private double balance;
public void withdraw(double amount) throws InsufficientFundsException {
if (amount > balance) {
throw new InsufficientFundsException("Insufficient funds!");
} else {
balance -= amount;
}
}
public static void main(String[] args) {
BankAccount account = new BankAccount();
try {
account.withdraw(100);
} catch (InsufficientFundsException e) {
System.out.println(e.getMessage());
} finally {
// release any resources here
System.out.println("Finally block executed!");
}
}
}

In this example, the withdraw method throws an InsufficientFundsException if the user tries to withdraw more money than they have available. The main method catches and handles this exception using a try-catch block. The finally block is executed regardless of whether an exception was thrown or not.

Overall, Java's exception handling mechanisms provide a robust way to handle errors and exceptions in your code, allowing you to write more robust and reliable applications.

What are two types of exceptions in Java?

I'd be happy to help!

In Java, an exception is an event that occurs during the execution of a program that disrupts the normal flow of instructions. Two main types of exceptions in Java are:

Checked exceptions are "checked" because the compiler forces you to handle them explicitly by either catching and handling them within a try-catch block or by allowing them to propagate up the call stack. This ensures that your code is prepared for potential errors and can take appropriate action when an exception occurs.

Unlike checked exceptions, unchecked exceptions are not "checked" and can propagate up the call stack without being caught. However, it's still important to catch and handle them within a try-catch block to prevent your program from crashing unexpectedly.

In summary, Java exceptions are categorized into two main types: checked exceptions and unchecked exceptions. Checked exceptions are predictable and require explicit handling at compile-time, while unchecked exceptions can occur unexpectedly and are not handled explicitly by the compiler. Understanding these two types of exceptions is crucial for writing robust and fault-tolerant code in Java.

Is there anything specific you'd like me to elaborate on or any questions you have about exceptions in Java?