What is the purpose of try and catch in Java?

In Java, try and catch are keywords used for handling exceptions, capturing and dealing with potential errors that may occur during the execution of code.

The try block is used to wrap code that may throw exceptions, informing the Java virtual machine to handle the exceptions when executing that code. Inside the try block, you can place code that may throw exceptions such as input/output operations, database connections, or network communication. If an exception occurs, the remaining code in the try block will be skipped.

The catch block is used to capture and handle exceptions thrown in the try block. It can capture different types of exceptions and handle them accordingly. The catch block contains a parameter of the exception type, representing the caught exception object, and one can access the exception information through this parameter. Within the catch block, one can write code logic for handling the exception, such as printing the exception information, logging, error correction, or throwing new exceptions.

Using try and catch can effectively handle exceptions, preventing the program from crashing or producing unexpected results when encountering errors. By catching and dealing with exceptions, the program can have better resilience and reliability.