What is Exception Handling in Java?
Exceptions (and Errors) in our programs are common. Java exceptions can be caused by incorrect syntax, faulty logic, incorrect user input, a server offline, a network issue, etc. Typically, when our programs encounter an exception, they will immediately terminate execution and cause our applications to crash. This is obviously suboptimal, and nobody wants that. But, we have good news… Introducing exception handling in Java!
Exception handling in Java programmatically handles runtime errors in order to avoid disrupting the program’s normal flow. By using exception handling, we can build our programs to take appropriate actions and keep our applications from crashing when an error or exception occurs.
Java makes use of five primary keywords for exception handling: try, catch, finally, throw and throws. In the following sections, we will analyze the importance of each keyword. We’ll then discuss multiple facets of Java exception handling, including the Exception Hierarchy in Java, how to throw an exception in Java, custom exceptions in Java, and more.