In Java, an exception is essentially a problem that pops up while your program is running. Picture yourself driving and suddenly hitting a roadblock — you can't just keep going like nothing happened; you need to deal with it before continuing your journey. Exceptions work the same way in code. They're Java's way of tapping you on the shoulder and saying, "hey, something's wrong here, and it needs your attention." The Three Types of Java Exceptions Java exceptions generally fall into three buckets: checked exceptions, unchecked exceptions, and errors. Checked Exceptions These are the ones the compiler won't let you ignore. If your code could potentially throw one, Java forces you to handle it — either by catching it or explicitly passing the responsibility along. A classic example is IOException , which shows up when something goes wrong during a file operation. Unchecked Exceptions These surface at runtime instead of compile time, and the compiler doesn...