Java classifies exceptions into a few types: checked exceptions, unchecked exceptions, and errors, which must be handled by the JVM. I’ll have more below about how the Java virtual machine ...

Thus, making an exception checked forces the programmer to pay heed to the possibility of it being thrown. An example of a checked exception is java.io.IOException.

A good example would be the FileNotFoundException. This does exactly what it says on the tin: this exception is “thrown” when Java looks for a particular file and can’t find it.