Final answer:
Rethrows in computer programming are used to propagate exceptions from inner blocks to the calling method. They allow us to handle exceptions at a higher level and provide more specific information about the exception.
Step-by-step explanation:
In computer programming, rethrows are used to propagate exceptions that occur within a method from an inner block to the calling method. This can be useful when handling exceptions at a higher level or when we want to provide more specific information about the exception. The syntax for using rethrows in languages like Java is:
public void methodName() throws ExceptionType1, ExceptionType2, ... {
try {
// code that may throw exceptions
} catch (ExceptionType1 | ExceptionType2 | ... exception) {
// handle the exception
throw exception;
}
}