Java 8 Lambda function that throws exception?

Question

I know how to create a reference to a method that has a String parameter and returns an int, it\'s:

Function         


        

Answer 1

If you don't mind using a third party library, with cyclops-react, a library I contribute to, you can use the FluentFunctions API to write

 Function standardFn = FluentFunctions.ofChecked(this::myMethod);

ofChecked takes a jOOλ CheckedFunction and returns the reference softened back to a standard (unchecked) JDK java.util.function.Function.

Alternatively you can keep working with the captured function via the FluentFunctions api!

For example to execute your method, retrying it up to 5 times and logging it's status you can write

  FluentFunctions.ofChecked(this::myMethod)
                 .log(s->log.debug(s),e->log.error(e,e.getMessage())
                 .try(5,1000)
                 .apply("my param");