How can I throw CHECKED exceptions from inside Java 8 streams?

Question

How can I throw CHECKED exceptions from inside Java 8 streams/lambdas?

In other words, I want to make code like this compile:

public List

        

Answer 1

This answer is similar to 17 but avoiding wrapper exception definition:

List test = new ArrayList();
        try {
            test.forEach(obj -> {

                //let say some functionality throws an exception
                try {
                    throw new IOException("test");
                }
                catch(Exception e) {
                    throw new RuntimeException(e);
                }
            });
        }
        catch (RuntimeException re) {
            if(re.getCause() instanceof IOException) {
                //do your logic for catching checked
            }
            else 
                throw re; // it might be that there is real runtime exception
        }