FunWrap

FunWrap is a Java library that allows you to throw checked exceptions in places you're normally not allowed to.

boolean isValid() throws Exception;
Bar toBar() throws Exception;
void printBaz() throws Exception;

import static io.github.snarks.funwrap.FunWrap.*;

stream.filter(predicate(Foo::isValid))
      .map(function(Foo::toBar))
      .forEach(consumer(Bar::printBaz));

What? How is that even possible?!

FunWrap isn't really doing anything particularly fancy. It just abuses takes advantage of Kotlin's ability to do away with checked exceptions entirely.

This is possible because checked exceptions is purely a Java compiler thing. The JVM doesn't really care about checked exceptions at all when it comes to invoking methods.

Caveat

You still need to use common sense when using this library. Take caution where you're throwing your exceptions - it might not be supposed to be thrown there.

Documentation

The Javadocs are in here.

Adding FunWrap to your Project

You can add this project as a dependency via JitPack.

repositories {
    jcenter()
    maven { url "https://jitpack.io" }
}
dependencies {
     compile 'io.github.snarks:FunWrap:1.2.0'
}

(com.github.snarks will also work)