What's new in Java (Android N)

Lighting talk about what's new in Java in the Android N preview

Transcript

1. What’s new in Java N Eugenio Marletti @workingkills
2. Language: 7-ish ∞ diamond operator string switch multicatch K try-with-resources API: 6-ish K Throwable.addSuppressed() L ForkJoinPool JVM: 6 before N
3. after N “ we’re looking forward to tracking the Java language more closely while maintaining backward compatibility ”
4. lambdas method references after N Language: 8-ish ∞ N default & static methods in interfaces repeatable annotations API: 8-ish N streams functions optionals missing: date/time? (plz support lib!) JVM: 6 (still no invokedynamic)
5. lambda method reference anonymous class new View.OnClickListener() {
 @Override
 public void onClick(View view) {
 doSomething(view);
 }
 } view -> doSomething(view) this::doSomething
7. Alternatives Keep doing what you’re doing Retrolambda Kotlin
8. android { ... defaultConfig { ... jackOptions { enabled true } } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } } Getting started: developer.android.com/preview/j8-jack.html TL;DR 1. setup a project for the N preview 2. add this Gradle config:
9. Slides: bit.ly/new-java-n Eugenio Marletti @workingkills Questions? ktnxbye