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1. Optionals vs. Nulls Optionals vs. Nulls

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   # Optionals vs. Nulls

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   Given a computer object get the USB version of the computer's soundcard, and if it's null return `UNKNOWN`

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   ## Java 7 traditional approach

2. Atom Build for Compile and Run Java ... Atom Build for Compile and Run Java code

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   {

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     "cmd": "javac *.java && java {FILE_ACTIVE_NAME_BASE}",

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     "name": "{FILE_ACTIVE}",

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     "args": [ ],

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     "sh": true,

3. Simple JavaEE 6 -> Testing Simple JavaEE 6 -> Testing

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   <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

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       xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

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       <modelVersion>4.0.0</modelVersion>

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       <groupId>com.sample.dojo</groupId>

4. JAX-RS Conditional Cache Headers -> ... JAX-RS Conditional Cache Headers -> https://devcenter.heroku.com/articles/jax-rs-http-caching

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   @Path("/books")

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   public class BookResource {

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       // less bandwidth

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       @GET