### VBB App

The VBB App mode is selected using a custom editor. 

![](vbb-app.png) 

* [Sleep](#jvmsleep) : *Keep the JVM processor in sleep mode.*
* [Java Source](#javasource) : *Read Java source from local project folder*
* [Mixed Reality](#mixedreality) : *Mixes the IO with the real world.*
* [VSCode](#vscode): *Connect debugger to VSCode*

#### JVMSleep

![](JVM-SLEEP.png) 

The JVM is put in sleep mode. The JVM becomes disabled and does not participate the runtime.

<a name="javasource"></a> 
#### Java Source
![](JVM-JAVA.png) 

In Java Source mode the project folder ( Requires a project mode ) is scanned for java source files which are composed into a Jav application, converted to java bytecode and executed in the JVM. The java source is typically edited using the Java Editor Design Sheet.

<a name="mixedreality"></a> 
#### Mixed Reality

![](JVM-MIX.png) 

In Mixed Reality mode an *Edge* firmware is downloaded into the real device. The *Edge* firmware exchanges IO with real and virtual IO as defined by the Virtual Breadboard design. The result is an In-Circuit emulator of the Virtual Breadboard hardware.

#### VSCode
 
![](JVM-VSCODE.png) 

In VS Code mode the Virtual VBBMicro starts a service that listens for connections requests from the VBB-RT Plugin for VSCode available in the VSCode marketplace. This allows projects to be edited in VSCode and executed and debugged in VBB.

![](VSCode-VbbRT.png) 

The \<ConnectionId> is used in the launch.json "connectionId" property.

```json
{
    "version": "0.1.0",
    "configurations": [
        {
            "name": "VbbRT-Debug",
            "type": "vbbrt",
            "request": "launch",
            "program": "${workspaceRoot}/JavaApp.java",
            "stopOnEntry": true,
            "connectionId": "<connectionId>"
        } 
    ]
}
```

> RoadMap : Create Full tutorial.