vscode - java build never completes

After doing a fresh git clone, and opening the vs code workspace, vs code, the build process indicates that it is done:

```
eeaabfde Updating Maven Dependencies [Done]
dbc32c48 Importing Gradle project(s) [Done]
9608b1a1 Clean workspace... [Done]
14edd062 Repository registry initialization [Done]
2ddae2f3 Building [Done]
18fef70f Building [Done]
```
but the Java: Java Build Status (sshj) progress indicator, never stops spinning. There is also a java executable that shows up in the process list.

Is there a specific process to follow in order to build sshj in vs code?