Try Out Daytona: Java

Things to try

Once you have this sample opened, you'll be able to work with it like you would locally.

Some things to try:

1. Edit:

   • Open src/main/java/com/mycompany/app/App.java.
   • Try adding some code and check out the language features.
   • Make a spelling mistake and notice it is detected. The Code Spell Checker extension was automatically installed because it is referenced in .devcontainer/devcontainer.json.
   • Also notice that the Extension Pack for Java is installed. The JDK is in the mcr.microsoft.com/devcontainers/java image and Dev Container settings and metadata are automatically picked up from image labels.

2. Terminal: Press Ctrl+Shift+` and type uname and other Linux commands from the terminal window.

3. Build, Run, and Debug:

   • Open src/main/java/com/mycompany/app/App.java.
   • Add a breakpoint.
   • Press F5 to launch the app in the container.
   • Once the breakpoint is hit, try hovering over variables, examining locals, and more.

4. Run a Test:

   • Open src/test/java/com/mycompany/app/AppTest.java.
   • Put a breakpoint in a test.
   • Click the Debug Test in the Code Lens above the function and watch it hit the breakpoint.

5. Install Node.js using a Dev Container Feature:

   • Press F1 and select the Dev Containers: Configure Container Features... or Codespaces: Configure Container Features... command.
   • Type "node" in the text box at the top.
   • Check the check box next to "Node.js (via nvm) and yarn" (published by devcontainers)
   • Click OK
   • Press F1 and select the Dev Containers: Rebuild Container or Codespaces: Rebuild Container command so the modifications are picked up.