How do I set the main Java type in Eclipse?

How do I set the main Java type in Eclipse (latest)?

I have a main client, and then a bunch of unit tests that exer开发者_运维技巧cise various code paths and conditions. Normally I'd like to debug or execute the unit tests depending on the feature I'm developing. However, when the boss shows up, I'd like to quickly run my main driver class without hunting and pecking for the .java file, then hitting debug.

Is there an easy way to set/change the main type? How do folks normally handle running unit tests in Eclipse?

Click on the arrow in the run/debug icon and select Organize Favorites at the bottom and set favorites for anything you don't want to fumble around for later.

For unit tests, I just run them like anything else in Eclipse. I also include a test target in my Ant scripts.

For unit tests :

You can make test suite so to bundle them by feature. This way you just need to run the test suite related to your feature.

Having several launch configuration :

Just go Run Configuration... or Debug Configuration ... from Run menu and create the configuration you want. Next time you'll want to Run them go again to that menu select it and click Run/Debug;

To gain time you can go to Keys configuration and set at shortcut to "Run..." or "Debug..." submenu.

Right click on your test folder and "Run as ... -> JUnit test"?

From Run > Run Configuration... Create a new Run Configuration for the type of java application you have and the options let you specify the main class.

And these configurations will be available in the Run As button dropdown.