Eclipse does not compile my Java code when I hit the Run button

Question

When I hit the run button, my Eclipse does not compile the code. It simply runs the code. Since it is not compiled, I do not see my changes being implemented.

Answer 1

That's a bug that we see with Eclipse.

In that case, you can first make sure that your code auto builds. Then, use Ctrl+S, after making changes. It will recompile the code.

Now you can run the code.

If that does not help,

Open problems view from window -> show view -> problems, if there's an error, fix it

eclipse will reject to compile if there are any problems in your project