In Eclipse, the changes of my source code have no effect

Question

I have a strange problem in Eclipse Helios. When I alter my source code, my changes have no effect. Even if I alter the code in a way that looks uncompilable, it still can b

Answer 1

I was having the same problem while running a Maven project in Spring Tool Suit (which is based on Eclipse). I needed to clean and build the maven project every time to make the STS detect the new changes (what is obviously a slow and inefficient process).

So my solution was:

Pressing Alt+F5 and check Force update of Snapshots/Releases

Answer 2

In the Project menu, verify that Build Automatically is checked.

Answer 3

This is on Eclipse (Kepler). Simple "Hello World" in Java where changes to text in println where not reflected in console when doing a run or relaunch (Build automatically was checked). When doing a second relaunch ( or saving the .java file 1st) it always showed the changes to the println.

Kristian