Eclipse cannot automatically compile Xx.java to Xx.classs

Problem Description: Eclipse cannot automatically compile Xx.java to Xx.classs

Reason: Write code this afternoon, because the need to introduce JSTL package, introduced after the introduction of the original project has been introduced, and then I deleted the package, forget to delete the Java build path in the jar package. But has not been an error. I feel depressed and miserable.

Workaround: Remove the wrong jar package from the Java build path.

Summary: Experience is not enough, slowly accumulate it.

Eclipse cannot automatically compile Xx.java to Xx.classs