Eclipse error syntax checking

How to turn ON automatic error checking inside Java code within the Eclipse IDE? I have already chec开发者_JS百科ked the "Build Automatically", but it still does not check my error when I purposely throw away my semicolons. Need help.

Do you configure your folder to be the source folder?It should be included in the java build path (The project properties--> java build path --> source ) ? Eclipse will only checks the java syntax error automatically for the folders that are included in the java build path.

You shouldn't need to turn on anything, it should work out-of-the-box. The only case I can think of when it might not work are when editing java files outside any project. Are you sure that the java files you're editing are located in a source folder of an open project?