NEW is internal proprietary API

Question

During build of our project we get a rather unexplained warning:

    [javac] (...)\SessionKeeper.java:39: warning: NEW is internal proprietary API and may be removed in a future release
    [javac]     private static final int timeOfInactivity = 1000 * 60 * 9; // allowed time of inactivity
    [javac]                                ^

Additional info:

• Apache Ant(TM) version 1.8.4 compiled on May 22 2012
• Java(TM) SE Runtime Environment (build 1.7.0_25-b16)

Can anyone explain why the compiler makes this warning, and what I should change to avoid it?

[Edit] Added nearby code

private static final String CLASS_NAME = SessionKeeper.class.getName();

    private static final int logoutDelaySeconds = 1000 * 60; // logout after 1 min. from the point when dialog was shown to the user
    private static final int timeOfInactivity = 1000 * 60 * 9; // allowed time of inactivity

    private boolean isSchedulerStarted = false; // indicates if SessionKeeper was started or not

    private static SessionKeeper instance;

[edit] Since quite a few requested the source I attached it here (expires in 24h): http://pastebin.com/t2M5mgd0

[edit] What have been tried so far:

• Inlining the constant -> error goes to the line above
• Reactoring SessionKeeper to not extend any class -> same error
• Removing CLASS_NAME and logging statements

Answer 1

Solution found I removed all all imports in the file, and replaced everything with stubs.

That made java report the error in another file.

The other file had a bad and unused import (import com.sun.org.apache.bcel.internal.generic.NEW).

So I'll recommend anyone getting this error to search your entire workspace for NEW