Product Version = NetBeans IDE 8.1 (Build 201510222201)
Operating System = Windows 7 version 6.1 running on amd64
Java; VM; Vendor = 1.8.0_92
Runtime = Java HotSpot(TM) 64-Bit Server VM 25.92-b14

Reproducibility: Happens every time

STEPS:
Please have a look at the following code:

    public static boolean nullSafeEquals(final Object obj1, final Object obj2) {
        return obj1 == null & obj2 == null || obj1 != null && obj1.equals(obj2);
    }

The check for null:
 obj1 != null
is necessary to prevent a NullPointerException, and the old version of Netbeans (7.4) demands that check.
But new version 8.0.1 and 8.1 claims that test as unnecessary, but it is necessary
ACTUAL:
    Unnecessary test for null - the expression is never null

EXPECTED:
  This check is necessary, as it was in  the 7.4 versio