FULL PRODUCT VERSION :
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Server VM (build 1.5.0_06-b05, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
SunOS Generic_118822-01 sun4u sparc SUNW,Sun-Fire-880

A DESCRIPTION OF THE PROBLEM :
Comiling the code below produces an error at the statement "value += 1;",
although no error with the equivalent statement "value = value + 1;"

Value.java:8: operator + cannot be applied to java.lang.Object,int
value += 1;
              ^



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
  To compile the source code below with javac.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
It should be compiled without an error.
ACTUAL -
Value.java:8: operator + cannot be applied to java.lang.Object,int
value += 1;
              ^

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Value.java:8: operator + cannot be applied to java.lang.Object,int
value += 1;
              ^

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class Value<T> {
    public T value;
}

class IntegerValue extends Value<Integer> {
    void increment() {
value = value + 1;
value += 1;
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Do not use += operator.