FULL PRODUCT VERSION :
java version "1.8.0_20"
Java(TM) SE Runtime Environment (build 1.8.0_20-b26)
Java HotSpot(TM) 64-Bit Server VM (build 25.20-b23, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux debian 3.14-2-amd64 #1 SMP Debian 3.14.15-2 (2014-08-09) x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
Consider the following Java class:

public class A {
  public static void main(String[] argv) {
    Object o = new Object () {
      public String toString() {
        return "abcd";
      }
    };
    System.out.println("obj is: "+ o.toString());

  }
}

You can compile it with:
$ javac A.java
in which case the major number of the class will be 51 or 51

Or with
$ javac -source 1.4 -target 1.4 A.java
in which case the major number of the class will be 48

Then consider the following class:
public class Check {
  public static void main(String[] args) {
    boolean b = A$1.class.isAnonymousClass();
    System.out.println("isAnonymous: "+ b);
  }
}

isAnonymousClass() returns true, as expected, when the major version of the A$1 class is 51 or 52.
However, it returns false when the major version of class A$1 is 48 which is wrong.
There may be some subtleties with major version numbers. If so, please redirect me to the text in the specifications describing this.





STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See Description.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Class.isAnonymousClass() should have returned true.
ACTUAL -
Class.isAnonymousClass() returned false on an anonymous class.

REPRODUCIBILITY :
This bug can be reproduced always.

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See description.
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