When the following class is compiled using javac, class$java$math$BigDecimalField field is generated. According to the Field.isSynthetic () method, this field is not synthetic.

public class Synthetic {
  public static void main (String args []) {
    System.out.println (java.math.BigDecimal.class);
  }
}

The same problem occurs in case of fields of type this$0 that are generated for inner classes. They are not considered to be synthetic again.

I used javac and fastjavac in this case to compile a class. That's the reason why I fill this bug against JPDA, not javac. However, I am not sure if the issue is directly related to JPDA or not ...