FULL PRODUCT VERSION :
jdk1.6.0_14

A DESCRIPTION OF THE PROBLEM :
com.sun.org.apache.bcel.internal.Constants.ArrayType implments equals() and hashcode() but NOT hashCode().

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
look at the code.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
hashcode() should be hashCode()

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
  /** @return a hash code value for the object.
   */
  public int hashcode() { return basic_type.hashCode() ^ dimensions; }

  /** @return true if both type objects refer to the same array type.
   */
  public boolean equals(Object type) {
    if(type instanceof ArrayType) {
      ArrayType array = (ArrayType)type;
      return (array.dimensions == dimensions) && array.basic_type.equals(basic_type);
    } else
      return false;
  }
---------- END SOURCE ----------