Constructor Summary

Method Summary

Constructor Details

• Subset

  protected Subset(String name)

  Constructs a newSubset instance.

  Parameters:

  name - The name of this subset

  Throws:

  NullPointerException - if name isnull

Method Details

• equals

  public final boolean equals(Object obj)

  Compares twoSubset objects for equality. This method returnstrue if and only ifthis and the argument refer to the same object; since this method isfinal, this guarantee holds for all subclasses.

  Overrides:

  equals in class Object

  Parameters:

  obj - the reference object with which to compare.

  Returns:

  true if this object is the same as the obj argument;false otherwise.

  See Also:

  • Object.hashCode()
  • HashMap

• hashCode

  public final int hashCode()

  Returns the standard hash code as defined by theObject.hashCode() method. This method isfinal in order to ensure that theequals andhashCode methods will be consistent in all subclasses.

  Overrides:

  hashCode in class Object

  Returns:

  a hash code value for this object

  See Also:

  • Object.equals(java.lang.Object)
  • System.identityHashCode(java.lang.Object)

• toString

  public final String toString()

  Returns the name of this subset.

  Overrides:

  toString in class Object

  Returns:

  a string representation of the object