Determines whether the specified Object is equal to the current Object.

Allows an Object to attempt to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection.

Serves as a hash function for a particular type.

Gets the Type of the current instance.

Creates a shallow copy of the current Object.

Adds val to the Set associated with key in the Map. If key is not already in the map, a new Set will first be created.

Adds multiple vals to the Set associated with key in the Map. If key is not already in the map, a new Set will first be created.

Returns a String that represents the current Object.