KeyValuePair

java.lang.Object
- cpsc331.collections.KeyValuePair<K,V>

```
public class KeyValuePair<K,V>
extends java.lang.Object
```
Implements a key-value pair of keys with type K and values with type V

KeyValuePair Invariant:
1. key has type K
2. value has type V

Constructor Summary

Constructors
Constructor Description

KeyValuePair()
Constructs a key-value pair such that the key and value are both null.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(KeyValuePair<K,V> pair)`	Implements a test for equality, based on key values.
`K`	`getKey()`	Reports the key of this KeyValuePair.
`V`	`getValue()`	Reports the value of this KeyValuePair.
`void`	`setKey(K k)`	Sets the key to be the input received.
`void`	`setValue(V v)`	Sets the value to be the input received.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - KeyValuePair
```
public KeyValuePair()
```
    Constructs a key-value pair such that the key and value are both null.
- Method Detail
  - getKey
```
public K getKey()
```
    Reports the key of this KeyValuePair.
    
    Returns:
    
    the key of this KeyValuePair
  - setKey
```
public void setKey(K k)
```
    Sets the key to be the input received.
    
    Parameters:
    
    k - the new key to be stored in this KeyValuePair
  - getValue
```
public V getValue()
```
    Reports the value of this KeyValuePair.
    
    Returns:
    
    the value of this KeyValuePair
  - setValue
```
public void setValue(V v)
```
    Sets the value to be the input received.
    
    Parameters:
    
    v - the new value to be stored in this KeyValuePair
  - equals
```
public boolean equals(KeyValuePair<K,V> pair)
```
    Implements a test for equality, based on key values.
    
    Parameters:
    
    pair - the key-value pair whose key is to be compared to this one’s
    
    Returns:
    
    true if the input KeyValuePair stores the same key as this one, and false otherwise.