Multiple Type Parameters

class Pair<KeyType, ValueType> {

  private KeyType key;
  private ValueType value;

  // Constructor
  public Pair(KeyType key, ValueType value) {
    this.key = key;
    this.value = value;
  }

  // Get the key for this pair
  public KeyType getKey() {
    return key;
  }

  // Get the value for this pair
  public ValueType getValue() {
    return value;
  }

  // Set the value for this pair
  public void setValue(ValueType value) {
    this.value = value;
  }

}

public class MulipleTypeParameters {

  public static void main(String[] a) {

    //create Pair object with Integer key and String value
    Pair<Integer, String> p = new Pair<Integer, String>(101, "Treehouse MultipleTypeParameters");

    System.out.println(p.getKey());
    System.out.println(p.getValue());
    p.setValue("Now is the time for all good men to learn Java");
    System.out.println(p.getValue());
  }

}