Using pairs or 2 tuples in Java

Question

I want to have a tuple structure with the below Hashtable:

Hashtable<Long, Tuple<Set<Long>,Set<Long>>> table = ...

Can anyone tell me how to do it?

Answer 1

Java doesn’t have a separate tuple class. You can implement one like below: 

public class Tuple<X, Y> { 

  public final X x; 

  public final Y y; 

  public Tuple(X x, Y y) { 

    this.x = x; 

    this.y = y; 

  } 

} 

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