Package com.pnfsoftware.jeb.util.base

Class Couple<A,B>

java.lang.Object
com.pnfsoftware.jeb.util.base.Couple<A,B>
Type Parameters:
A - the first element
B - the second element
@Ser public class Couple<A,B> extends Object
Handy class holding two typed elements. Null values are allowed.
See Also:

  • Constructor Details

    • Couple

      public Couple(A a, B b)
      Create a pair.
      Parameters:
      a - first element
      b - second element

  • Method Details

    • getFirst

      public A getFirst()
      Returns:
      the first element

    • setFirst

      public void setFirst(A a)
      Parameters:
      a - first element

    • getSecond

      public B getSecond()
      Returns:
      the second element

    • setSecond

      public void setSecond(B b)
      Parameters:
      b - second element

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object obj)
      Overrides:
      equals in class Object

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • getFirstElements

      public static <A, B> Collection<A> getFirstElements(Collection<Couple<A,B>> couples)
      Extract the first element of each pair.
      Type Parameters:
      A - type of first elements
      B - type of second elements
      Parameters:
      couples - input pairs
      Returns:
      first elements, in iteration order

    • getSecondElements

      public static <A, B> Collection<B> getSecondElements(Collection<Couple<A,B>> couples)
      Extract the second element of each pair.
      Type Parameters:
      A - type of first elements
      B - type of second elements
      Parameters:
      couples - input pairs
      Returns:
      second elements, in iteration order