orderedpair.java

设存在集合A

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package binaryrelations;

/**
 *
 * @有序对
 */
public class OrderedPair {
    public Elements FirstElement=new Elements();
    public Elements SecondElement=new Elements();
    public OrderedPair (Elements FirstElement,Elements SecondElement){
        this.FirstElement.name= FirstElement.name;
        this.FirstElement.data= FirstElement.data;
        this.SecondElement.name = SecondElement.name;
        this.SecondElement.data = SecondElement.data;
    }
    public boolean equals(OrderedPair ordered){
    return this.FirstElement.equals(ordered.FirstElement)&&this.SecondElement.equals(ordered.SecondElement);
    }
}