Identifier.java

package edu.nodes;

/**
 * Created by Steven Kok on 12/03/2015.
 */
public class Identifier {

    private final String identifier;

    public Identifier(String identifier) {
        this.identifier = identifier;
    }

    public String getIdentifier() {
        return identifier;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Identifier that = (Identifier) o;

        return identifier.equals(that.identifier);

    }

    @Override
    public int hashCode() {
        return identifier.hashCode();
    }

    @Override
    public String toString() {
        return "Identifier{" +
                "identifier='" + identifier + '\'' +
                '}';
    }
}