public class Node implements Comparable { private String keyword; private List references; public Node(String keyword, int mode){ } public String getKeyword(){ return this.keyword; } public List getReferences(){ return this.references; } public void insertReference(String website){ this.references.add(website); } public int compareTo(Object o){ return -1; } // TODO: similar to compareTo except in boolean format and is only concerned if the other Node has the same keyword or not public boolean equals (Object o) { if (o instanceof Node) { Node other = (Node) o; return this.keyword.equals(other.keyword); } else return false; } public String toString(){ return this.keyword + " " + this.references; } }