delema.java

labs to practise link list and double link list

package myList;

public class DElemA
{
	String author;
	DElemA next;		// and reference to next element
	DElemA previous;
	Elem ref;
	DElemA() 		// constructor
	{
		author = new String();
		next = null;
		previous = null;
	}

	public static DElemA makeDElemA(Elem e)
	{
		DElemA h;
		String i = new String();
		i = e.author;
		h = new DElemA();
		h.setAuthor(i);
		return h;
	}

	public void setAuthor(String t){author = t;}
	public void setNext(DElemA n){next = n;}
	public void setPrevous(DElemA n){previous = n;}
	public String getAuthor(){return author;}
	public DElemA getNext(){return next;}
	public DElemA getPrevous(){return previous;}
	//public String toString(){return data + " ";}
}