Need method 1, 2 and 3 to complete in java using this polynomial class of linked list.

public class Polynomial {

// this is a nested static class, it defines a type // all the instance varaibles can be access directly inside Polynomial class even though they have // private modifier private static class TermNode{ private double coefficient; private int exponent; private TermNode next;

public TermNode(int exp, double coeff, TermNode nextTerm ) { coefficient= coeff; exponent = exp; next = nextTerm; } }

// instance variables of Polynomial // first is the term of the Polynomial with the highest degree private TermNode first;

public Polynomial() { first = new TermNode(0,0, null); }

public Polynomial(double a0) { first = new TermNode(0,a0,null); }

1. public Polynomial(Polynomial p) { }

2. public void add_to_coef(double amount, int exponent) {

}

3. public String toString() {

}