Vfrdtyky

Using openjdk 10.0.2 2018-07-17

I got the following code. (It is a copy of this)

Using javasc to compile, I got this error. ListInter.java:80: error: incompatible types: Node is not a functional interface

// 1 class has all

class ListInter {



    // like global var

    static Node h1;

    static Node h2; 



    // static class in class 

    static class Node { 

        // val

        int val;

        // next 

        Node next; 



        // constructor 

        Node(int v) {

            // we don't call this, use straight 

            val = v;

            // we don't call this, use straight

            next = null; 

        } 

    } 



    Node getThatNode() {

        // static h1, count

        // no need this 

        int c1 = countNodeNum(h1); 

        // static h2, count

        int c2 = countNodeNum(h2);

        // diff 

        int diff; 



        // c1 list longer than c2 

        if (c1 > c2) {

            // get diff

            diff = c1 - c2; 

            return getJoinedNode(diff, h1, h2); 

        } else {

            // c2 longer than c1 

            diff = c2 - c1; 

            return getJoinedNode(diff, h2, h1); 

        } 

    } 



    Node getJoinedNode(int diff, Node h1, Node h2) {

        // consume

        int i;  

        // point

        Node curr1 = h1;

        // point

        Node curr2 = h2;        



        // consume all diff

        for (i = 0; i < diff; i++) {

            // to the end of list, in case 

            if (curr1 == null) { 

                return null; 

            } 

            curr1 = curr1.next; 

        }   



        while(curr1 != null && curr2 != null) {

            if (curr1.val == curr2.val) { 

                return curr1; 

            } 

            curr1 = curr1.next; 

            curr2 = curr2.next; 

        }



        return null;    

    }



    int countNodeNum(Node node) {

        // point

        Node curr;

        int num = 0;        



        curr = node;

        while(curr != null) {

            curr = curr->next;

            num++;

        }



        return num;

    }   



    // main

    public static void main(String args) { 

        // itself

        ListInter list = new ListInter();



        list.h1 = new Node(3); 

        list.h1.next = new Node(6); 

        list.h1.next.next = new Node(15); 

        list.h1.next.next.next = new Node(15); 

        list.h1.next.next.next.next = new Node(30); 



        list.h2 = new Node(10); 

        list.h2.next = new Node(15); 

        list.h2.next.next = new Node(30); 



        System.out.println("The node of intersection is " + list.getThatNode()); 





    }

}

change curr = curr->next to curr = curr.next (at line 80)