Chapter 20, Problem 1FTE

Explanation of Solution

Purpose of the given code:

The given code is used to display the second element in a list “myList”. This list contains three elements.

Given code:

/* Set a reference "ref" to the first node in the list "myList" */

Node ref = myList; //Line 1

/* Increment the value of "ref" */

ref++;//Line 2

/* Display the element in the "ref" */

System.out.print(ref.value); //Line 3

Error in the given code:

• The error is present in “line 2” of given code. If user needs move on to the next node, then they should set a reference to the successor of the existing node. That is assign “ref” to “ref.next”.
• Therefore, user should replace “ref = ref.next” in the place of “ref++”...