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POSingly linked list - Cannot make a static reference to the non-static type
 

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  1. POSingly linked list - Cannot make a static reference to the non-static type
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    <p>I am working a singly linked list to learn Java.</p> <p>I have a working linked list but it binds to integer type, now I am trying to implement a generic typed linked list by changing all the integer declaration to generic type E.</p> <p>The compiler keeps complaining that it "Cannot make a static reference to the non-static type E". The code still runs. Does anybody know how to fix this error " ?</p> <p>I think it has something to do with whether the generic type E is static like integer or double or if it is a reference type like String or other classes.</p> <pre><code>public class TestingLinkedList&lt;E&gt; { private E value; private TestingLinkedList&lt;E&gt; next; /* * Default Constructor * * @param value an absolute E value for the current Node * * @param next an absolute RecursiveLinkedList value for the current Node */ public TestingLinkedList(E value, TestingLinkedList next) { this.value = value; this.next = next; } /* * Constructor Empty, when user supplies an empty for the constructor uses * value = - 1 and next = null as input parameters * * @param value an absolute int value for the current Node * @param next an absolute RecursiveLinkedList value for the current Node */ public static final TestingLinkedList EMPTY = new TestingLinkedList(null,null) { public TestingLinkedList remove(E n) { return this; }; public String toString() { return ""; }; }; /* * if the current node is null return false * else if current value is the chosen value * then return true. Otherwise call the contains * method of the next item in queue * * @param value an absolute int value for the current Node * @param RecursiveLinkedList object of the remove item * */ public TestingLinkedList remove(E n) { if (value == n) { return next; } // Call the remove method of the next Node if the selected Node is not // the current node then construct and return the next method return new TestingLinkedList(value, next.remove(n)); } /* * if the current node is null return false * else if current value is the chosen value * then return true. Otherwise call the contains * method of the next item in queue * * @param value an absolute int value for the current Node * @param boolean * */ public boolean contains(E n) { if (next == null) { return false; }else if (value == n) { return true; } else { return next.contains(n); } } public String toString() { return value + "," + next.toString(); } /* * * Testing Methods for RecursiveLinkedList * * */ public static void main(String[] args) { TestingLinkedList l = new TestingLinkedList(1, new TestingLinkedList(2, new TestingLinkedList(2, new TestingLinkedList(3, new TestingLinkedList(4, EMPTY))))); System.out.println(" Test to String Method : " + l.toString()); System.out.println(" Test remove method " + l.remove(1).toString()); System.out.println(" Test contains method " + String.valueOf(l.contains(4))); } </code></pre> <p>}</p>
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    1. USI82Much
    1. USYevgraf Andreyevich Zhivago
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    1. COWhere is your error?
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      1. USZyerah
    2. COThe block `if (value == n) {...}` is suspicious too. That should probably be an `Object.equals()` call.
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      1. POSingly linked list - Cannot make a static reference to the non-static type
      1. USEric Jablow
 

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