ObjectNode

java.lang.Object
- edu.colorado.nodes.ObjectNode

```
public class ObjectNode
extends java.lang.Object
```
A ObjectNode provides a node for a linked list with Object data in each node.

See Also:

Java Source Code for this class (www.cs.colorado.edu/~main/edu/colorado/nodes/ObjectNode.java) , Node, BooleanNode, CharNode, DoubleNode, FloatNode, IntNode, LongNode, ShortNode

Note:

Lists of nodes can be made of any length, limited only by the amount of free memory in the heap. But beyond Integer.MAX_VALUE (2,147,483,647), the answer from listLength is incorrect because of arithmetic overflow.

Constructor Summary

Constructors
Constructor and Description
`ObjectNode(java.lang.Object initialData, ObjectNode initialLink)` Initialize a node with a specified initial data and link to the next node.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addNodeAfter(java.lang.Object item)` Modification method to add a new node after this node.
`java.lang.Object`	`getData()` Accessor method to get the data from this node.
`ObjectNode`	`getLink()` Accessor method to get a reference to the next node after this node.
`static ObjectNode`	`listCopy(ObjectNode source)` Copy a list.
`static ObjectNode[]`	`listCopyWithTail(ObjectNode source)` Copy a list, returning both a head and tail reference for the copy.
`static int`	`listLength(ObjectNode head)` Compute the number of nodes in a linked list.
`static ObjectNode[]`	`listPart(ObjectNode start, ObjectNode end)` Copy part of a list, providing a head and tail reference for the new copy.
`static ObjectNode`	`listPosition(ObjectNode head, int position)` Find a node at a specified position in a linked list.
`static ObjectNode`	`listSearch(ObjectNode head, java.lang.Object target)` Search for a particular piece of data in a linked list.
`void`	`removeNodeAfter()` Modification method to remove the node after this node.
`void`	`setData(java.lang.Object newData)` Modification method to set the data in this node.
`void`	`setLink(ObjectNode newLink)` Modification method to set the link to the next node after this node.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ObjectNode
```
public ObjectNode(java.lang.Object initialData,
                  ObjectNode initialLink)
```
    Initialize a node with a specified initial data and link to the next node. Note that the initialLink may be the null reference, which indicates that the new node has nothing after it.
    
    Parameters:
    
    initialData - the initial data of this new node
    
    initialLink - a reference to the node after this new node--this reference may be null to indicate that there is no node after this new node.
    
    Postcondition:
    
    This node contains the specified data and link to the next node.
- Method Detail
  - addNodeAfter
```
public void addNodeAfter(java.lang.Object item)
```
    Modification method to add a new node after this node.
    
    Parameters:
    
    item - the data to place in the new node
    
    Postcondition:
    
    A new node has been created and placed after this node. The data for the new node is item. Any other nodes that used to be after this node are now after the new node.
    
    Throws:
    
    java.lang.OutOfMemoryError - Indicates that there is insufficient memory for a new ObjectNode.
  - getData
```
public java.lang.Object getData()
```
    Accessor method to get the data from this node.
    
    Returns:
    
    the data from this node
  - getLink
```
public ObjectNode getLink()
```
    Accessor method to get a reference to the next node after this node.
    
    Returns:
    
    a reference to the node after this node (or the null reference if there is nothing after this node)
  - listCopy
```
public static ObjectNode listCopy(ObjectNode source)
```
    Copy a list.
    
    Parameters:
    
    source - the head of a linked list that will be copied (which may be an empty list in where source is null)
    
    Returns:
    
    The method has made a copy of the linked list starting at source. The return value is the head reference for the copy.
    
    Throws:
    
    java.lang.OutOfMemoryError - Indicates that there is insufficient memory for the new list.
  - listCopyWithTail
```
public static ObjectNode[] listCopyWithTail(ObjectNode source)
```
    Copy a list, returning both a head and tail reference for the copy.
    
    Parameters:
    
    source - the head of a linked list that will be copied (which may be an empty list in where source is null)
    
    Returns:
    
    The method has made a copy of the linked list starting at source. The return value is an array where the [0] element is a head reference for the copy and the [1] element is a tail reference for the copy.
    
    Throws:
    
    java.lang.OutOfMemoryError - Indicates that there is insufficient memory for the new list.
  - listLength
```
public static int listLength(ObjectNode head)
```
    Compute the number of nodes in a linked list.
    
    Parameters:
    
    head - the head reference for a linked list (which may be an empty list with a null head)
    
    Returns:
    
    the number of nodes in the list with the given head
    
    Note:
    
    A wrong answer occurs for lists longer than Int.MAX_VALUE.
  - listPart
```
public static ObjectNode[] listPart(ObjectNode start,
                                    ObjectNode end)
```
    Copy part of a list, providing a head and tail reference for the new copy.
    
    Parameters:
    
    start - first node to copy
    
    end - final node to copy
    
    Precondition:
    
    start and end are non-null references to nodes on the same linked list, with the start node at or before the end node.
    
    Returns:
    
    The method has made a copy of the part of a linked list, from the specified start node to the specified end node. The return value is an array where the [0] component is a head reference for the copy and the [1] component is a tail reference for the copy.
    
    Throws:
    
    java.lang.IllegalArgumentException - Indicates that start and end are not references to nodes on the same list.
    
    java.lang.NullPointerException - Indicates that start is null.
    
    java.lang.OutOfMemoryError - Indicates that there is insufficient memory for the new list.
  - listPosition
```
public static ObjectNode listPosition(ObjectNode head,
                                      int position)
```
    Find a node at a specified position in a linked list.
    
    Parameters:
    
    head - the head reference for a linked list (which may be an empty list in which case the head is null)
    
    position - a node number
    
    Precondition:
    
    position > 0.
    
    Returns:
    
    The return value is a reference to the node at the specified position in the list. (The head node is position 1, the next node is position 2, and so on.) If there is no such position (because the list is too short), then the null reference is returned.
    
    Throws:
    
    java.lang.IllegalArgumentException - Indicates that position is not positive.
  - listSearch
```
public static ObjectNode listSearch(ObjectNode head,
                                    java.lang.Object target)
```
    Search for a particular piece of data in a linked list.
    
    Parameters:
    
    head - the head reference for a linked list (which may be an empty list in which case the head is null)
    
    target - a piece of data to search for
    
    Returns:
    
    The return value is a reference to the first node that contains the specified target. If there is no such node, the null reference is returned.
  - removeNodeAfter
```
public void removeNodeAfter()
```
    Modification method to remove the node after this node.
    
    Precondition:
    
    This node must not be the tail node of the list.
    
    Postcondition:
    
    The node after this node has been removed from the linked list. If there were further nodes after that one, they are still present on the list.
    
    Throws:
    
    java.lang.NullPointerException - Indicates that this was the tail node of the list, so there is nothing after it to remove.
  - setData
```
public void setData(java.lang.Object newData)
```
    Modification method to set the data in this node.
    
    Parameters:
    
    newData - the new data to place in this node
    
    Postcondition:
    
    The data of this node has been set to newData.
  - setLink
```
public void setLink(ObjectNode newLink)
```
    Modification method to set the link to the next node after this node.
    
    Parameters:
    
    newLink - a reference to the node that should appear after this node in the linked list (or the null reference if there is no node after this node)
    
    Postcondition:
    
    The link to the node after this node has been set to newLink. Any other node (that used to be in this link) is no longer connected to this node.

Class ObjectNode

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ObjectNode

Method Detail

addNodeAfter

getData

getLink

listCopy

listCopyWithTail

listLength

listPart

listPosition

listSearch

removeNodeAfter

setData

setLink