I am writting an address book which store name and address.
I've written a Node class with Get and Set method of String key and String value
I've also written a Main class for the menu to promt user input and call method from Node clasas and insert to table class.
I am in the process of writting this table class. However, I am stuck at the the other method, can someone help?
Here is my code:
public class Table
{
//constructor
public Table (String name, String address)
{
this.name=key;
this.address=va lue;
}
private Node head=null;
//Insert a new entry. If an entry already exiss with the given key value, make no inserton but return false.
public boolean insert (String key, String value)
{
//insearting a new node at the beginning of the list
Node pointer=head;
while (pointer!=key.e quals(pointer.g etkey()))
{
pointer=pointer .getNext();
}
if (pointer=null)
{
Node n = new Node ();//create a node to hold string
n.setNext(head) ;//link to head of the list
head=n;
}
}
//Look up an existing entry with the given key and returns the associated value. If no entry is found null is returned
public String lookUp (String key)
{
Node pointer=head;
while ((pointer !=null && !key.equals(poi nter.getkey())) )
{
pointer=pointer .getNext();
}
//name was found or not found.
if (pointer!=null)
return pointer.getvalu e();
else
return null;
}
}
//Delete an existing entry with the given key. If no entry is found returns false.
public boolean delete (String key)
{
}
//update an existing entry. Update the old value with the new value associated with the given key
public boolean update (String key, String newValue)
{
}
//Set mark to the first entry of the table, return false when table is empty
public boolean markToStart()
{
}
//move mark to the next item in the table. If there is no next item, return false
public boolean advanceMark()
{
}
//returns the key stored in the item at the current mark
public String keyAtMark()
{
}
//returns the value in the item at the current mark
public String valueAtMark()
{
}
Thanks!
I've written a Node class with Get and Set method of String key and String value
I've also written a Main class for the menu to promt user input and call method from Node clasas and insert to table class.
I am in the process of writting this table class. However, I am stuck at the the other method, can someone help?
Here is my code:
public class Table
{
//constructor
public Table (String name, String address)
{
this.name=key;
this.address=va lue;
}
private Node head=null;
//Insert a new entry. If an entry already exiss with the given key value, make no inserton but return false.
public boolean insert (String key, String value)
{
//insearting a new node at the beginning of the list
Node pointer=head;
while (pointer!=key.e quals(pointer.g etkey()))
{
pointer=pointer .getNext();
}
if (pointer=null)
{
Node n = new Node ();//create a node to hold string
n.setNext(head) ;//link to head of the list
head=n;
}
}
//Look up an existing entry with the given key and returns the associated value. If no entry is found null is returned
public String lookUp (String key)
{
Node pointer=head;
while ((pointer !=null && !key.equals(poi nter.getkey())) )
{
pointer=pointer .getNext();
}
//name was found or not found.
if (pointer!=null)
return pointer.getvalu e();
else
return null;
}
}
//Delete an existing entry with the given key. If no entry is found returns false.
public boolean delete (String key)
{
}
//update an existing entry. Update the old value with the new value associated with the given key
public boolean update (String key, String newValue)
{
}
//Set mark to the first entry of the table, return false when table is empty
public boolean markToStart()
{
}
//move mark to the next item in the table. If there is no next item, return false
public boolean advanceMark()
{
}
//returns the key stored in the item at the current mark
public String keyAtMark()
{
}
//returns the value in the item at the current mark
public String valueAtMark()
{
}
Thanks!