Creating a TreeMap within a TreeMap.

[millz]

I am trying to create a tree map within a TreeMap.
Any help would be great.
goes a bit like this:

[code=java]
public class ChessImpl implements CHESS
{
private Map<String, Integer> name;
private int membernumber;
private Map<String, Map<Integer, Holding>> stock;
private Map<Integer, Holding> intSearch;
private Holding holder;


public ChessImpl()
{
name = new TreeMap<String, Integer>();
membernumber = 1;
stock = new TreeMap<String, Map<Integer, Holding>>();
}
[/code]

With the stock map do I need to create another map before i insert it?
Main problem is when i use the put method it wont accept it?

[code=java]
public void issue(String stockCl, String client, int nshares)
{
if(name.contain sKey(client) && (nshares > 100))
{
Holding holder = new Holding(stockCl , client, nshares);
int memNum = name.get(client );
stock.put(stock Cl, (memNum, holder)) //THIS IS WHERE IM HAVING THE MAJOR PROBLEM
}
else
{
System.out.prin tln("Client name has not been created or the amount of shares is less than 100");
}
[/code]

I keep getting a error message. this is the holding class just for refrence.

[code=java]
public class Holding
{

private String stock;
private String client;
private int shares;
public Holding(String stock, String client, int shares)
{
this.stock = stock;
this.client = client;
this.shares = shares;
}
[/code]

[JosAH]

I keep getting a error message.

What is the exact error message? Is it a compilation error or a runtime error?

kind regards,

Jos

[Nepomuk]

I am trying to create a tree map within a TreeMap.
Any help would be great.
goes a bit like this:

[code=java]
public class ChessImpl implements CHESS
{
private Map<String, Integer> name;
private int membernumber;
private Map<String, Map<Integer, Holding>> stock;
private Map<Integer, Holding> intSearch;
private Holding holder;


public ChessImpl()
{
name = new TreeMap<String, Integer>();
membernumber = 1;
stock = new TreeMap<String, Map<Integer, Holding>>();
}
[/code]

With the stock map do I need to create another map before i insert it?
Main problem is when i use the put method it wont accept it?

[code=java]
public void issue(String stockCl, String client, int nshares)
{
if(name.contain sKey(client) && (nshares > 100))
{
Holding holder = new Holding(stockCl , client, nshares);
int memNum = name.get(client );
stock.put(stock Cl, (memNum, holder)) //THIS IS WHERE IM HAVING THE MAJOR PROBLEM
}
else
{
System.out.prin tln("Client name has not been created or the amount of shares is less than 100");
}
[/code]

I keep getting a error message. this is the holding class just for refrence.

[code=java]
public class Holding
{

private String stock;
private String client;
private int shares;
public Holding(String stock, String client, int shares)
{
this.stock = stock;
this.client = client;
this.shares = shares;
}
[/code]

Quick answer: Yes, you must create an Object, before using it. Instead of
[CODE=java]
stock.put(stock Cl, (memNum, holder));
[/CODE]you want something like
[CODE=java]
TreeMap tmpMap = new TreeMap();
tmpMap.put(memN um, holder);
stock.put(stock Cl, tmpMap);
[/CODE]That should do the job.

Greetings,
Nepomuk

[millz]

Thanks for the suggestions ill try that code 2nite.