Class template error

[Bingo90]

I got an array class, but I'm getting this error:

Error 1 error C2953: 'Array2D' : class template has already been defined

Here's the code:

#include "Tools.h"
template <typename T>
class Array2D
{
	T** arr;
	int xSize;
	int ySize;

public:
	Array2D(int xSize, int ySize)
	{
		arr = Tools::allocateDynamicArray<T>(xSize, ySize);
		this->xSize = xSize;
		this->ySize = ySize;

		for(int i = 0; i<xSize; i++)
		{
			for(int j = 0; j<ySize; j++)
			{
				arr[i][j] = null;
			}
		}
	}
	int getXSize()
	{
		return xSize;
	}
	int getYSize()
	{
		return ySize;
	}
	T get(int i, int j)
	{
		return arr[i][j];
	}
	void set(int i, int j, T value)
	{
		arr[i][j] = value;
	}
	Array2D(void);
	~Array2D(void);
};

[Little Bobby Tables]

can we see Tools.h? other than that, the only thing i can think of is the multiple constructors which shouldnt be an issue

[Bingo90]

Tools.h:

#pragma once
#include <vector>

class Tools
{
public:
	template <typename T>
	static T **allocateDynamicArray( int nRows, int nCols)
	{
		T **dynamicArray;

		dynamicArray = new T*[nRows];
		for( int i = 0 ; i < nRows ; i++ )
			dynamicArray[i] = new T [nCols];

		return dynamicArray;
	}
	static long generateRandomLong();
	static bool isPrime(int num);
	static int randomNumberRange(int min, int max);
};

[elszon]

each header should have header guard:

file Tools.h:

#ifndef _TOOLS_H
#define _TOOLS_H

#include <vector>

class Tools
{
public:
	template <typename T>
	static T **allocateDynamicArray( int nRows, int nCols)
	{
		T **dynamicArray;

		dynamicArray = new T*[nRows];
		for( int i = 0 ; i < nRows ; i++ )
			dynamicArray[i] = new T [nCols];

		return dynamicArray;
	}
	static long generateRandomLong();
	static bool isPrime(int num);
	static int randomNumberRange(int min, int max);
};

#endif /* _TOOLS_H */