Question: I have calling a SQLite database method in my Activity. I have given the following code `final DatabaseHandler db=new DatabaseHandler(Lists.this);`to create an instance of the database in my Activity.I have not given the above code inside OnCreate(). I want to make the context null on calling the OnDestroy method. I have done the following:

```
@Override
protected void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();
    System.gc();
    details.clear();
    DatabaseHandler db=new DatabaseHandler(null);

}

```

Is It the correct way to make the context null?

Answer: 
2D integer array

`Declaration`

```
int[,] array = new int[4, 2];

```

`Initialization`

```
int[,] array = new int[,] { { 1, 2 }, { 3, 4 }, { 5, 6 }, { 7, 8 } };

```

Complete explanation with example :<http://msdn.microsoft.com/en-us/library/2yd9wwz4.aspx>
Use MSDN for Micrsoft technologies, it is well documented <http://msdn.microsoft.com/en-us/library/2yd9wwz4.aspx> 

It ranked #1 in google search for me when writing: 2d integer array c#

This page might also provide useful information: [What are the differences between a multidimensional array and an array of arrays in C#?](https://stackoverflow.com/questions/597720/what-are-the-differences-between-a-multidimensional-array-and-an-array-of-arrays)