I have an array of 10,000 elements and i want to loop through and find a particular number say '6573'. 

Example 

```
 for(int i=0;i<=user.length;i++)
    {
        if(user[i]=="6573")
            System.out.println("Found it!!!");
    }

```

Could you please suggest a way to improve the performance of the code.

Thanks