JAVA program for binary search

Binary Search program in JAVA

import java.io.*;
class binary_search
{
    public static void main(String args[])throws IOException
    {
        int i;
        InputStreamReader x=new InputStreamReader(System.in);
        BufferedReader y=new BufferedReader(x);
        int a[]=new int[10];
        System.out.println("ENTER THE NUMBER TO BE SEARCHED");
        int n=Integer.parseInt(y.readLine());
        System.out.println("ENTER 10 NUMBERS FOR THE ARRAY");
        for(i=0;i<10;i++)
        {
            a[i]=Integer.parseInt(y.readLine());   
        }
        System.out.println("CONTENTS OF ARRAY ARE");
        for(i=0;i<10;i++)
        {
           System.out.println(a[i]);
        }
        System.out.println("NUMBER TO BE SEARCHED IS "+n);
        int p=-1,mid,l=0,u=9;
        while(l<=u)
        {
           mid=(l+u)/2;
           if(a[mid]==n)
           {
               p=mid;
               break;
           }
           else if(n> a[mid])
           {
               l=mid+1;
           }
           else if(n<a[mid])
           {
               u=mid-1;
           }
       }
       if(p==-1)
       {
           System.out.println("NUMBER DOES NOT EXIST IN THE ARRAY");
       }
       else
       {
           System.out.println("NUMBER EXISTS AT THE INDEX "+p);
       }
    }
}