Java Program to find max and min in a list of integers

//Program to find max and min in a list of integers
import java.util.*;
import java.io.*;
class maxmin
{
         public static void main(String args[])
            {
int []a=new int[25];
int i,n;
Scanner obj=new Scanner(System.in);
System.out.println("how many  integers");
n=obj.nextInt();
System.out.println("enter a list of integers");
for( i=0;i<n;i++)
         {
a[i]=obj.nextInt();
         }
int max,min;
max=min=a[0];
for( i=0;i<n;i++)
             {
if(max<a[i])
{ max=a[i]; }

else if(min>a[i])
{ min=a[i]; }
             }
System.out.println("maximum = "+max);

System.out.println("minimum = "+min);
          }
}