To find the frequency of a word in a string

Question 64 : Write a program in Java to find the fifth highest number among a set of numbers taken as input from the user.

Java Program :

import java.io.*;
class high5
{
static int[] a  ;
  static void check()throws IOException
  {
      BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
      int i,k,c,s;
      System.out.print("\fEnter number of inputs : ");
      c=Integer.parseInt(br.readLine());
      if(c<5)
      check();
      a=new int[c];
      for(i=0;i<c;i++)
      {
          System.out.print("\nEnter a number : ");
          a[i]=Integer.parseInt(br.readLine());
    }
    for(i=0;i<c-2;i++)
    {
        for(k=0;k<c-2;k++)
        {
            if(a[k+1]>a[k])
            {
               s=a[k];
               a[k]=a[k+1];
               a[k+1]=s;
            }
        }
    }
    display();
}
static void display()
{
System.out.print("\n5th highest element is : "+a[4]);
}
}