To throw an exception using throws clause, we have defined a file which is not existed. Here is the code:

import java.io.*;
class  ReadData
{
    public static void main(String[] args) throws Exception
    {   
        BufferedReader br=new BufferedReader(new FileReader("dd.txt"));
        String st;
        while((st=br.readLine())!=null){
            System.out.println(st);
        }
    }
}