import java.io.*;
import java.util.zip.CheckedInputStream;
import java.util.zip.CRC32;

public class ChecksumCRC32 {
	public void checkSum(String file){
		try{
			FileInputStream fis = null;
			CheckedInputStream cis = null;
			CRC32 crc = null;
			long sizeOfFile = 0;
			try{
				fis = new FileInputStream(file);  
				crc = new CRC32();
				cis = new CheckedInputStream(fis, crc);
				sizeOfFile = new File(file).length();
 			}
			catch (Exception e){
				System.out.println("File  Not found ");
				System.exit(1);
			}
			byte[] buffer = new byte[100];
			while(cis.read(buffer)>=0){
				long checksum = cis.getChecksum().getValue();
				System.out.println(checksum + " " + sizeOfFile + " " + file);
			}
		}
		catch(IOException e){
			System.out.println("the exception has been thrown" + e);
			System.exit(1);
		}
	}
	public static void main(String[] args) {
		ChecksumCRC32 crc = new ChecksumCRC32();
		if(args.length!= 1){
			System.out.println("Please enter the valid file name : " );
		}
		else{
			crc.checkSum(args[0]);
		}
	}
}