whats wrong with this code? import java.io.*; import java.security.*; class demo

Question

whats wrong with this code?

import java.io.*;

import java.security.*;

class demo2

{
public static void main(String args[])
{
try
{
FileInputStream fis = new FileInputStream("demo1test");

ObjectInputStream ois = new ObjectInputStream(fis);

Object ob1 = ois.readObject();

String s1 = (String) ob1;

System.out.println(s1);

Object ob2 = ois.readObject();

byte[] array1= (byte[]) ob2;

MessageDigest md = MessageDigestgetInstance("SHA"); //i believe the error is on this line

md.update(s1.getBytes());

if(MessageDigest.isEqual(md.digest(), array1))

{ System.out.println("valid"); }

else

{ System.out.println("corrupted");

}

} catch(Exception e1)

{ System.out.println(""+e1);}

}

}

Explanation / Answer

import java.io.*;
import java.security.*;
class Main
{
public static void main(String args[])
{
try
{
FileInputStream fis = new FileInputStream("demo1test");
ObjectInputStream ois = new ObjectInputStream(fis);
Object ob1 = ois.readObject();
String s1 = (String) ob1;
System.out.println(s1);
Object ob2 = ois.readObject();
byte[] array1= (byte[]) ob2;
//You missed the . after MessageDigest
MessageDigest md = MessageDigest.getInstance("SHA"); //i believe the error is on this line
md.update(s1.getBytes());
if(MessageDigest.isEqual(md.digest(), array1))
{ System.out.println("valid"); }
else
{ System.out.println("corrupted");
}
} catch(Exception e1)
{ System.out.println(""+e1);}
}
}

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