In this tutorial we will learn how to create md5 hash in java. To create md5 hash in java we need follow below steps.

• Import java.math.BigInteger.
• Import java.security.MessageDigest.
• Import java.security.NoSuchAlgorithmException.
• Create MessageDigest object for MD5
• Update input string in message digest
• Converts message digest value in base16 (hex)
• If md5 generated successfully return md5 string else show an exception.

Below is the example class for java to generate md5 hash

package yourpackage;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
 *
 *
 */
public class Encrypt {
    public static String md5(String input) {
        String md5 = null;
        if (null == input) {
            return null;
        }
        try {
            MessageDigest digest = MessageDigest.getInstance("MD5");
            digest.update(input.getBytes(), 0, input.length());
            md5 = new BigInteger(1, digest.digest()).toString(16);

        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return md5;
    }
}

Tags : Java, MySQL,