RSA Algorithm | Encryption and decryption | Implementation in java

Write a program for a simple RSA algorithm to encrypt and decrypt the data.

This video describes how you should implement RSA algorithm using java.

[pilchu]

same letters have the same codes, it is insecure I guess can It be fixed somehow?

[salmakhojah]

hi, in line 49 when run the code it shows an Error how can I fixed { BigInteger val = new BigInteger }