RSA implementation using java

Question

I am implementing RSA in java I have encountered a code which is given below it is showing plaintext in numeric form after decrypting the plaintext, but I want it in simple engl

Answer 1

Instead of this (which only reads the first character):

int plaintext;
plaintext = System.in.read();
bplaintext = BigInteger.valueOf((long) plaintext);

Use this (to read the string):

byte[] plaintext;
plaintext = new Scanner(System.in).nextLine().getBytes();
bplaintext = new BigInteger(plaintext);

Then add this to the end (to convert the decrypted BigInteger back to a string)

System.out.println("Original String: " + new String(bplaintext.toByteArray()));