Key.java

public class Key {
  //instance variables
   String cipher;
   String plain;



public Key(String cipher, String plain) {
 this.cipher = cipher;
 this.plain = plain;
}
 /**
 * getCipher - returns cipher
 * 
 * @return     cipher
 */

  public String getCipher() {
     return cipher;
 }
 /**
 * setCipher - updates cipher name
 * 
 * @param  newCipher   new value of cipher 
 */

  public void setCipher(String newCipher) {
      cipher = cipher;
  }
  /**
 * getPlain - returns plain
 * 
 * @return     plain
 */

  public String getPlain(){
      return plain;
  }
  /**
 * setPlain - updates plain name
 * 
 * @param  newPlain   new value of plain 
 */

  public void setPlain(String newPlain){
      plain = plain;
  }
  /**
 * toString - returns contents of object
 * 
 * @return    result
 */

  public String toString() {
      String result;
      result ="Ciphered text = " + cipher;
      result +="Plain text = " + plain;
      return result;
    }}