I'm having an issue finishing my Java code when I print line 119 :

System.out.println(self.encode("Happy Birthday")); 

the output should be: "PHXXF MQYBPKNJ"

but instead, I am getting nothing at all.

The same thing goes for when I try and print:

System.out.println(self.decode( "PHXXF MQYBPKNJ" )); 

The output should be: "Happy Birthday"

But I'm getting:

AAAAA AAAAAAAA.

Here is the full code below:

import com.sun.deploy.util.ArrayUtil; import java.util.Arrays; import java.util.stream.Stream; /**  * CLASS DESCRIPTION COMMENT  */ public class Prog2Cipher { // INSTANCE VARIABLES  char [ ] keyList; // Use standard alphabet as array  char [ ][ ] cipherTable = new char[26][26]; // Use keyList.length and set the 2d array to it.  char [] alphabet = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'}; // METHODS  /**  * METHOD DESCRIPTION COMMENT  * @param message;  * @return result;  */  String encode( String message ) { String result = ""; int ascii = -65; String[ ] mesArray = message.split(""); int i = 0; for ( String letterString: mesArray ) { if ( !" ".equals(letterString) ) { char letter = letterString.toUpperCase().charAt(0); int j = (int)keyList[ i ] + ascii; int k = (int)letter + ascii; result += Character.toString( cipherTable[ j ][ k ] ); } else { result += " "; } i++; i = i == keyList.length ? 0: i; } return result; } /**  * METHOD DESCRIPTION COMMENT  * @param message  * @return result  */  String decode( String message ) { String result = ""; message = message.toUpperCase(); String[] messageArray = message.split(""); int i = 0; int rows = 0; int colmns = 0; for(String str: messageArray){ if( !" ".equals(str) ){ rows = Arrays.binarySearch(alphabet, keyList[i]); for(int k = 0; k < cipherTable[0].length; k++ ){ if(cipherTable[rows][k] == str.charAt(0)) { colmns = k; } } result += Character.toString(alphabet[colmns]); }else{ result += " "; } i++; i = i == keyList.length ? 0: i; } return result; } // CONSTRUCTORS  /**  * CONSTRUCTOR DESCRIPTION COMMENT  * @param code  * @param key  */   public Prog2Cipher( char code, String key ) { int a; int startIndex = Arrays.binarySearch(alphabet, code); int b = startIndex; //Create the table with shift of b  //b will be equal to the i of keyList if code == keyList[i]  for(int i = b; i < alphabet.length; i++){ for(int j = 0; j < alphabet.length; j++){ cipherTable[i][j] = j + b >= alphabet.length ? alphabet[ j + b - 26 ]: alphabet[ j + b ]; b++; b = b == alphabet.length ? 0: b; System.out.println(cipherTable[i][j]); } } //removes any spaces from the key  char[ ] tArray = key.toCharArray(); int i = 0; for ( char c: tArray ) { if ( c == ' ' ) { continue; } tArray[ i ] = c; i++; } keyList = tArray; System.out.println(keyList); } // MAIN (TEST) Method  /**  * METHOD DESCRIPTION COMMENT  * @param args  */  public static void main( String[ ] args ) { // Testing only works if using VM argument -ea  Prog2Cipher self = new Prog2Cipher( 'H', "BABBAGE" ); assert "PHXXF MQYBPKNJ".equals( self.encode( "Happy Birthday" ) ); assert "HAPPY BIRTHDAY".equals( self.decode( "PHXXF MQYBPKNJ" ) ); System.out.println(self.encode("Happy Birthday")); System.out.println(self.decode( "PHXXF MQYBPKNJ" )); } } // END OF CLASS --------------------------------------------------------