Added in AlphaNumeric Encryption "AlphaNum"

I added in the AlphaNumeric encryption which is inthe Encrypt.java class. Hopefully I will be able to get an Java GUI for at least the ceaser cypher released soon. This update is for the first initial release. I know I jumped through a lot of numbers but considering where this program is at now, it feels like an full release for an console program.

Author: davidhaw

Encrypt.java

@@ -0,0 +1,71 @@
+package base;
+
+import java.util.Arrays;
+
+public class Encrypt {
+
+	public void encryptM (String message, int num) {
+		
+		String t = "";
+		for (int i = 0; i < message.length(); ++i) {
+		    char ch = message.charAt(i);
+		    if (!t.isEmpty()) {
+		        t += " ";
+		    }
+		    int n = (int)ch - (int)'a' + 1;
+		    t += String.valueOf(n);
+		}
+		System.out.println(t);
+		
+		// The string you want to be an integer array.
+		String[] integerStrings = t.split(" "); 
+		// Splits each spaced integer into a String array.
+		int[] integers = new int[integerStrings.length]; 
+		// Creates the integer array.
+		for (int i = 0; i < integers.length; i++){
+		    integers[i] = Integer.parseInt(integerStrings[i]); 
+		//Parses the integer for each string.
+		}
+		
+
+		for (int i = 0; i < integers.length; i++)
+		    integers[i] = integers[i] * num;  
+		
+		
+		System.out.println("Encrypted Message: " + Arrays.toString(integers));
+		
+		
+	}
+	
+	public void decryptM (int integers[], int num) {
+		
+		
+		for (int i = 0; i < integers.length; i++)
+		    integers[i] = integers[i] / num;  
+		
+        String[] decoded = new String[integers.length];
+
+		for (int i = 0; i < integers.length; i++) {
+			
+			decoded[i] = String.valueOf(Character.toChars(integers[i] + 64));
+			
+		}
+			
+		String decodedE = String.join("", decoded);
+
+	    System.out.println("Decoded: " + decodedE);
+	}
+	
+	public int parseD (String i) throws NumberFormatException {
+		int num = 0;
+		try {
+    		num = Integer.parseInt(i);
+		} catch (NumberFormatException e1) {
+			System.out.println("Please enter a number");
+		}
+		return num;
+				
+		
+	}
+	
+}

Main.java

@@ -1,11 +1,13 @@
 package base;
 import java.util.Scanner;
-import java.util.Random;
 
 public class Main {
 
 
     public static void main(String[] args) {
+    	
+    	//Start the object e for AlphaNum encryptions
+		Encrypt e = new Encrypt();
 
 		// create a new scanner with the specified String Object
         Scanner scanner = new Scanner(System.in);
@@ -24,8 +26,8 @@ public static void main(String[] args) {
         Scanner scanner1 = new Scanner(System.in);
 
     	//Check how the user wants to encrypt
-    	System.out.println("How Would You Like to Encrypt? - Available Currently: Ceaser Cypher");
-    	System.out.println("For Ceaser Cypher, enter Ceaser"); //More would be added in as more encryption ways are added into the program
+    	System.out.println("How Would You Like to Encrypt? - Available Currently: Ceaser Cypher, Alpha Number Encryption");
+    	System.out.println("For Ceaser Cypher, enter Ceaser, For Alpha Number, enter AlphaNum"); //More would be added in as more encryption ways are added into the program
 
     	String howE = scanner.next();
 
@@ -34,29 +36,49 @@ public static void main(String[] args) {
             System.out.println("What is the text you would like to encrypt?");
             String textE = scanner1.next();
 
-            System.out.println("What is the offset for the Ceaser Cypher?");
+            System.out.println("What is the offset for the Ceaser Cypher? Enter 0 for an random offset");
     		String numE = scanner1.next();
 
     		int numEi = Integer.parseInt(numE);
 
+    		if (numEi == 0) {	
+    			Ran r = new Ran();
+    			numEi = r.ran();	
+    		}
+    		
     		String encrypted = Encrypter.encode(textE, numEi);
 
-    		System.out.println("Below is encrypted Text with Ceaser Cypher, offset of " + numE);
+    		System.out.println("Below is encrypted Text with Ceaser Cypher, offset of " + numEi);
     		System.out.println(encrypted);
 
+    		System.out.println("please reload the application again if you want to do another calculation");
+
             // close the scanner
             scanner1.close();
 
-                scanner.close();
 
+        	} else if (howE.equals("AlphaNum")) {
+        		
+        		
+        		System.out.println("Please enter the message to encrypt with NO SYMBOLS(symbols will look weird afterwards) :");
+        		String s = scanner1.nextLine();
+        		
+        		System.out.println("How much do you want to multiply the encryption (The bigger the better but slower) NO DECIMALS");
+        		String numS = scanner1.nextLine();
+        		int num = Integer.parseInt(numS);
+        		
+    			e.encryptM(s, num);
+        		
+    			
         	}
+    	
         } else if (EorD.equals("Decrypt")){
 
         		System.out.println("Decrypting message");
 
         		//Asks the user how they want to decrypt
-            	System.out.println("How Would You Like to Decrypt? - Available Currently: Ceaser Cypher");
-            	System.out.println("For Ceaser Cypher, enter Ceaser"); //More would be added in as more encryption ways are added into the program
+            	System.out.println("How Would You Like to Decrypt? - Available Currently: Ceaser Cypher, Alpha Numeric");
+            	System.out.println("For Ceaser Cypher, enter Ceaser. For Alpha Numeric, enter AlphaNum"); //More would be added in as more encryption ways are added into the program
             	String howD = scanner.next();
 
             	 if(howD.equals("Ceaser")) {
@@ -74,15 +96,35 @@ public static void main(String[] args) {
 
             		String decrypted = Encrypter.encode(textD, newNumDi);
 
-            		System.out.println(decrypted);
+            		System.out.println("Here is the Decrypted message with an offset of " + numDi + ": " +  decrypted);
+            		
+            		System.out.println("please reload the application again if you want to do another calculation");
 
-            		System.out.println("please close and open the application again if you want to do another calculation");
+            	} else if (howD.equals("AlphaNum")){
 
+            		System.out.println("Please enter the numbers WITHOUT THE BRACKETS");
+            		String sampleString = scanner.next();
+            		
+            	      String[] stringArray = sampleString.split(",");
+            	      int[] intArray = new int[stringArray.length];
+            	      for (int i = 0; i < stringArray.length; i++) {
+            	         String numberAsString = stringArray[i];
+            	         intArray[i] = Integer.parseInt(numberAsString);
+            	      }
+            	      System.out.println("Number of letters/integers: " + intArray.length);
+            		
+            		System.out.println("Please enter the amount you multiplied:");
+            		String numS = scanner.next();
+            		int num = e.parseD(numS);
+            		e.decryptM(intArray, num);
 
             	}
 
 
          }
+        //Closes everything that hasn't been previusly closed  to prevent an memory leak
+		scanner.close();
+        
         	}
 
-}
+}

Ran.java

@@ -0,0 +1,16 @@
+package base;
+
+import java.util.Random;
+
+public class Ran {
+
+	public int ran() {
+		
+		int numEi;
+		Random rand = new Random();
+		numEi = rand.nextInt(24) + 1;
+		return numEi;
+
+	}
+	
+}