diff --git a/.classpath b/.classpath
new file mode 100644
index 0000000..af6f9dc
--- /dev/null
+++ b/.classpath
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/.gitignore b/.gitignore
index 0bb47a3..7ebc4a7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,3 +28,4 @@ git.properties
 
 #IDEA Project Files
 .idea/
+/bin/
diff --git a/.project b/.project
new file mode 100644
index 0000000..e0ffbb5
--- /dev/null
+++ b/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>enc-dec</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>
diff --git a/src/crypto/Crypto.java b/src/crypto/Crypto.java
index 51d57b7..157d9ca 100644
--- a/src/crypto/Crypto.java
+++ b/src/crypto/Crypto.java
@@ -2,9 +2,17 @@
 
 import java.util.Scanner;
 
+import translater.Translater;
+import translater.TranslaterFactory;
+
 public class Crypto {
     public static void main(String[] args) {
-        Scanner scanner = new Scanner(System.in);
-	// write your code here
+    	Scanner scanner = new Scanner(System.in);
+    	String cmd = scanner.nextLine();
+    	String message = scanner.nextLine();
+    	int key = scanner.nextInt();
+    	scanner.close();
+    	Translater translater = TranslaterFactory.getTranslater(cmd,message,key);
+    	System.out.println(translater.translate());
     }
 }
diff --git a/src/translater/Decrypter.java b/src/translater/Decrypter.java
new file mode 100644
index 0000000..ac61c9c
--- /dev/null
+++ b/src/translater/Decrypter.java
@@ -0,0 +1,10 @@
+package translater;
+
+public class Decrypter extends Translater{
+	public Decrypter(String message, int key) {
+		super(message,key);
+	}
+	public char symbolChange(char incomeWord) {
+		return (char)((incomeWord-key)%127);
+	}
+}
diff --git a/src/translater/Encrypter.java b/src/translater/Encrypter.java
new file mode 100644
index 0000000..1078945
--- /dev/null
+++ b/src/translater/Encrypter.java
@@ -0,0 +1,10 @@
+package translater;
+
+public class Encrypter extends Translater {
+	public Encrypter(String message, int key) {
+		super(message,key);
+	}
+	public char symbolChange(char incomeWord) {
+		return (char)((incomeWord+key)%127);
+	}
+}
diff --git a/src/translater/Translater.java b/src/translater/Translater.java
new file mode 100644
index 0000000..e76697b
--- /dev/null
+++ b/src/translater/Translater.java
@@ -0,0 +1,20 @@
+package translater;
+
+public abstract class Translater {
+	public String message;
+	public int key;
+	public Translater(String message, int key) {
+		this.message = message;
+		this.key = key;
+	}
+	//TRANSLATING STRING
+	public String translate() {
+		char[] tempArray = message.toCharArray();
+		for (int i = 0; i < tempArray.length; i++) {
+			tempArray[i] = symbolChange(tempArray[i]);
+		}
+		return String.valueOf(tempArray);
+	}
+	//ABSTRACT SYMBOL CHANGE METHOD
+	public abstract char symbolChange(char incomeWord);	
+}
diff --git a/src/translater/TranslaterFactory.java b/src/translater/TranslaterFactory.java
new file mode 100644
index 0000000..b8c51d3
--- /dev/null
+++ b/src/translater/TranslaterFactory.java
@@ -0,0 +1,14 @@
+package translater;
+
+public class TranslaterFactory {
+	public static Translater getTranslater(String cmd, String message, int key) {
+		switch (cmd){
+		case "dec":
+			return new Decrypter(message, key);
+		case "enc":
+			return new Encrypter(message, key);
+		default:
+			return null;
+		}
+	}
+}