diff --git a/src/main/java/Application.java b/src/main/java/Application.java
index 2eff66f..8746359 100644
--- a/src/main/java/Application.java
+++ b/src/main/java/Application.java
@@ -2,70 +2,34 @@
 import java.util.Scanner;
 
 public class Application {
-    public static void setComputerNumbers(int computer[], Random random){
-        int i =0;
-        while(i<3){
-            int x=0;
-            if(i==0){
-                computer[i]=random.nextInt(8)+1;
-            }
-            else{
-                computer[i]=random.nextInt(8)+1;
-                if(i==1 && computer[i]==computer[i-1]) continue;
-                if(i==2 && computer[i]==computer[i-1] | computer[i]==computer[i-2]) continue;
-            }
-            i++;
-        }
-    }
-    public static int checkUserAndComputer(int user[],int computer[], int tmp, int ball, int strike){
-        user[0]=tmp/100;
-        user[1]=(tmp/10)%10;
-        user[2]=tmp%10;
 
-        for (int j = 0; j < 3; j++) {
-            for (int k = 0; k < 3; k++) {
-                if (computer[j] == user[k]) {
-                    if (j == k) strike++;
-                    else ball++;
-                    break;
-                }
-            }
-        }
-        if (strike == 0 && ball == 0)
-            System.out.printf("낫싱");
-        else if (ball == 0)
-            System.out.printf(strike + "스트라이크 ");
-        else if (strike == 0)
-            System.out.printf(ball + "볼 ");
-        else
-            System.out.printf(strike + "스트라이크 " + ball + "볼");
-        return strike;
-    }
     public static void main(String[] args) {
-        final int INITIAL_COUNT = 0;
+        final int Initial_Num = 0;
         final int MAX_NUMBER_LENGTH = 3;
         int game = 1;
+
         while(game==1){
+            int[] computer;
+            int[] user;
+            int strike = Initial_Num;
 
-            int computer[] = new int[3];
-            int user[] = new int[3];
-            int strike = INITIAL_COUNT;
-            int ball=INITIAL_COUNT;
-            Random random  = new Random();
             Scanner input = new Scanner(System.in);
 
-            setComputerNumbers(computer,random);
+            computer = Computer.Create();
+
+            while(strike<MAX_NUMBER_LENGTH) {
+                int strikeAndBallArry[] = new int[2];
 
-            while(strike<3) {
                 System.out.printf("\n숫자를 입력해 주세요 : ");
-                int tmp = input.nextInt();
-                ball = 0;
-                strike = 0;
 
-                strike = checkUserAndComputer(user, computer, tmp, ball, strike);
+                user = User.Create();
+                strikeAndBallArry = Computer.Check(user,computer);
+                strike = Computer.numBallAndStrike(strikeAndBallArry);
             }
+
             System.out.println("3개의 숫자를 모두 맞히셨습니다! 게임종료\n");
             System.out.println("게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.");
+
             if(input.nextInt()== 2) {
                 game = 2;
             } else {
diff --git a/src/main/java/Computer.java b/src/main/java/Computer.java
new file mode 100644
index 0000000..a4db89a
--- /dev/null
+++ b/src/main/java/Computer.java
@@ -0,0 +1,64 @@
+import java.util.Random;
+
+public class Computer {
+
+    public static int[] Create(){
+        Random random  = new Random();
+        int numBoundary =0;
+        int[] _computerNum = new int[3];
+
+        while(numBoundary<3){
+            if(numBoundary==0){
+                _computerNum[numBoundary]=random.nextInt(8)+1;
+            }
+            else{
+                _computerNum[numBoundary]=random.nextInt(8)+1;
+                if(numBoundary==1 && _computerNum[numBoundary]==_computerNum[numBoundary-1]) continue;
+                if(numBoundary==2 && _computerNum[numBoundary]==_computerNum[numBoundary-1] | _computerNum[numBoundary]==_computerNum[numBoundary-2]) continue;
+            }
+            numBoundary++;
+        }
+        return _computerNum;
+    }
+
+    public static int[] Check(int[] _userNum, int[] _computerNum){
+        int _strike =0;
+        int _ball = 0;
+        int[] _strikeAndBallArry = new int[2];
+
+        for (int j = 0; j < 3; j++) {
+            for (int k = 0; k < 3; k++) {
+                if (_computerNum[j] == _userNum[k]) {
+                    if (j == k) {
+                        _strike++;
+                    } else {
+                        _ball++;
+                    }
+                    break;
+                }
+            }
+        }
+
+        _strikeAndBallArry[0]=_ball;
+        _strikeAndBallArry[1]=_strike;
+
+        return  _strikeAndBallArry;
+    }
+
+    public static int numBallAndStrike(int[] _strikeAndBallArry) {
+        if (_strikeAndBallArry[0] == 0 && _strikeAndBallArry[1] == 0) {
+            System.out.printf("낫싱");
+        } else if (_strikeAndBallArry[0] == 0) {
+            System.out.printf(_strikeAndBallArry[1] + "스트라이크 ");
+        } else if (_strikeAndBallArry[1] == 0) {
+            System.out.printf(_strikeAndBallArry[0] + "볼 ");
+        } else {
+            System.out.printf(_strikeAndBallArry[1] + "스트라이크 " + _strikeAndBallArry[0] + "볼");
+        }
+
+        if (_strikeAndBallArry[1] == 3) {
+            return _strikeAndBallArry[1];
+        }
+        return 0;
+    }
+}
diff --git a/src/main/java/User.java b/src/main/java/User.java
new file mode 100644
index 0000000..1f0182e
--- /dev/null
+++ b/src/main/java/User.java
@@ -0,0 +1,16 @@
+import java.util.Scanner;
+
+public class User {
+
+    public static int[] Create(){
+        Scanner input = new Scanner(System.in);
+        int[] _userNum = new int[3];
+        int tmp = input.nextInt();
+
+        _userNum[0]=tmp/100;
+        _userNum[1]=(tmp/10)%10;
+        _userNum[2]=tmp%10;
+
+        return _userNum;
+    }
+}