diff --git a/src/main/java/baseball/Application.java b/src/main/java/baseball/Application.java
index dd95a34214..61421c1677 100644
--- a/src/main/java/baseball/Application.java
+++ b/src/main/java/baseball/Application.java
@@ -1,7 +1,85 @@
 package baseball;
 
+import java.util.Scanner;
+import java.util.Random;
+
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+        {
+            Scanner input = new Scanner(System.in);
+            Random rand = new Random();
+            int ranNum = rand.nextInt(900)+100;
+            String sNum = String.valueOf(ranNum);
+            String[] arrStr = sNum.split("");
+
+            int strikeNum = 0;
+            int ballNum = 0;
+            System.out.println("숫자 야구 게임을 시작합니다.");
+            while(true){
+                int in;
+                System.out.print("숫자를 입력해주세요 : ");
+                in = input.nextInt();
+                if(in >=1000 || in <= 100){
+                    throw new IllegalArgumentException("세자리 수를 입력해야 합니다.\n프로그램을 종료합니다.");
+                }
+                int[] arr = new int[3];
+                arr[0] = in/100;
+                arr[1] = (in%100)/10;
+                arr[2] = in%10;
+                String[] arrStr2 = {arr[0]+"",arr[1]+"",arr[2]+""};
+
+                for(int i = 0; i < 3; i++){
+                    if(arrStr2[i].equals(arrStr[i])){
+                        strikeNum++;
+                    }
+                }
+                if(strikeNum == 2){
+                    System.out.print("2스트라이크\n");
+                    strikeNum=0;
+                }else if(strikeNum == 1){
+                    for(int i = 0; i < 3; i++){
+                        for(int j = 0; j < 3; j++){
+                            if(arrStr2[j].equals(arrStr[i])){
+                                ballNum++;
+                            }
+                        }
+                    }
+                    if(ballNum-strikeNum != 0)
+                        System.out.print(ballNum-strikeNum + "볼 ");
+                    System.out.print("1스트라이크\n");
+                    ballNum=0;
+                    strikeNum=0;
+                }else if(strikeNum == 0){
+                    for(int i = 0; i < 3; i++){
+                        for(int j = 0; j < 3; j++){
+                            if(arrStr2[j].equals(arrStr[i])){
+                                ballNum++;
+                            }
+                        }
+                    }
+                    if(ballNum-strikeNum == 0)
+                        System.out.print("낫싱\n");
+                    else{
+                        System.out.print(ballNum-strikeNum + "볼 \n");
+                        strikeNum=0;
+                        ballNum=0;
+                    }
+                }else if(strikeNum == 3) {
+                    System.out.print("3스트라이크 \n3개의 숫자를 모두 맞히셨습니다! 게임 종료\n");
+                    strikeNum=0;
+                    ballNum=0;
+                    System.out.println("게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.");
+                    int re = input.nextInt();
+                    if (re == 2)
+                        break;
+                    else{
+                        ranNum = rand.nextInt(900)+100;
+                        sNum = String.valueOf(ranNum);
+                        arrStr = sNum.split("");
+                        continue;
+                    }
+                }
+            }
+        }
     }
 }