diff --git a/src/main/java/baseball/Application.java b/src/main/java/baseball/Application.java
index dd95a34214..340d00dc9b 100644
--- a/src/main/java/baseball/Application.java
+++ b/src/main/java/baseball/Application.java
@@ -1,7 +1,101 @@
-package baseball;
-
-public class Application {
-    public static void main(String[] args) {
-        // TODO: 프로그램 구현
-    }
-}
+package baseball;
+
+import java.util.Random;
+import java.util.Scanner;
+
+public class Application {
+    public static void main(String[] args) {
+
+        Scanner scan = new Scanner(System.in);
+
+        System.out.println("숫자 야구 게임을 시작합니다.?");
+
+        while (true) {
+
+            Random random = new Random();
+            int answerNum = 100 + random.nextInt(900);
+
+            System.out.println("정답: " + answerNum);
+
+            while (true) {
+
+                int answerOne = answerNum / 100;
+                int answerTwo = (answerNum % 100) / 10;
+                int answerThree = answerNum % 10;
+
+                System.out.print("숫자를 입력해주세요 : ");
+
+                int inputNum;
+
+                try {
+
+                    inputNum = scan.nextInt();
+
+                    if (inputNum < 100 || inputNum > 999) {
+                        throw new IllegalArgumentException();
+                    }
+
+                } catch (IllegalArgumentException e) {
+                    return;
+                }
+
+                int myOne = inputNum / 100;
+                int myTwo = (inputNum % 100) / 10;
+                int myThree = inputNum % 10;
+
+                int ballCnt = 0;
+                int strikeCnt = 0;
+
+                if (myOne == answerOne) {
+                    strikeCnt++;
+                } else if (myOne == answerTwo || myOne == answerThree) {
+                    ballCnt++;
+                }
+
+                if (myTwo == answerTwo) {
+                    strikeCnt++;
+                } else if (myTwo == answerOne || myTwo == answerThree) {
+                    ballCnt++;
+                }
+
+                if (myThree == answerThree) {
+                    strikeCnt++;
+                } else if (myThree == answerOne || myThree == answerTwo) {
+                    ballCnt++;
+                }
+
+                if (strikeCnt == 3) {
+                    System.out.println("3개의 숫자를 모두 맞히셨습니다! 게임 종료");
+                    System.out.println("게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.");
+
+                    int choice;
+                    try {
+                        choice = scan.nextInt();
+
+                        if (choice != 1 && choice != 2) {
+                            throw new IllegalArgumentException();
+                        }
+                    } catch (IllegalArgumentException e) {
+                        return;
+                    }
+
+                    if (choice == 1) {
+                        break;
+                    } else if (choice == 2) {
+                        return;
+                    }
+
+                } else if (ballCnt == 0 && strikeCnt == 0) {
+                    System.out.println("낫싱");
+                } else if (ballCnt == 0) {
+                    System.out.println(strikeCnt + "스트라이크");
+                } else if (strikeCnt == 0) {
+                    System.out.println(ballCnt + "볼");
+                } else {
+                    System.out.println(ballCnt + "볼 " + strikeCnt + "스트라이크");
+                }
+
+            }
+        }
+    }
+}