[자동차 경주] 이해찬 4단계 미션 제출합니다.

src/main/java/Car.java

@@ -0,0 +1,39 @@
+import java.util.Comparator;
+import java.util.Random;
+import javax.management.RuntimeErrorException;
+
+public class Car{
+
+  public int pos=0;
+  public int carId;
+  public int rank;
+  private int RAND_MAX = 9;
+
+
+  public Car(int Id) {
+    this.pos = 0;
+    this.carId = Id;
+  }
+
+  public void move() {
+    int rand = getRandNum();
+    go(rand);
+  }
+
+  public void go(int num) {
+      if (num < 3) {
+        pos +=1;
+        return;
+      }
+      if (num < 9) {
+        return;
+      }
+      throw new RuntimeException("예상치 못한 랜덤값 입력");
+  }
+
+  public int getRandNum() {
+    Random random = new Random();
+    int randNum = random.nextInt(RAND_MAX);
+    return randNum;
+  }
+}