javajigi · Oct 4, 2018 · Oct 4, 2018
diff --git a/src/main/java/coordinate/Coordinate.java b/src/main/java/coordinate/Coordinate.java
@@ -0,0 +1,28 @@
+package coordinate;
+
+import java.util.ArrayList;
+
+public class Coordinate {
+    private ArrayList<MyString> coordinate;
+
+    public Coordinate() {
+        ArrayList<MyString> numCoordinate = new ArrayList<>();
+        for (int i = 0; i < 25; i++) {
+            numCoordinate.add(new MyString(i));
+        }
+        this.coordinate = numCoordinate;
+    }
+
+    public void displayYCoordinate() {
+        for (int i = 24; i > 0; i--) {
+            System.out.println(this.coordinate.get(i) + "l");
+        }
+    }
+
+    public void displayXCoordinate() {
+        System.out.println("   +-----------------------------------------------------------------------");
+        for (MyString myString : this.coordinate) {
+            System.out.print(myString);
+        }
+    }
+}
diff --git a/src/main/java/coordinate/MyString.java b/src/main/java/coordinate/MyString.java
@@ -0,0 +1,26 @@
+package coordinate;
+
+public class MyString {
+    private String displayString;
+
+    public MyString(int num) {
+        this.displayString = makeString(num);
+    }
+
+    public static String makeString(int i) {
+        if (i % 2 == 0) {
+            return String.format("%3d", i);
+        }
+
+        return "   ";
+    }
+    /*
+    public static String makeString() {
+        return String.format("%3s", "*");
+    }
+*/
+    @Override
+    public String toString() {
+        return displayString;
+    }
+}
diff --git a/src/main/java/empty.txt b/src/main/java/empty.txt
diff --git a/src/test/java/coordinate/CoordinateTest.java b/src/test/java/coordinate/CoordinateTest.java
@@ -0,0 +1,26 @@
+package coordinate;
+
+import org.junit.Test;
+
+import java.util.ArrayList;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class CoordinateTest {
+
+    @Test
+    public void displayTest() {
+        // 배열을 만들어 0부터 24 한칸씩 띄워 배열을 생성
+        // x 축에 0을 포함 y축 그릴땐 0번째 제외
+        Coordinate coordinate = new Coordinate();
+        coordinate.displayYCoordinate();
+        coordinate.displayXCoordinate();
+    }
+    @Test
+    public void StringTest() {
+        String a = MyString.makeString(4);
+        assertThat(a).isEqualTo("  4");
+        assertThat(MyString.makeString(3)).isEqualTo("   ");
+        assertThat(MyString.makeString(6)).isEqualTo("  6");
+    }
+}
diff --git a/src/test/java/empty.txt b/src/test/java/empty.txt