Removed spaces from top-level directory names.

Spaces tend to cause annoyances in a Unix-style shell environment.
This change fixes that.

15_Boxing/java/Punch.java

@@ -0,0 +1,27 @@
+import java.util.Arrays;
+
+/**
+ * Types of Punches
+ */
+public enum Punch {
+    FULL_SWING(1),
+    HOOK(2),
+    UPPERCUT(3),
+    JAB(4);
+
+    private final int code;
+
+    Punch(int code) {
+        this.code = code;
+    }
+
+    int getCode() { return  code;}
+
+    public static Punch fromCode(int code) {
+        return Arrays.stream(Punch.values()).filter(p->p.code == code).findAny().orElse(null);
+    }
+
+    public static Punch random() {
+        return Punch.fromCode(Basic.randomOf(4));
+    }
+}