[wip]ch 19

yuki · yuki · commit d5a48a59a204 · 2018-10-18T18:35:19.000+08:00
diff --git a/src/java/code/ch19/EnumClass.java b/src/java/code/ch19/EnumClass.java
@@ -0,0 +1,36 @@
+package code.ch19;
+
+/**
+ * @author yuzhe
+ * @since 10/18/18
+ */
+/**
+ * @author yuzhe
+ * @since 10/18/18
+ */
+
+enum Shrubbery {
+    GROUND,
+    CRAWLING,
+    HANGING
+}
+
+public class EnumClass {
+
+    public static void main(String[] args) {
+        for (Shrubbery s : Shrubbery.values()) {
+            System.out.println(s + ".ordinal = " + s.ordinal());
+            System.out.println(s + ".compareTo(" + Shrubbery.GROUND + ") = " + s.compareTo(Shrubbery.GROUND));
+            System.out.println(s + " == " + Shrubbery.HANGING + " = " + (s == Shrubbery.HANGING));
+            System.out.println(s.getDeclaringClass());
+            System.out.println(s.name());
+            System.out.println("--------------------------------------");
+        }
+        for (String s : "GROUND CRAWLING HANGING".split(" ")) {
+            Shrubbery shrubbery = Shrubbery.valueOf(s);
+            System.out.println(shrubbery);
+        }
+
+    }
+
+}
