接口Java、Kotlin对比实现

BetterZhang · Jun 28, 2017 · 2d4b86f · 2d4b86f
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diff --git a/src/com/betterzhang/learnkotlin/java/Book.java b/src/com/betterzhang/learnkotlin/java/Book.java
@@ -0,0 +1,17 @@
+package com.betterzhang.learnkotlin.java;
+
+/**
+ * Created by IntelliJ IDEA.
+ * Author : Andrew Zhang
+ * Email  : betterzhang.dev@gmail.com
+ * Time   : 2017/06/28 上午 9:54
+ * Desc   : description
+ */
+public class Book implements Readable {
+
+    @Override
+    public String getContent() {
+        return "Hello Java";
+    }
+
+}
diff --git a/src/com/betterzhang/learnkotlin/java/Readable.java b/src/com/betterzhang/learnkotlin/java/Readable.java
@@ -0,0 +1,14 @@
+package com.betterzhang.learnkotlin.java;
+
+/**
+ * Created by IntelliJ IDEA.
+ * Author : Andrew Zhang
+ * Email  : betterzhang.dev@gmail.com
+ * Time   : 2017/06/28 上午 9:53
+ * Desc   : description
+ */
+public interface Readable {
+
+    String getContent();
+
+}
diff --git a/src/com/betterzhang/learnkotlin/kotlin/Book.kt b/src/com/betterzhang/learnkotlin/kotlin/Book.kt
@@ -0,0 +1,22 @@
+package com.betterzhang.learnkotlin.kotlin
+
+/**
+ * Created by IntelliJ IDEA.
+ * Author : Andrew Zhang
+ * Email  : betterzhang.dev@gmail.com
+ * Time   : 2017/06/28 上午 9:56
+ * Desc   : description
+ */
+class Book : Readable {
+
+//    override fun getContent(): String {
+//        return "Hello Kotlin"
+//    }
+
+    override fun getContent(): String = "Hello Kotlin"
+
+    override fun getVersion(): Int {
+        return super.getVersion()
+    }
+
+}
diff --git a/src/com/betterzhang/learnkotlin/kotlin/Readable.kt b/src/com/betterzhang/learnkotlin/kotlin/Readable.kt
@@ -0,0 +1,15 @@
+package com.betterzhang.learnkotlin.kotlin
+
+/**
+ * Created by IntelliJ IDEA.
+ * Author : Andrew Zhang
+ * Email  : betterzhang.dev@gmail.com
+ * Time   : 2017/06/28 上午 9:55
+ * Desc   : description
+ */
+interface Readable {
+
+    fun getContent(): String
+    fun getVersion(): Int = 0
+
+}