内部类

Author: huang-yongTech

src/main/java/com/hy/innerclass/IClass.java

@@ -0,0 +1,8 @@
+package com.hy.innerclass;
+
+/**
+ * Created by huangyong on 2020/4/16
+ */
+interface IClass {
+    void print();
+}

src/main/java/com/hy/innerclass/Outer.java

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+package com.hy.innerclass;
+
+/**
+ * Created by huangyong on 2020/4/16
+ */
+public class Outer {
+    private String name = "outer name";
+
+    public class Inner implements IClass {
+
+        @Override
+        public void print() {
+            System.out.println(name);
+        }
+    }
+}

src/main/java/com/hy/innerclass/Test.java

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+package com.hy.innerclass;
+
+/**
+ * Created by huangyong on 2020/4/16
+ */
+public class Test {
+    public static void main(String[] args) {
+        Outer outer = new Outer();
+        Outer.Inner inner = outer.new Inner();
+        inner.print();
+    }
+}