这里应该是写错了，如果按照原来的代码无论Lambda表达式里面的内容如何都只是打印类名。

Mzmba · Mzmba · commit 73abf01335d4 · 2022-09-16T17:46:12.000+08:00
diff --git a/docs/java/new-features/java8-common-new-features.md b/docs/java/new-features/java8-common-new-features.md
@@ -186,7 +186,7 @@ public class LambdaClass {
     }
     //函数式接口参数
     static void lambdaInterfaceDemo(LambdaInterface i){
-        System.out.println(i);
+        i.f();
     }
 }
 ```

Original file line number	Diff line number	Diff line change
`@@ -186,7 +186,7 @@ public class LambdaClass {`
`186`	`186`	`}`
`187`	`187`	`//函数式接口参数`
`188`	`188`	`static void lambdaInterfaceDemo(LambdaInterface i){`
`189`		`- System.out.println(i);`
	`189`	`+ i.f();`
`190`	`190`	`}`
`191`	`191`	`}`
`192`	`192`	```