diff --git a/javaSE-day07/src/com/inmind/lambda01/Demo01.java b/javaSE-day07/src/com/inmind/lambda01/Demo01.java
index e59cb7d..62b074c 100644
--- a/javaSE-day07/src/com/inmind/lambda01/Demo01.java
+++ b/javaSE-day07/src/com/inmind/lambda01/Demo01.java
@@ -45,5 +45,9 @@ public class Demo01 {
         }).start();
         //-------------------------------以下使用函数式编程思想优化以上的代码（lambda）----------------------------------
         new Thread(()->{ System.out.println(Thread.currentThread().getName()+"线程启动了");}).start();
+        //以下代码中方法体只有一条java语句，省略了大括号，分号
+        new Thread(()->System.out.println(Thread.currentThread().getName()+"线程启动了")).start();
+
+
     }
 }
diff --git a/javaSE-day07/src/com/inmind/lambda01/Demo02.java b/javaSE-day07/src/com/inmind/lambda01/Demo02.java
index eeba643..49dc22e 100644
--- a/javaSE-day07/src/com/inmind/lambda01/Demo02.java
+++ b/javaSE-day07/src/com/inmind/lambda01/Demo02.java
@@ -27,7 +27,8 @@ public class Demo02 {
             }
         });*/
 
-        Collections.sort(students,(Student o1, Student o2)->{ return o2.score - o1.score;});
+//        Collections.sort(students,(Student o1, Student o2)->{ return o2.score - o1.score;});
+        Collections.sort(students,(o1,  o2)-> o2.score - o1.score);
 
         System.out.println(students);
     }
diff --git a/javaSE-day07/src/com/inmind/lambda01/Demo03.java b/javaSE-day07/src/com/inmind/lambda01/Demo03.java
new file mode 100644
index 0000000..cca392a
--- /dev/null
+++ b/javaSE-day07/src/com/inmind/lambda01/Demo03.java
@@ -0,0 +1,12 @@
+package com.inmind.lambda01;
+/*
+ lambda表达式的省略语法:
+    1.参数列表()中的数据类型可以省略
+    2.如果(),参数列表中只有一个参数,并且数据类型已经省略,那么小括号也可以省略
+    3.如果{}中只有一条java语句,那么大括号,return,分号可以同时省略
+ */
+public class Demo03 {
+    public static void main(String[] args) {
+
+    }
+}