diff --git "a/day01/code/01_HelloWorld\346\241\210\344\276\213/Student.java" "b/day01/code/01_HelloWorld\346\241\210\344\276\213/Student.java"
index f20bf67..578ee35 100644
--- "a/day01/code/01_HelloWorld\346\241\210\344\276\213/Student.java"
+++ "b/day01/code/01_HelloWorld\346\241\210\344\276\213/Student.java"
@@ -25,5 +25,7 @@
 class Student {
 	public static void main(String[] args) {
 		System.out.println("我是学生");
+		
+		System.out.println("第一次修改");
 	}
 }
\ No newline at end of file
diff --git "a/day01/code/04_\346\240\207\350\257\206\347\254\246/NameDemo.java" "b/day01/code/04_\346\240\207\350\257\206\347\254\246/NameDemo.java"
index 2838323..a66ae11 100644
--- "a/day01/code/04_\346\240\207\350\257\206\347\254\246/NameDemo.java"
+++ "b/day01/code/04_\346\240\207\350\257\206\347\254\246/NameDemo.java"
@@ -39,5 +39,6 @@
 class NameDemo {
 	public static void main(String[] args) {
 		System.out.println("Hello World!");
+		System.out.println("Hello World!");
 	}
 }
\ No newline at end of file
diff --git "a/day06/code/04_\347\261\273\347\232\204\344\275\277\347\224\250/\345\244\232\344\270\252java\346\226\207\344\273\266\345\244\232\344\270\252class/Phone.java" "b/day06/code/04_\347\261\273\347\232\204\344\275\277\347\224\250/\345\244\232\344\270\252java\346\226\207\344\273\266\345\244\232\344\270\252class/Phone.java"
index 89fdf5e..63dcdd8 100644
--- "a/day06/code/04_\347\261\273\347\232\204\344\275\277\347\224\250/\345\244\232\344\270\252java\346\226\207\344\273\266\345\244\232\344\270\252class/Phone.java"
+++ "b/day06/code/04_\347\261\273\347\232\204\344\275\277\347\224\250/\345\244\232\344\270\252java\346\226\207\344\273\266\345\244\232\344\270\252class/Phone.java"
@@ -19,5 +19,7 @@ public void call(String name) {
 	//发短信
 	public void sendMessage() {
 		System.out.println("群发短信");
+		System.out.println("输出当前方法class:"+this.sendMessage().class);
 	}
+	
 }
\ No newline at end of file
diff --git a/day12/code/day12_String/src/cn/itcast_04/StringTest2.java b/day12/code/day12_String/src/cn/itcast_04/StringTest2.java
index 72ef7ee..bdc5921 100644
--- a/day12/code/day12_String/src/cn/itcast_04/StringTest2.java
+++ b/day12/code/day12_String/src/cn/itcast_04/StringTest2.java
@@ -63,5 +63,7 @@ public static void main(String[] args) {
 		System.out.println("大写：" + bigCount);
 		System.out.println("小写：" + smallCount);
 		System.out.println("数字：" + numberCount);
+		System.out.println("===============");
+		System.out.println("结束");
 	}
 }