第四次提交

system.java

@@ -1,11 +1,12 @@
-   package java6201.lesson03;
+package java1292.lesson051292;
 
 import javafx.application.Application;
 import javafx.geometry.Insets;
 import javafx.geometry.Pos;
-   import javafx.scene.Scene;
+import javafx.scene.Scene;import javafx.scene.control.Alert;
-   import javafx.scene.control.Alert;
+
         import javafx.scene.control.Alert.AlertType;
+import javafx.scene.control.Alert;
 import javafx.scene.control.Button;
 import javafx.scene.control.Label;
 import javafx.scene.control.TextField;