diff --git a/student/StudentTest.java b/student/StudentTest.java
new file mode 100644
index 0000000..d0b98c1
--- /dev/null
+++ b/student/StudentTest.java
@@ -0,0 +1,29 @@
+public class StudentTest {public static void main(String[] args) {
+    Student stu1 = new Student();
+    stu1.studentId = "001";
+    stu1.name = "Wang";
+    stu1.score = 85.5;
+
+    Student stu2 = stu1;
+
+    stu1.study();
+    stu2.study();
+
+    System.out.println("stu1 的名字: " + stu1.name);
+    System.out.println("stu2 的名字: " + stu2.name);
+
+    stu2.name = "Li";
+
+    System.out.println("修改后 stu1 的名字: " + stu1.name);
+    System.out.println("修改后 stu2 的名字: " + stu2.name);
+}
+}
+class Student {String studentId;
+    String name;
+    double score;
+
+    public void study() {
+        System.out.println(name + " 正在学习");
+    }
+
+}