diff --git a/src/effectivejava/chapter2/item1/StaticFactoryMethods.java b/src/effectivejava/chapter2/item1/StaticFactoryMethods.java
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+package effectivejava.chapter2.item1;
+
+import java.math.BigInteger;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.Statement;
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.Random;
+import java.util.Set;
+
+/**
+ * @Description: 静态工厂方法
+ * @Author: Baixin
+ * @Create: 2019-08-25 19:44:07
+ **/
+public class StaticFactoryMethods {
+    public static void main(String[] args) {
+        BigInteger bigInt = BigInteger.probablePrime(2, new Random());
+
+        Set<SampleEnum> s = Collections.synchronizedSet(EnumSet.noneOf(SampleEnum.class));
+
+        try {
+            // 首先要导入数据库驱动jar包、直接复制到文件那里，然后加入到路径
+            // 1. 注册驱动，java反射机制
+            Class.forName("com.mysql.jdbc.Driver");
+            // 2. 创建一个连接对象
+            Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb", "root", "password");
+            // 3. 创建一个sql语句的发送命令对象
+            Statement stmt = conn.createStatement();
+            // 4. 执行sql,拿到查询的结果集对象
+            ResultSet rs = stmt.executeQuery("select * from stu");
+            // 5. 输出结果集的数据
+            while (rs.next()) {
+                System.out.println(rs.getInt("id") + ":" + rs.getString("name"));
+            }
+            // 6. 关闭连接，命令对象以及结果集。
+            rs.close();
+            stmt.close();
+            conn.close();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    enum SampleEnum {
+        ENUM1,
+        ENUM2,
+        ENUM3;
+    }
+
+}