From 6c58e9cd34515bd0b2b1f687187b1397afd50abe Mon Sep 17 00:00:00 2001
From: baimo <baixin@bilibili.com>
Date: Mon, 26 Aug 2019 04:00:36 +0800
Subject: [PATCH 1/2] Add item1 demo

---
 .../chapter2/item1/StaticFactoryMethods.java  | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 src/effectivejava/chapter2/item1/StaticFactoryMethods.java

diff --git a/src/effectivejava/chapter2/item1/StaticFactoryMethods.java b/src/effectivejava/chapter2/item1/StaticFactoryMethods.java
new file mode 100644
index 00000000..61b77190
--- /dev/null
+++ b/src/effectivejava/chapter2/item1/StaticFactoryMethods.java
@@ -0,0 +1,23 @@
+package effectivejava.chapter2.item1;
+
+import java.math.BigInteger;
+import java.util.*;
+
+/**
+ * @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));
+    }
+
+    enum SampleEnum {
+        ENUM1,
+        ENUM2,
+        ENUM3;
+    }
+}

From 9768aa3e4afdd78ed8c8fc717f5227a2dd9b9cc7 Mon Sep 17 00:00:00 2001
From: baimo <baixin@bilibili.com>
Date: Wed, 28 Aug 2019 23:54:32 +0800
Subject: [PATCH 2/2] Add item1 demo

---
 .../chapter2/item1/StaticFactoryMethods.java  | 33 ++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/src/effectivejava/chapter2/item1/StaticFactoryMethods.java b/src/effectivejava/chapter2/item1/StaticFactoryMethods.java
index 61b77190..3a05aab7 100644
--- a/src/effectivejava/chapter2/item1/StaticFactoryMethods.java
+++ b/src/effectivejava/chapter2/item1/StaticFactoryMethods.java
@@ -1,7 +1,14 @@
 package effectivejava.chapter2.item1;
 
 import java.math.BigInteger;
-import java.util.*;
+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
@@ -13,6 +20,29 @@ 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 {
@@ -20,4 +50,5 @@ enum SampleEnum {
         ENUM2,
         ENUM3;
     }
+
 }