以下是使用Result Set教程中描述的ResultSet.CONCUR_UPDATABLE和ResultSet.TYPE_SCROLL_INSENSITIVE示例。本示例将说明对表的INSERT，UPDATE和DELETE操作。
应该注意的是，您正在处理的表应正确设置主键。
该示例代码是根据前几章中的环境和数据库设置编写的。
复制并粘贴以下示例到JDBCExample.java中，如下编译并运行：
//步骤1.导入所需的软件包
import java.sql.*;
public class JDBCExample {
// JDBC驱动程序名称和数据库URL
static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
static final String DB_URL = "jdbc:mysql://localhost/EMP";
// 数据库凭证
static final String USER = "username";
static final String PASS = "password";
public static void main(String[] args) {
Connection conn = null;
try{
//步骤2：注册JDBC驱动程序
Class.forName("com.mysql.jdbc.Driver");
//步骤3：建立连接
System.out.println("Connecting to database...");
conn = DriverManager.getConnection(DB_URL,USER,PASS);
//步骤4：执行查询以创建陈述
// RS示例的必需参数。
System.out.println("Creating statement...");
Statement stmt = conn.createStatement(
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
//步骤5：执行查询
String sql = "SELECT id, first, last, age FROM Employees";
ResultSet rs = stmt.executeQuery(sql);
System.out.println("List result set for reference....");
printRs(rs);
//步骤6：循环浏览结果集，并增加5个年龄
//移至BFR位置，以便while循环正常工作
rs.beforeFirst();
//步骤7：从结果集中提取数据
while(rs.next()){
//按列名检索
int newAge = rs.getInt("age") + 5;
rs.updateDouble( "age", newAge );
rs.updateRow();
}
System.out.println("List result set showing new ages...");
printRs(rs);
// 在表中插入一条记录。
//移动以使用updateXXX()插入行并添加列数据
System.out.println("Inserting a new record...");
rs.moveToInsertRow();
rs.updateInt("id",104);
rs.updateString("first","John");
rs.updateString("last","Paul");
rs.updateInt("age",40);
//提交行
rs.insertRow();
System.out.println("List result set showing new set...");
printRs(rs);
// 从表中删除第二条记录。
// 首先将位置设置为第二条记录
rs.absolute( 2 );
System.out.println("List the record before deleting...");
//按列名检索
int id = rs.getInt("id");
int age = rs.getInt("age");
String first = rs.getString("first");
String last = rs.getString("last");
//显示值
System.out.print("ID: " + id);
System.out.print(", Age: " + age);
System.out.print(", First: " + first);
System.out.println(", Last: " + last);
//删除行
rs.deleteRow();
System.out.println("List result set after \
deleting one records...");
printRs(rs);
//步骤8：清理环境
rs.close();
stmt.close();
conn.close();
}catch(SQLException se){
//处理JDBC错误
se.printStackTrace();
}catch(Exception e){
//处理Class.forName的错误
e.printStackTrace();
}finally{
//用于关闭资源
try{
if(conn!=null)
conn.close();
}catch(SQLException se){
se.printStackTrace();
}
}
System.out.println("Goodbye!");
}//结束main
public static void printRs(ResultSet rs) throws SQLException{
//确保我们从第一行开始
rs.beforeFirst();
while(rs.next()){
//按列名检索
int id = rs.getInt("id");
int age = rs.getInt("age");
String first = rs.getString("first");
String last = rs.getString("last");
//显示值
System.out.print("ID: " + id);
System.out.print(", Age: " + age);
System.out.print(", First: " + first);
System.out.println(", Last: " + last);
}
System.out.println();
}//结束printRs()
}//结束JDBCExample现在让我们编译上面的示例，如下所示：
C:\>javac JDBCExample.java C:\>
运行时JDBCExample，它将产生以下结果-
C:\>java JDBCExample Connecting to database... Creating statement... List result set for reference.... ID: 100, Age: 33, First: Zara, Last: Ali ID: 101, Age: 40, First: Mahnaz, Last: Fatma ID: 102, Age: 50, First: Zaid, Last: Khan ID: 103, Age: 45, First: Sumit, Last: Mittal List result set showing new ages... ID: 100, Age: 38, First: Zara, Last: Ali ID: 101, Age: 45, First: Mahnaz, Last: Fatma ID: 102, Age: 55, First: Zaid, Last: Khan ID: 103, Age: 50, First: Sumit, Last: Mittal Inserting a new record... List result set showing new set... ID: 100, Age: 38, First: Zara, Last: Ali ID: 101, Age: 45, First: Mahnaz, Last: Fatma ID: 102, Age: 55, First: Zaid, Last: Khan ID: 103, Age: 50, First: Sumit, Last: Mittal ID: 104, Age: 40, First: John, Last: Paul List the record before deleting... ID: 101, Age: 45, First: Mahnaz, Last: Fatma List result set after deleting one records... ID: 100, Age: 38, First: Zara, Last: Ali ID: 102, Age: 55, First: Zaid, Last: Khan ID: 103, Age: 50, First: Sumit, Last: Mittal ID: 104, Age: 40, First: John, Last: Paul Goodbye! C:\>