以下是示例，该示例使用setSavepoint和rollback在事务教程中进行了描述。
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;
Statement stmt = 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：将自动提交设置为false。
conn.setAutoCommit(false);
//步骤5：执行查询以删除陈述
// RS示例的必需参数。
System.out.println("Creating statement...");
stmt = conn.createStatement();
//步骤6：现在列出所有可用的记录。
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7：删除ID大于104的行
// 但是在这样做之前要先保存点。
Savepoint savepoint1 = conn.setSavepoint("ROWS_DELETED_1");
System.out.println("Deleting row....");
String SQL = "DELETE FROM Employees " +
"WHERE ID = 110";
stmt.executeUpdate(SQL);
// 糟糕...我们删除了太错误的员工！
//步骤8：在保存点2之后回滚更改。
conn.rollback(savepoint1);
// 步骤9：删除ID大于104的行
// 但是在这样做之前要先保存点。
Savepoint savepoint2 = conn.setSavepoint("ROWS_DELETED_2");
System.out.println("Deleting row....");
SQL = "DELETE FROM Employees " +
"WHERE ID = 95";
stmt.executeUpdate(SQL);
//步骤10：现在列出所有可用的记录。
sql = "SELECT id, first, last, age FROM Employees";
rs = stmt.executeQuery(sql);
System.out.println("List result set for reference....");
printRs(rs);
//步骤10：清理环境
rs.close();
stmt.close();
conn.close();
}catch(SQLException se){
//处理JDBC错误
se.printStackTrace();
// 如果有错误，则回滚更改。
System.out.println("Rolling back data here....");
try{
if(conn!=null)
conn.rollback();
}catch(SQLException se2){
se2.printStackTrace();
}//结束try
}catch(Exception e){
//处理Class.forName的错误
e.printStackTrace();
}finally{
//用于关闭资源
try{
if(stmt!=null)
stmt.close();
}catch(SQLException se2){
}
try{
if(conn!=null)
conn.close();
}catch(SQLException se){
se.printStackTrace();
}
}//结束try
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: 95, Age: 20, First: Sima, Last: Chug ID: 100, Age: 18, First: Zara, Last: Ali ID: 101, Age: 25, First: Mahnaz, Last: Fatma ID: 102, Age: 30, First: Zaid, Last: Khan ID: 103, Age: 30, First: Sumit, Last: Mittal ID: 110, Age: 20, First: Sima, Last: Chug Deleting row.... Deleting row.... List result set for reference.... ID: 100, Age: 18, First: Zara, Last: Ali ID: 101, Age: 25, First: Mahnaz, Last: Fatma ID: 102, Age: 30, First: Zaid, Last: Khan ID: 103, Age: 30, First: Sumit, Last: Mittal ID: 110, Age: 20, First: Sima, Last: Chug Goodbye! C:\>