mysqldeletedemo.java

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package statement;

import java.sql.*;

public class MySQLDeleteDemo {
  public MySQLDeleteDemo() {
    //定义数据库连接的驱动程序
    String driver = "org.gjt.mm.mysql.Driver";
    //定义MySQL数据库的连接地址
    String url = "jdbc:mysql://localhost:3306/EmployeeEBKC10";
    //声明连接类
    Connection conn = null;
    //employee数据表的删除SQL语句
    String deleteSql = "delete from employeeTable where employeeId = '2007010020'";
    //employee数据表的选择SQL语句
    String selectSql = "select count(*) from employeeTable";
    try {
      //使用JDBC技术创建数据库连接
      Class.forName(driver);
      //使用DriverManager类的getConnection()方法建立连接
      conn = DriverManager.getConnection(url, "root", "test");
      //通过Statement删除记录
      Statement stmt = conn.createStatement();
      int result = stmt.executeUpdate(deleteSql);
      if(result > 0){
        System.out.println("2007010020记录删除成功.");
      }
      //取得返回的记录集
      ResultSet rs = stmt.executeQuery(selectSql);
      if(rs.next()){
        System.out.println("删除后的记录总数 = " + rs.getInt(1));
      }
    }catch(Exception e){
      e.printStackTrace();
    }
  }
  public static void main(String[] args) {
    new MySQLDeleteDemo();
  }
}