Java 数据库添加，修改和删除

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;

import com.mysql.jdbc.Statement;

public class JDbc {

	public static void main(String[] args) {
		Connection connection = null;
		Statement statement = null;
		
		
		try {
			Class.forName("com.mysql.jdbc.Driver");//加载Driver类
			connection = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/test02","root","root");//链接数据库
			statement = (Statement) connection.createStatement();//新建Statement接口
			
			String sql1 = "insert into tb_peo(id, name, birthday) values('5','郭珂','1999-8-10')";
			//insert into 表名（表中列名1，列名2，...） values（'',''....）
			int a = statement.executeUpdate(sql1);
			System.out.println("表中有"+a+"行被修改");
			
			String sql2 = "update tb_peo set birthday = '1999-8-11'where id = 5";
			//update 表名 set 列名 = '修改值' where  = ;
			int b = statement.executeUpdate(sql2);
			System.out.println("表中有"+b+"行被修改");
			
			String sql3 = "delete from tb_peo where id = 5";
			//delete from 表名 where = ;
			int c = statement.executeUpdate(sql3);
			System.out.println("表中有"+c+"行被修改");
			
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			try {
				statement.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			try {
				connection.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
		}
		
		}
}