JDBC连接MySQL数据库实现增删查改

package com.qll.operate;

import java.sql.*;

public class OperateUser {
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/test";
String name = "root";
String password = "123456";
static Connection conn = null;
Statement st = null;
ResultSet rs = null;
String sql = null;

public void add() {
try {
sql = "insert into tuser values(60024054,'全磊磊','男',24,'广东省深圳市')";
Class.forName(driver);
conn = DriverManager.getConnection(url, name, password);
st = conn.createStatement();
st.executeUpdate(sql);
conn.close();
} catch (Exception e) {
e.printStackTrace();
}
}

public void delete() {
try {
sql = "delete from tuser where id=60024054 ";
Class.forName(driver);
conn = DriverManager.getConnection(url, name, password);
st = conn.createStatement();
st.executeUpdate(sql);
st.close();
conn.close();
} catch (Exception e) {
e.printStackTrace();
}
}

public void find() {
try {
sql = "select * from tuser";
Class.forName(driver);
conn = DriverManager.getConnection(url, name, password);
st = conn.createStatement();
rs = st.executeQuery(sql);
while (rs.next()) {
System.out.println(rs.getInt(1) + "/t" + rs.getString(2) + "/t"
+ rs.getString(3) + "/t" + rs.getInt(4) + "/t"
+ rs.getString(5));
}
rs.close();
st.close();
conn.close();
} catch (Exception e) {
e.printStackTrace();
}
}

public void update() {
try {
sql = "update tuser set id=60024410,name='李仁波',sex='女',age=24,addr='广东深圳'";
Class.forName(driver);
conn = DriverManager.getConnection(url, name, password);
st = conn.createStatement();
st.executeUpdate(sql);
st.close();
conn.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}