注：方法一中ps.close()不可注掉；jar包加入：Java Build Path-libraries-add

package aa;
import java.sql.*;
public class gold1{static Connection con = null;static PreparedStatement ps = null;static ResultSet rs = null;public static void main(String[] args) {try{con = getConnection();                 Statement stmt=con.createStatement();//创建SQL命令对象      //创建表String query="create table TABLE1(ID NCHAR(2),NAME NCHAR(10))";//创建表SQL语句stmt.executeUpdate(query);//执行SQL命令对象System.out.println("表创建成功");//输入数据System.out.println("开始插入数据");String a1="INSERT INTO TABLE1 VALUES('1','旭哥')";//插入数据SQL语句String a2="INSERT INTO TABLE1 VALUES('2','伟哥')";String a3="INSERT INTO TABLE1 VALUES('3','张哥')";stmt.executeUpdate(a1);//执行SQL命令对象
            stmt.executeUpdate(a2);   stmt.executeUpdate(a3);System.out.println("插入数据成功");          /*//方法一：读取数据System.out.println("开始读取数据");String sql = "select * from TABLE1";        ps = con.prepareStatement(sql);            rs = ps.executeQuery();while (rs.next()) {                System.out.println(rs.getString(1)+rs.getString(2));                }System.out.println("读取完毕"); */          // 方法二：读取数据System.out.println("开始读取数据");String sql = "select * from TABLE1";rs=stmt.executeQuery(sql);//返回SQL语句查询结果集(集合)//循环输出每一条记录while(rs.next()) {System.out.println(rs.getString("ID")+"\t"+rs.getString("NAME"));//输出每个字段
            }System.out.println("读取完毕");        } catch (SQLException e) {            e.printStackTrace();System.out.println("数据库连接错误");System.exit(0);} finally {try {rs.close();//ps.close();
                con.close();System.out.println("ok");} catch (SQLException e) {            e.printStackTrace();}}}static final String DRIVER = "com.microsoft.sqlserver.jdbc.SQLServerDriver";static final String URL = "jdbc:sqlserver://localhost:1433;databaseName=JXGL";static final String USER = "sa";static final String PWD = "123456";public static Connection getConnection() {try {Class.forName(DRIVER);con = DriverManager.getConnection(URL, USER, PWD);System.out.println("连接数据库成功");} catch(ClassNotFoundException e) {//e.printStackTrace();System.out.println("加载数据库引擎失败");System.exit(0);   } catch (SQLException e) {e.printStackTrace();}System.out.println("数据库驱动成功");return con;}
}