Java-jdbc-oracle

JDBC编程步骤：
----java与Oracle数据的连接（lomboz_eclipse环境下）
  1.在Oracle数据库安装文件夹中找到jdbc文件夹→lib文件夹→classesl2.jar
  2.lomboz_eclipse中导入此Jar包
    导入方法：
           建立一个项目，在项目名称上右键鼠标选择Build Path→Add External Archives→
           选择classesl2.jar进行导入

  3.新建一程序编写与Oracle连接的代码
    步骤如下：
            1.实例话驱动类
          class.forName("Oracle.jdbc.driver.OracleDriver");
            2.建立到数据库的连接
          Connection conn = DriverManager.getConnection("jdbc:oracle:thin:
                            @192.168.8.1:1521:yuewei","scott","tiger");
            3.将数据发送到数据库中
          Statement stm = conn.CreatStatement();
            4.执行语句（select语句）
          ResultSet rs = stm.executeQuery(select * from dept);
            5.显示语句
          rs.getString("deptno");

完整代码如下：

import java.sql.*;

public class TestJDBC {

 public static void main(String[] args) {
  ResultSet rs = null;
  Statement stmt = null;
  Connection conn = null;
  try {
   Class.forName("oracle.jdbc.driver.OracleDriver");
   //new oracle.jdbc.driver.OracleDriver();
   conn = DriverManager.getConnection("jdbc:oracle:thin:@192.168.0.1:1521:yuewei", "scott", "tiger");
   stmt = conn.createStatement();
   rs = stmt.executeQuery("select * from dept");
   while(rs.next()) {
    System.out.println(rs.getString("deptno"));
    //System.out.println(rs.getInt("deptno"));
   }
  } catch (ClassNotFoundException e) {
   e.printStackTrace();
  } catch (SQLException e) {
   e.printStackTrace();
  } finally {
   try {
    if(rs != null) {
     rs.close();
     rs = null;
    }
    if(stmt != null) {
     stmt.close();
     stmt = null;
    }
    if(conn != null) {
     conn.close();
     conn = null;
    }
   } catch (SQLException e) {
    e.printStackTrace();
   }
  }
 }

}