Jdbc连Oracle

 

package com.ajun;
import java.sql.*;
public class jdbc
{
	String URL="jdbc oracle:thin 127.0.0.1:1521 rcl";
	String name="admin";
	String password="manager";
	Connection c=null;
	Statement conn;
	ResultSet rs=null;
public jdbc()
{
	try{
		Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
		c = DriverManager.getConnection(URL,name,password);
		conn=c.createStatement();
}catch(Exception e){
		e.printStackTrace();
}
}
public boolean executeUpdate(String sql)
{
	try
	{
		conn.executeUpdate(sql);
		return true;
	}
	catch (SQLException e)
	{
		e.printStackTrace();
		return false;
	}
}
public ResultSet executeQuery(String sql)
{
	rs=null;
	try
	{
		rs=conn.executeQuery(sql);
	}
	catch (SQLException e)
	{
		e.printStackTrace();
	}
		return rs;
}
public void close()
{
	try
	{
		conn.close();
		c.close();
	}
	catch (Exception e)
	{
		e.printStackTrace();
	}
}
public static void main(String[] args)
{
	ResultSet rs;
	jdbc conn = new jdbc();
	rs=conn.executeQuery("select * from test");
	try{
		while (rs.next())
		{
			System.out.println(rs.getString("id"));
			System.out.println(rs.getString("name"));
		}
	}catch(Exception e)
	{
		e.printStackTrace();
	}
}
}