simple_hua.java

java的团队合作代码

package com.jk.jdbc;
import java.sql.*;
public class simple_hua {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
          //初始化变量
		String driver = "oracle.jdbc.driver.OracleDriver";
		String url = "jdbc:oracle:thin:@10.22.78.99:1521:XE";
		String userName = "wangrh";
		String passwd = "wangrh";
		
		//定义jdbc操作的变量
		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;
		try{
			//1.register a driver
			Class.forName(driver);
			//2.get a Connection
			conn=DriverManager.getConnection(url,userName,passwd);
			//3.get Statement
			stmt=conn.createStatement();
			String sql="select id,name from test";
			//4.execute sql
			rs=stmt.executeQuery(sql);
			//5.resultSet
			while(rs.next())
			{
				System.out.print(rs.getInt(1)+" ");//rs.getInt("id")也可以
				System.out.println(rs.getString(2));
				
			}
			
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			//6.close resource
			try{
				if(rs!=null) rs.close();
				if(stmt!=null) stmt.close();
				if(conn!=null) conn.close();
			}catch(Exception e){
				e.printStackTrace();
			}
		}
		
	}

}