java，

java，

private static LinkedList<Connection> pool=new LinkedList<Connection>();
	private static String driverClassName="com.mysql.jdbc.Driver";
	private static String url="mysql:jdbc://localhost:3306/jdbc";
	private static String username="root";
	private static String password="1111";
	
	static{
		// 加载驱动
		try {
			Class.forName(driverClassName);
			for(int i=0;i<10;i++){
				Connection conn=DriverManager.getConnection(url, username, password);
				pool.add(conn);
			}
		} catch (Exception e) {
			// TODO Auto-generated catch block
			throw new ExceptionInInitializerError(e);
		}
	}
	public synchronized static Connection getConnection(){
		return pool.removeFirst();//返回被删除的
	}
	public static void release(Connection conn){
		pool.addLast(conn);
	}