郭瑞丰 aliencode

##java

package com.demo;
public abstract class Service1 {
    private static Service1 getInstance() {
    	return ServiceLoader.load(Service1.class).iterator().next();
    }
}

0,000 000 000 000 000 000 000 001	yoctosecond [ ys ]
0,000 000 000 000 000 000 001	        zeptosecond [ zs ]
0,000 000 000 000 000 001	        attosecond [ as ]
0,000 000 000 000 001	                femtosecond [ fs ]
0,000 000 000 001                       [ trillionth ]	picosecond [ ps ]
0,000 000 001                           [ billionth ]	nanosecond [ ns ]
0,000 001                               [ millionth ]	microsecond [ µs ]
0,001                                   [ thousandth ]	millisecond [ ms ]
0.01 [ hundredth ]	centisecond [ cs ]

##注册一个servlet

@WebServlet(name = "captcha-servlet", value = "/getcaptcha")
public class CaptchaServlet extends HttpServlet {

}

GenericServlet要使用HttpServlet

##设定加载顺序，数字大的优先加载

<context:property-placeholder location="classpath*:/context2.properties" order="0"/>
<context:property-placeholder location="classpath*:/context.properties" order="100"/>

context2.properties将覆盖context.properties中的值。

##覆盖其它properties

  dog | bird | cat
  ----|------|----
  foo | foo  | foo
  bar | bar  | bar
  baz | baz  | baz

dog | bird | cat

	<servlet-mapping>
	<servlet-name>default</servlet-name>
	<url-pattern>/static/*</url-pattern>
	</servlet-mapping>

	textarea {
	resize: none;
	}

	/Or, if need only vertical resize:/

	textarea {
	resize: vertical;
	}

	//1000 - 9999
	Random generator = new Random();
	int id = generator.nextInt(9999) + 1000;

	//加前缀&
	getBean("&factorybeanid")

	textarea:focus, input:focus{
	outline: 0;
	}