how to get two decimal places in java

age = 21"); socket. getOutputStream (). write (sb. toString (). getBytes ()); To accept the information sent from the server, you can directly obtain it using InputStream and then process it. ye can use the formatIsToString () method mentioned below to process the result as a String type. In fact, the difference between the get method and the post method should be clear here, because the get method

The Calendar class is an abstract class that provides methods for converting between calendar fields.One important method, Getactualmaximum, is to return the actual maximum value for the specified calendar field.Using this method (Calendar.getactualmaximum), we can get the number of days of the month of the year.The code is as follows: /** * Get the maximum number of days in a month * * @param year

1. Get is the data that is fetched from the server and post is the data sent to the server. The GET request returns any information indicated by Request-uri.A Post request is used to send e-mail, news, or a form that can be filled by an interactive user. This is the only request to send the body in the request. The length of the body needs to be indicated in the message header content-length field when usin

backgroundI do Java Web Background development, often need and front-end classmate interaction, because the front background work efficiency, there will always be a time lag, before the total silly wait or poll: "Hello, the front-end written well, interactive a bit." I've been told by my brother that Firefox has a plugin that comes with a mock HTTP request, but, as a program ape, you want to write a tool class yourself by code. So, there is the httphe

Feel in the design pattern, many places have to use the reflection. In particular, read the information from the configuration file and use this information to dynamically load. The application of reflection is particularly common, where reflection and related concepts are discussed once again. Class loading mechanism for ClassLoader: L Java classes are not loaded into memory at once L is only dynamically

In order to write a Java collection program, from the online learning to 3 ways to get a single page content method, mainly to the Java IO Stream knowledge, not familiar with it, so write a summary. Import Java.io.bufferedreader;import Java.io.bytearrayoutputstream;import Java.io.ioexception;import Java.io.inputstreamreader;import Java.net.httpurlconnection;impor

Did n years of Java development has never written a website, recently scrambled to get an entrepreneur propaganda website. As everyone encountered the Chinese character set garbled problem, in order to be able to take some detours less, so here to share a simple and practical solution. 1. POST Data transfer Receive page Copy Code code as follows: Request.setcharacterencoding ("UTF-8"); Str