Several methods are listed in this article:
1. Usejava.math.BigDecimal
2. Usejava.text.DecimalFormat
3. Usejava.text.NumberFormat
4. Usejava.util.Formatter
5. UseString.format
The end of the article to share more expansion of knowledge,
1, the definition of embedded system
(1) Definition: application-centric, computer-based, software and hardware can be cut to adapt to the application system to function, reliability, cost, volume, power consumption requirements of the dedicated
Application of DSP in synchronous AC sampling of Power System
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With the rapid development of China's power industry, the power system has higher requirements for the
Computer overviewThe basic composition of the computer:
memory : A memory-enabled component used to store computational programs and various data involved in the operation
arithmetic and logic operation of data: processing of data
%1 $ s indicates that the first replacement location is placed as a string type such as System.out.println (String.Format ("%1 $ s Hello%2$s", "XXX", "!")); The output is "XXX Hello!" String.Format after the first argument is an expression, can be
String. format is a new static method in JDK1.5, which has powerful functions. Its main function is to format data, which is roughly divided into these classes (general type, character type, numeric type, date type ). Its syntax is as follows:
(1) template + Data Model = Output
FreeMarker is based on the idea that designers and programmers are different individuals with different professional skills. They are Labor Division:Designers focus on representation-creating HTML files, images,
Token % 1 $ s for similar issues
% 1 $ s indicates that the first replacement position is placed as a string in the System. out. println (String. format ("% 1 $ s Hello % 2 $ s", "XX ","! "). The output is" Hello !" String. the first parameter after
The second piece records the code.Encoding: A set of n-bit binary codes used to represent different numbers or other events, called an encoding.Code word: A specific n-bit combination of the exact meaning, called the code word.In short, it is
Final Preview
Let's look at the final preview effect
The first step: what does the binary mean?
Everyone knows how to count, but not everyone knows how many different methods there are. Now we're going to use a very special method called the
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