GUAVA (GOOGLE Common Libraries) The best practice and optimization technique of the input/output framework

Guava (Google Common Libraares) is an open source library for Java programming language, which contains many powerful and convenient tools.Among them, Guava's Input/Output framework provides a way to simplify and optimize the input and output operation.This article will introduce the best practice and optimization technique of the Guava Input/Output framework, and will provide some Java code examples. 1. Use Guava's Input/OUTPUT tool class The Guava's Input/OUTPUT framework provides many practical tool classes to simplify and optimize input and output operations.Some of these core categories include: -FILES: It is used to process file -related operations, such as reading and writing files, copy files, mobile files, etc. -Bytesource and bytesink: Used to process the input and output operation of byte data. -CHARSOURCE and Charsink: For the input and output operation of character data. Here are some examples of using Guava Input/OUTPUT tools: Read the content of the file: try { String content = Files.asCharSource(new File("file.txt"), Charset.defaultCharset()).read(); System.out.println(content); } catch (IOException e) { // Treatment abnormalities } Write content to file: try { Files.asCharSink(new File("file.txt"), Charset.defaultCharset()).write("Hello, Guava!"); } catch (IOException e) { // Treatment abnormalities } 2. Optimize IO operation When IO operations are used to operate with the Input/OUTPUT framework of Guava, some optimization techniques can be adopted to improve performance and reliability. -Add using a buffer IO operation: Guava's input/output framework provides a buffer reading and writing method, such as using Bytesource and Bytesink's `Asbytesource ()` and `Asbytesink () method to read and write byte data.This can reduce the number of IO operations and improve performance. -Add using character set code: When input and output operation of character data, you can use the character set to specify the encoding method, such as using the `charset.defaultCharset ()` to get the default character set.This can ensure that coding compatibility on different platforms and improve reliability. -The use Try-With-Resources: When using the IO operation of the Input/Output framework of Guava for IO, you can use the TRY-WITH-Resources syntax introduced by Java 7 to automatically close the resources to avoid resources leakage and memory leakage. Below is an example code that uses buffer IO operations and character sets specified codes: try { String content = Files.asCharSource(new File("file.txt"), Charset.forName("UTF-8")).read(); System.out.println(content); } catch (IOException e) { // Treatment abnormalities } try { Files.asCharSink(new File("file.txt"), Charset.forName("UTF-8")).write("Hello, Guava!"); } catch (IOException e) { // Treatment abnormalities } In summary, Guava's INPUT/OUTPUT framework provides a way to simplify and optimize the input and output operation.By using the Guava's Input/OUTPUT tool class and some optimization techniques, the performance and reliability of IO operations can be improved.I hope the content of this article will be helpful to you.