Name		Name	Last commit message	Last commit date
parent directory ..
img		img
.gitignore		.gitignore
CodeSnippetInJavaDoc.java		CodeSnippetInJavaDoc.java
README.md		README.md
SimpleWebServer.java		SimpleWebServer.java
SwitchWithPatternMatchingSecondPreview.java		SwitchWithPatternMatchingSecondPreview.java
index.html		index.html

README.md

Java 18

To run each example use: java --enable-preview --source 18 <FileName.java>

Chartset UTF-8 by Default
- to see which is default: java -XshowSettings:properties -version 2>&1 | grep file.encoding
- we can change the chartset with property: -Dfile.encoding=UTF-8
- affected classes:
  - Stream Reader and Writer
  - File Reader and Writer
  - Formatter and Scanner
  - URLEncoder and URLDecoder
- the System.out and System.err will use the same charset from the terminal
  - we can see with: Console.charset()
Pattern Matching for switch (second preview)
- Minor improvements from JDK 17:
  - refined to use dominance checking that will force constant case label to appear before a guarded pattern of the same type;
  - exhaustiveness checking is now more precise with sealed hierarchies.
Code snippet in Java Doc
- was introduced the @snippet tag to help write code fragments in Java docs
- the goals is to provide a way to get this fragments (so it can be validated by other tool), enable syntax highlighting and provide better IDE support
- code snippet suports:
  - attributes (key-pair values like usage="sort")
  - ID to be referred in others snippets (through id attribute)
  - language definition (through lang attribute) - default is java
  - external files (through file attribute) - using external file to define the snippets allow us to use everything that Java supports (like comments with /** */)
- we can pass --snippet-path to javadoc tool to define the folders for external snippets
- example: