• html, query, parameters 1, parameters 2, whitespace

• direct variable, nested variable

switches on generic types

• classsic
  • better instanceof
  • new arrow
• java17/switches2 on enums
  • legacy if/else
  • new switch
  • colon/comma way

• sealed interface
• sealed abstract class
• final/non-sealed

• java17/records/1
  • basic records
  • instance methods
• java17/records/2
  • constructors + assertions
• java17/records/3
  • immutability
  • copy helpers
• java17/records/4
  • records in methods/helper dtos
• java17/records/5
  • records in switch statements in streams/filters (pattern matching)
• java17/switches/3
  • pattern matching with regexp
• java17/records/6
  • custom constructors

• httpclient / 1
  • basic get request
• httpclient / 2
  • websocket client

• read–eval–print loop – REPL

• show records

  record User(int id, String name) {}
  System.out.println(new User(1, "dominik"));

  • show multi line strings

     var multilinestr = """
     das ist
     ein test
     eines
     sehr langen
     textes
     """
  
     System.out.println(multilinestr);
  

  • /help intro

  • jshell --enable-preview --class-path /Users/domdorn/jsug/whatsnewinjava/target/scala-2.12/classes:/Users/domdorn/.sbt/boot/scala-2.12.14/lib/scala-library.jar
    
    com.dominikdorn.whatsnewinjava.java17.sealedclasses.SealedSample.main(new String[]{});
    

 - current process info
 - iterating on handles / pstree
 - killing processes + children
 - working with input / output of processes
   + call java process with java path/to/source/file.java

 - lines
 - strip 
 - repeat

- readString
    -> read own source code