README.md

Java 11 (LTS)

Oracle, OpenJDK

• LTS after Java8
• No free lts support by Oracle
• OpenJDK

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String Class

• isBlank()
• lines()
• strip()
• stripLeading
• stripTrailing
• repeat

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New File Methods

• Files.writeString()
• Files.readString()

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Collection to Array

• toArray()

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Not Predicate

• Predicate.not()

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Var in Lambda

• @Nonnull (var x) -> x.toUpperCase()

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No need to compile

previous versions:

javac Miscellaneous.java
java Miscellaneous

now:

java Miscellaneous.java

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No Op garbage collector

• Epsilon

• Experimental feature

• No-Op (No Operations)

• Usage:

  • ! Production
  • Performance testing
  • Memory Pressure testing
  • VM interface testing
  • ...

• enable:

-XX:+UnlockExperimentalVmOptions 
-XX:+UseEpsilonGC

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JFR

• Java Flight Recorder
• Profiling tool
• open sourced in OpenJDK
• commercial in Oracle JDK
• JMC (Java Mission Control)

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JavaEE and Corba

• java9: Deprecated
• java11: Removed
  • java.corba
  • java.transaction
  • java.xml.ws
  • java.xml.ws.annotation
  • java.xml.bind
  • java.activation
  • ...

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JDK, JMC, JavaFX

• standalone
• seperated
• JDK Mission Control Tutorial
• JMC 9.0.0 General-Availability Release

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