Java 13 Features | All Java JDK 13 new features at glance | Java Beam

Text Blocks (Preview) Switch Expressions Enhancements (Preview) FileSystems.newFileSystem() Method DOM and SAX Factories with Namespace Support Reimplement the Legacy Socket API Dynamic CDS Archive ZGC: Uncommit Unused Memory Text Blocks: This is a preview feature. It allows us to create multiline strings easily. The multiline string has to be written inside a pair of triple-double quotes. The string object created using text blocks has no additional properties. It’s an easier way to create multiline strings. We can’t use text blocks to create a single-line string. The opening triple-double quotes must be followed by a line terminator. Switch Expressions Enhancements (Preview): Switch expressions were added as a preview feature in Java 12 release. It’s almost same in Java 13 except that the “break” has been replaced with “yield” to return a value from the case statement. FileSystems.newFileSystem() Method: New methods have been added to read content as a file system. Reimplement the Legacy Socket API: Socket is reimplemented in java 13 using nio package. The underlying implementation of the java.net.Socket and java.net.ServerSocket APIs have been rewritten. The new implementation, NioSocketImpl, is a drop-in replacement for PlainSocketImpl. It uses java.util.concurrent locks rather than synchronized methods. If you want to use the legacy implementation, use the java option -Djdk.net.usePlainSocketImpl. Dynamic CDS Archive: class-data sharing feature, which was introduced in Java 10. Now, the creation of CDS archive and using it is much easier. ZGC: Uncommit Unused Memory: enhanced ZGC to return unused heap memory to the operating system. The Z Garbage Collector was introduced in Java 11. It adds a short pause time before the heap memory cleanup. But, the unused memory was not being returned to the operating system. This was a concern for devices with small memory footprint such as IoT and microchips. Now, it has been enhanced to return the unused memory to the operating system. #JavaBeam #Java13NewFeatures #JavaTextBlocks #JavaSwitchExpressions #Java