JDK 12

JDK 12 is the open-source reference implementation of version 12 of the Java SE Platform as specified by by JSR 386 in the Java Community Process.

JDK 12 reached General Availability on 19 March 2019. Production-ready binaries under the GPL are available from Oracle; binaries from other vendors will follow shortly.

The features and schedule of this release were proposed and tracked via the JEP Process, as amended by the JEP 2.0 proposal. The release was produced using the JDK Release Process (JEP 3).

Features

189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)

230: Microbenchmark Suite

325: Switch Expressions (Preview)

334: JVM Constants API

340: One AArch64 Port, Not Two

341: Default CDS Archives

344: Abortable Mixed Collections for G1

346: Promptly Return Unused Committed Memory from G1

Schedule

2018年12月13日 Rampdown Phase One (fork from main line)

2019年01月17日 Rampdown Phase Two

2019年02月07日 Release-Candidate Phase

2019年03月19日 General Availability

Last update: 2019年3月19日 17:06 UTC

189:	Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
230:	Microbenchmark Suite
325:	Switch Expressions (Preview)
334:	JVM Constants API
340:	One AArch64 Port, Not Two
341:	Default CDS Archives
344:	Abortable Mixed Collections for G1
346:	Promptly Return Unused Committed Memory from G1

2018年12月13日	Rampdown Phase One (fork from main line)
2019年01月17日	Rampdown Phase Two
2019年02月07日	Release-Candidate Phase
2019年03月19日	General Availability