JAVA9 related APIs for new feature -16-deprecated

1. Official feature

211:elide deprecation Warnings on Import statements

214:remove GC combinations Deprecated in JDK 8

277:enhanced deprecation

289:deprecate the Applet API

291:deprecate the Concurrent Mark Sweep (CMS) Garbage Collector

2. Instructions for use

Java 9 Discards or removes several infrequently used features. The most important of these is the Applet API, which is now marked as obsolete. With the increase in security requirements, mainstream browsers have removed support for Java browser plugins. The advent of the HTML5 also accelerated its demise. Developers can now use technologies like Java Web start instead of applets, which can be used to launch applications or install applications from a browser.

At the same time, the Appletviewer tool is also marked as obsolete.

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JAVA9 related APIs for new feature -16-deprecated