Java Runtime Environment 是做什麼的?為什麼有些軟體一定要裝它

What's new in this version:

CHANGES:

security-libs/java.security:
- SunPKCS11 Provider no longer offering SecureRandom by default
- SecureRandom.PKCS11 from the SunPKCS11 Provider is disabled by default on Solaris because the native PKCS11 implementation has poor performance and is not recommended. If your application requires SecureRandom.PKCS11, you can re-enable it by removing "SecureRandom" from the disabledMechanisms list in conf/security/sunpkcs11-solaris.cfg
- Performance improvements have also been made in the java.security.SecureRandom class. Improvements in the JDK implementation have allowed for synchronization to be removed from the java.security.SecureRandom.nextBytes(byte[] bytes) method.

BUG FIXES:
- client-libs 2d GraphicsDevice.getConfigurations() is slow taking 3 or more seconds
- client-libs 2d Xrender: Class cast exception in 2D code running an AWT regression test
- client-libs 2d java/awt/Window/WindowsLeak/WindowsLeak.java fails
- client-libs 2d Wrong glyph is displayed for a derived font
- client-libs 2d [win10] Some unicode characters do not display any more after upgrading to Windows 10
- client-libs 2d ClassCastException: sun.font.CompositeFont cannot be cast to PhysicalFont
- client-libs 2d CCE: sun.java2d.NullSurfaceData cannot be cast to sun.java2d.opengl.OGLSurfaceData
- client-libs java.awt java.awt.SplashScreen.getSize() returns incorrect size for high dpi splash screens
- client-libs java.awt:i18n Caps Lock doesn't work as expected when using Pinyin Simplified input method
- client-libs javax.accessibility [macosx] sun.lwawt.macosx.CAccessible leaks
- client-libs javax.accessibility Uninitialised memory in WinAccessBridge.cpp:1128
- client-libs javax.accessibility Jaws reads wrong values from comboboxes when no element is selected
- client-libs javax.swing Selection in JList is drawn with wrong colors in Nimbus L&F
- client-libs javax.swing javax.swing.text.html.parser.Parser parseScript incorrectly optimized
- client-libs javax.swing JComboBox prevents wheel mouse scrolling of JScrollPane
- client-libs javax.swing Personalized Windows Font Size is not taken into account in Java8u102
- client-libs javax.swing JEditorPane.createEditorKitForContentType throws NPE after 6882559
- core-libs java.lang Annotations with lambda expressions has parameter result in wrong behavior.
- core-libs java.lang.invoke MHs.Lookup.findConstructor returns handles for array classes
- core-libs java.nio (se) Selector.select(long) uses wrong timeout after EINTR (lnx)
- core-libs javax.naming LDAP "follow" throws ClassCastException with Java 8
- core-libs javax.naming com.sun.jndi.ldap.SimpleClientId produces wrong hash code
- core-libs javax.naming Non-synchronized access to shared members of com.sun.jndi.ldap.pool.Pool
- core-libs javax.script ReferenceError in 1.8.0_72
- core-libs jdk.nashorn streamline input parameter of Nashorn scripting $EXEC function
- core-libs jdk.nashorn "ant test" fails to complete on Windows when run under cygwin shell
- core-libs jdk.nashorn Negative lookahead in RegEx breaks backreference
- core-libs jdk.nashorn Simplify Nashorn's Context class loader handling
- core-libs jdk.nashorn Nashorn shebang argument handling is broken
- core-libs jdk.nashorn Regression: two tests fail on Windows with "ant test" target
- core-libs jdk.nashorn fix Nashorn shebang argument handling on Mac/Linux
- core-libs jdk.nashorn arguments are handled differently in apply for JS functions and AbstractJSObjects
- core-libs jdk.nashorn Parsing issue with automatic semicolon insertion
- core-libs jdk.nashorn Script stack trace should display function names
- core-libs jdk.nashorn JSON.stringify does not work on ScriptObjectMirror objects
- core-libs jdk.nashorn Callback parameter of any JS builtin implementation should accept any Callable
- core-libs jdk.nashorn TypeError when a java.util.Comparator object is invoked as a function
- core-libs jdk.nashorn AccessControlException is thrown on public Java class access if "script app loader" is set to null
- core-svc Tests in com/sun/jdi fails intermittently with "jdb input stream closed prematurely"
- core-svc debugger com/sun/jdi/OptionTest.java test times out again
- deploy [macosx] Java Control Panel unable to perform tasks requiring admin privileges
- deploy [macos] JVM continuously throw a NullPointerException on new MacOS 10.12
- deploy javafx FXUIToolkit.showFileChooser() fails when jre is below 7u21
- deploy javafx FXUIToolkit.showSandboxSecurityDialog fails when running jre below 7u21
- deploy javafx FXUIToolkit.showMessageDialog() fails when running jre below 7u55
- deploy webstart Add a URL scheme handler to reliably launch .jnlp files - Mac registration part
- deploy webstart Change JavawsLauncher.app to use NSTask or execv
- deploy webstart Desktop shortcut is not updated after JNLP is changed in deployment cache
- deploy webstart Allow always checkbox in security dialog when jnlp location is unknown
- deploy webstart Signed JWS application unexpectedly asks for permission to open a socket
- hotspot compiler Math.pow yields different results upon repeated calls
- hotspot compiler Need to bailout cleanly if creation of stubs fails when codecache is out of space
- hotspot compiler CastII/ConvI2L for a range check is prematurely eliminated
- hotspot compiler PPC64: unaligned Unsafe.getInt can lead to the generation of illegal instructions
- hotspot compiler Partially initialized string object created by C2's string concat optimization may escape
- hotspot gc G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
- hotspot gc Confusing message in "Current rem set statistics"
- hotspot gc allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
- hotspot gc Long response times with G1 and StringDeduplication
- hotspot gc Test gc/ergonomics/TestDynamicNumberOfGCThreads.java fails
- hotspot jvmti Crash in Method::checked_resolve_jmethod_id(_jmethodID*)
- hotspot jvmti Fix for JDK-8147451 failed: Crash in Method::checked_resolve_jmethod_id(_jmethodID*)
- hotspot runtime Null ProtectionDomain in JVM can cause NPE because principals field is not initialized to an empty array
- hotspot runtime vm/mlvm/anonloader/stress/byteMutation failed with: assert(index >=0 && index < _length) failed: symbol index overflow
- hotspot runtime ConstantPool::release_C_heap_structures not run in some circumstances
- hotspot runtime Convert an assert in ClassLoaderData to a guarantee
- hotspot runtime Zero: Better byte behaviour
- hotspot runtime SIGSEGV: Metadata::mark_on_stack
- infrastructure release_eng 8u112 template file need to be updated
- install install jdk 8u71 fails to install with no error message
- install install ent msi does not have double-click support
- javafx application-lifecycle Passing objects between JavaScript (JavaFX / WebKit) and Java causes a memory leak
- javafx base SortedList wrapping a FilteredList causes AIOOBE
- javafx controls TreeTableView's selectedItems reports include null items.
- javafx controls [TreeTableView] graphic property of TreeItem is still visible after collapsing tree
- javafx controls Enhance CustomColorDialog to have flexibility to hide 'Opacity', 'Use' and 'Save' Button
- javafx graphics Scene content shows too large on Retina display, when a regular screen attached
- javafx graphics Print jobs do not finish when using a page range
- javafx graphics javafx print jobs take 60 times longer than javax.print
- javafx graphics Generated temp files (+JXF...temp) for custom fonts not deleted on exit.
- javafx graphics changes to compile under Visual Studio 14.0
- javafx graphics Crash while running imported/w3c/canvas/2d.gradient.interpolate.overlap2.html
- javafx graphics ContextMenu shown at wrong position on Windows10 with Extended Screen
- javafx graphics Revert fix for JDK-8150181 to push it with the correct commit message
- javafx graphics JavaFX Path drawing appears to leak native memory
- javafx web Javascript Timing Events stop work on system clock changes at past
- javafx web WebView Tooltip position no longer changes in 8u60
- javafx web WebView can't alert from a timer
- javafx web Debug build is not working after new WebKit upgrade
- javafx web NullPointer exception in WebView
- javafx web SQL Server Reporting Services in WebViews shows 401
- javafx web [WebView] Icon font doesn't work if single page application will be loaded from jar
- javafx web Need to document that JavaScript to Java bindings use weak references
- javafx web Update to newer version of WebKit
- javafx web DRT crash at fast/css-generated-content/initial-letter-basic.html
- javafx web Update java-wrappers for WebKit generated classes following WebKit update
- javafx web Linux: Javascript Timing Events stop work on system clock changes at past
- javafx web Linux: libjfxwebkit.so has hard-coded path
- javafx web Char value is set as integer, not as character
- javafx web Add timestamp to WebView Keyboard Event
- javafx web Can't get file size with javascript
- javafx web the JVM for our Swing application crashes, once we login into our application server
- javafx web WebView cannot render CSS background image with SVG data
- javafx web Char value is returned as integer, not as character
- javafx web Test Case Failure in CallBackTest
- javafx web WebView can't alert from a timer
- javafx web jvm crash at javafx com.sun.webkit.WebPage.twkPrePaint (GFlag + Heap verification)
- javafx web Implement overridePreference() for DRT framework
- javafx web [WebView] Unable to tile SVG image using css background property
- javafx web WebEngine doesn't handle html5 color picker
- javafx web Assertion fails with https://html-online.com/editor/
- javafx web [Win] Timer functionality is broken after JDK-8089563
- javafx web [OS X] Compilation Issue in WebPage.cpp
- javafx web Fix compilation warnings in WebCore and JavaScriptCore
- javafx web EOFException in GZIPInputStream.readUByte while browsing
- javafx web [WebView] WebView can't display social network icons on wellsfargo.com
- javafx web General sibling selector is broken for selected input boxes in WebView
- javafx web Website weibo.com cannot be loaded
- javafx web JavaFX browser can get stuck in an infinite loop when calling path.getTotalLength()
- javafx web [Windows] JavaFX crash in WebPage.twkOpen in 8u112 when closing WebView while debugging
- javafx web Loading "https://www.windyty.com" with JavaFX WebView crashes JVM.
- other-libs corba NullPointerException in IIOPInputStream.inputClassFields
- security-libs java.security New fix for memory leak in ProtectionDomain cache
- security-libs java.security SecureRandom.nextBytes() hurts performance with small size requests
- security-libs java.security Print size of DH keysize when errors are encountered
- security-libs java.security Some methods of java.security.Security require more permissions, than necessary
- security-libs javax.crypto Ucrypto config file cannot be read when -Dfile.encoding=UTF-16 is set
- security-libs javax.crypto Improve jurisdiction policy file signing exception
- security-libs javax.crypto:pkcs11 KeyStore.load() throws an IOException with a wrong cause in case of wrong password
- security-libs javax.crypto:pkcs11 LoadKeystore.java test is failing
- security-libs javax.net.ssl Hot lock on BulkCipher.isAvailable
- security-libs javax.net.ssl Make handling of 3rd party providers more stable
- security-libs javax.security The fix for 8050402 was partially committed
- security-libs org.ietf.jgss:krb5 Relax response flags checking in sun.security.krb5.KrbKdcRep.check.
- security-libs org.ietf.jgss:krb5 Semicolon is not recognized as comment starting character (Kerberos)
- tools Native2ascii doesn't close one of the streams it opens
- tools javac Incorrect class file created when passing lambda in inner class constructor
- tools launcher Showing incorrect result while passing specific argument in the Java launcher tools
- xml jaxp Issue in XMLScanner: EXPECTED_SQUARE_BRACKET_TO_CLOSE_INTERNAL_SUBSET when skipping large DOCTYPE section with CRLF at wrong place