Java jse 6

And remote invocation, that has been largely superseded by more modern data serialisation solutions such as JSON over HTTP.Module java.se.ee – Aggregator module for the previous 6 modules.Module java.transaction – Java Transaction API (JTA).Module java.xml.bind – Java API for XML binding (JAXB)Module java.xml.ws – Java API for XML web services (JAX-WS) and related APIs (SAAJ and web services metadata)Module java.xml.ws.annotations – Common Annotations.Module jdk.xml.ws – Tools for JAX-WSModule jdk.xml.bind – Tools for JAXB.The java.corba module contained code for legacy technology which is now rarely used, and was therefore ‘dead-weight’ in the JDK for most people. The other modules provided implementations of a subset of JEE platform APIs in JSE, with the original goal of making it easier for developers to build SOAP and XML web services. They were deprecated as their inclusion in the JSE (since Java 6) had a number of ongoing drawbacks (e.g. JDK maintenance overhead and bloat; problems of unwanted dependencies between JSE and JEE; the JSE provided versions become out of date and conflicting with versions added to classpath). (For more details of these deprecations see Java SE 9 ( JSR 379) Final Release Specification > 10 APIs proposed for removal).All the above modules have now been removed from the JDK in Java 11. The removal of the CORBA module is very unlikely to affect most Java shops, however some of your apps (especially the older ones) may well consume or provide SOAP or XML based web services and depend on one of the removed JEE modules for their implementation.Whilst these modules have been removed from the JDK, they continue to be developed by the JEE community, and releases are available from public binary repos, such as Maven Central. The solution is therefore to add the extra external JARs containing the JEE APIs and their implementations to your app’s declared compile or runtime dependencies. If this entails upgrading your version of the JEE APIs, it may well be best done prior to upgrading to Java 11.For more details of these changes in Java 11 see JEP 320: Remove the Java EE and CORBA Modules.5) Oracle JDK

-cp luaj-jse-3.0.2.jar;bcel-5.2.jar lua -b fannkuch.lua 10 -n (interpreted) 12.838 23.290 36.894 15.163 java -cp luaj-jse-3.0.2.jar lua -n fannkuch.lua 10 lua 5.1.4 17.637 16.044 15.201 5.477 C lua fannkuch.lua 10 jill 1.0.1 44.512 54.630 72.172 20.779 Java kahlua 1.0 jse 22.963 63.277 68.223 21.529 Java mochalua 1.0 50.457 70.368 82.868 41.262 Java Luaj in interpreted mode performs well for the benchmarks, and even better whenthe lua-to-java-bytecode (luajc) compiler is used,and actually executes faster than C-based lua in some cases.It is also faster than Java-lua implementations Jill, Kahlua, and Mochalua for all benchmarks tested.2 - ExamplesRun a lua script in Java SEFrom the main distribution directory line type: java -cp luaj-jse-3.0.2.jar lua examples/lua/hello.luaYou should see the following output: hello, worldTo see how luaj can be used to acccess most Java API's including swing, try: java -cp luaj-jse-3.0.2.jar lua examples/lua/swingapp.luaLinks to sources: examples/lua/hello.lua examples/lua/swingapp.luaCompile lua source to lua bytecodeFrom the main distribution directory line type: java -cp luaj-jse-3.0.2.jar luac examples/lua/hello.lua java -cp luaj-jse-3.0.2.jar lua luac.outThe compiled output "luac.out" is lua bytecode and should run and produce the same result.Compile lua source or bytecode to java bytecodeLuaj can compile lua sources or binaries directly to java bytecode if the bcel library is on the class path. From the main distribution directory line type: ant bcel-lib java -cp "luaj-jse-3.0.2.jar;lib/bcel-5.2.jar" luajc -s examples/lua -d . hello.lua java -cp "luaj-jse-3.0.2.jar;." lua -l helloThe output hello.class is Java bytecode, should run and produce the same result.There is no runtime dependency on the bcel library, but the compiled classes must be in the class path at runtime, unless runtime jit-compiling via luajc and bcel are desired (see later sections).Lua scripts can also be run directly in this mode without precompiling using the lua command with the -b option and providing the bcel library in the class path: java -cp "luaj-jse-3.0.2.jar;lib/bcel-5.2.jar" lua -b examples/lua/hello.luaRun a script in a Java ApplicationA simple hello, world example in luaj is: import org.luaj.vm2.*; import org.luaj.vm2.lib.jse.*; Globals globals = JsePlatform.standardGlobals(); LuaValue chunk = globals.load("print 'hello, world'"); chunk.call(); Loading from a file is done via Globals.loadFile(): LuaValue chunk = globals.loadfile("examples/lua/hello.lua");Chunks can also be loaded from a

Reader as text source chunk = globals.load(new StringReader("print 'hello, world'"), "main.lua");or an InputStream to be loaded as text source "t", or binary lua file "b": chunk = globals.load(new FileInputSStream("examples/lua/hello.lua"), "main.lua", "bt"));A simple example may be found in examples/jse/SampleJseMain.javaYou must include the library luaj-jse-3.0.2.jar in your class path.Run a script in a MIDletFor MIDlets the JmePlatform is used instead: import org.luaj.vm2.*; import org.luaj.vm2.lib.jme.*; Globals globals = JmePlatform.standardGlobals(); LuaValue chunk = globals.loadfile("examples/lua/hello.lua"); chunk.call();The file must be a resource within within the midlet jar for the loader to find it.Any files included via require() must also be part of the midlet resources.A simple example may be found in examples/jme/SampleMIDlet.javaYou must include the library luaj-jme-3.0.2.jar in your midlet jar.An ant script to build and run the midlet is in build-midlet.xmlYou must install the wireless toolkit and define WTK_HOME for this script to work. Run a script using JSR-223 Dynamic ScriptingThe standard use of JSR-223 scripting engines may be used: ScriptEngineManager mgr = new ScriptEngineManager(); ScriptEngine e = mgr.getEngineByName("luaj"); e.put("x", 25); e.eval("y = math.sqrt(x)"); System.out.println( "y="+e.get("y") );You can also look up the engine by language "lua" or mimetypes "text/lua" or "application/lua".All standard aspects of script engines including compiled statements are supported.You must include the library luaj-jse-3.0.2.jar in your class path.A working example may be found in examples/jse/ScriptEngineSample.javaTo compile and run it using Java 1.6 or higher: javac -cp luaj-jse-3.0.2.jar examples/jse/ScriptEngineSample.java java -cp "luaj-jse-3.0.2.jar;examples/jse" ScriptEngineSampleExcluding the lua bytecode compilerBy default, the compiler is included whenever standardGlobals() or debugGlobals() are called.Without a compiler, files can still be executed, but they must be compiled elsewhere beforehand.The "luac" utility is provided in the jse jar for this purpose, or a standard lua compiler can be used.To exclude the lua-to-lua-bytecode compiler, do not call standardGlobals() or debugGlobals() but instead initialize globals with including only those libraries that are needed and omitting the line: org.luaj.vm2.compiler.LuaC.install(globals);Including the LuaJC lua-bytecode-to-Java-bytecode compilerTo compile from lua to Java bytecode for all lua loaded at runtime, install the LuaJC compiler into a globals object use: org.luaj.vm2.jse.luajc.LuaJC.install(globals);This will compile all lua bytecode into Java bytecode, regardless of if they are loaded aslua source or lua binary files.The

Distribution – Licensing, Maintenance & SecurityIf you’re currently using the “Oracle JDK” binary distribution of Java 8, then you should already know by now about the well publicised changes to the licensing of that JDK from Java 11 onwards. (If not see my previous post on the subject – Oracle’s Recent Changes to Java (JDK) – Overview, Impact & Advice),In addition, Oracle will produce the final free update to the Oracle JDK for business users in January 2019. After that time, if you remain on Oracle JDK 8, whilst it continues to be free to use in production, you’ll only be able to obtain future security updates (and any fixes) if you have a commercial license (JSE subscription) with Oracle. If security is important to you (or maybe essential for compliance), then you have two choices. You can stick with the Oracle JDK and purchase the monthly subscription from Oracle. Alternatively, switch to a free OpenJDK distribution produced by another vendor and continue to benefit from the free updates that will be made to the OpenJDK code base. If you decide to adopt the latter option, then from a planning perspective, changing your OpenJDK distribution and upgrading from Java 8 to 11 at the same time, may make sense, as for the latter you need to upgrade the JDK and regression test anyway.6) SummaryIn this post we coveredThe significance of Java 11 being a Long Term Support (LTS) release, and therefore strategically being a good release to target, e.g. if upgrading from Java 8.The small no. of new language features in Java 11 that will be of most interest to developers, including the new HTTP client (with WebSocket API support), local variable type inference syntax (var) for Lambda params; and streamline launching of single file Java program. We also covered some of the most useful enhancements to the JSE APIs in Java 11, such as new String handling methods, and convenience methods for reading/writing Strings to/from files.A couple of other features, beyond Java language enhancements, of interest to developers, such as the Flight Recorder production profiling tool now being available