¡@
java Programming Glossary: compilerUnsupported major.minor version 51.0 http://stackoverflow.com/questions/10382929/unsupported-major-minor-version-51-0 version Java JRE or specify target parameter to the Java compiler to instruct the compiler to create code compatible with earlier.. target parameter to the Java compiler to instruct the compiler to create code compatible with earlier Java versions. For example.. source 1.4 HelloWorld.java With newer versions of Java compiler you are likely to get a warning about bootstrap class path not..
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array Initially I thought this might be just a language or compiler anomaly. So I tried it in Java import java.util.Arrays import.. random hard to predict So what can be done If the compiler isn't able to optimize the branch into a conditional move you.. interchange . This goes to show that even mature modern compilers can vary wildly in their ability to optimize code... share..
StringBuilder vs String concatenation in toString() in Java http://stackoverflow.com/questions/1532461/stringbuilder-vs-string-concatenation-in-tostring-in-java Version 1 is preferable because it is shorter and the compiler will in fact turn it into version 2 no performance difference.. you're concatenating in a loop that's usually when the compiler can't substitute StringBuilder by itself. share improve this..
What is a Null Pointer Exception? http://stackoverflow.com/questions/218384/what-is-a-null-pointer-exception get a NullPointerException. In the most trivial cases the compiler will catch the problem and let you know that num may not have..
What is a raw type and why shouldn't we use it? http://stackoverflow.com/questions/2770321/what-is-a-raw-type-and-why-shouldnt-we-use-it . Even better though is NOT to use a raw type and let the compiler does all the work for you harnessing the power of Java generics... generic type checking while the latter explicitly told the compiler that it is capable of holding objects of any type. While you.. is not a List Object so the following would generate a compiler warning List String names new ArrayList String appendNewObject..
What is a serialVersionUID and why should I use it? http://stackoverflow.com/questions/285793/what-is-a-serialversionuid-and-why-should-i-use-it sensitive to class details that may vary depending on compiler implementations and can thus result in unexpected InvalidClassExceptions.. a consistent serialVersionUID value across different java compiler implementations a serializable class must declare an explicit..
Switch Statement with Strings in Java http://stackoverflow.com/questions/338206/switch-statement-with-strings-in-java This uses the static valueOf method generated by the compiler on every enum type. For example Pill p Pill.valueOf str switch..
How do I write a correct micro-benchmark in Java? http://stackoverflow.com/questions/504103/how-do-i-write-a-correct-micro-benchmark-in-java verbose gc etc. so you can verify that the compiler and other parts of the JVM are not doing unexpected work during.. path for the first time in the timing phase because the compiler may junk and recompile the code based on an earlier optimistic.. such effects. Rule 6 Use appropriate tools to read the compiler's mind and expect to be surprised by the code it produces. Inspect..
How can I compile and deploy a java class at runtime? http://stackoverflow.com/questions/1064259/how-can-i-compile-and-deploy-a-java-class-at-runtime
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array conditional moves for this branch even under Ox . Intel Compiler 11 does something miraculous. It interchanges the two loops.. test loop to defeat the benchmark... If you give the Intel Compiler the branchless code it just out right vectorizes it... and is..
Strange Java null behavior in Method Overloading [duplicate] http://stackoverflow.com/questions/14789478/strange-java-null-behavior-in-method-overloading . So compiler decides to invoke that method. Remember Compiler always chooses the most specific method to invoke. See Section..
Java user.home is being set to %userprofile% and not being resolved http://stackoverflow.com/questions/2134338/java-user-home-is-being-set-to-userprofile-and-not-being-resolved 50.0 sun.management.compiler HotSpot Client Compiler os.version 6.1 user.home userprofile user.timezone java.awt.printerjob..
java.lang.UnsupportedClassVersionError: Bad version number in .class file? http://stackoverflow.com/questions/2466828/java-lang-unsupportedclassversionerror-bad-version-number-in-class-file check the Project Properties usually Alt Enter Java Compiler section. Here's an image of a project configured to compile..
bug with varargs and overloading? http://stackoverflow.com/questions/2521293/bug-with-varargs-and-overloading are finding it difficult it's the compiler. thoughts EDIT Compiler Sun jdk 1.6.0 u18 java overloading varargs share improve..
how do I get eclipse to use a different compiler version for Java? http://stackoverflow.com/questions/2540548/how-do-i-get-eclipse-to-use-a-different-compiler-version-for-java this question From the menu bar Project Properties Java Compiler Enable project specific settings checked Uncheck use Compliance..
What is the difference between javac and the Eclipse compiler? http://stackoverflow.com/questions/3061654/what-is-the-difference-between-javac-and-the-eclipse-compiler Eclipse has implemented its own compiler called as Eclipse Compiler for Java ECJ . It is different from the javac the compiler that.. compile JSPs IntelliJ IDEA has support for ECJ as of GNU Compiler for Java GCJ 4.3 GCJ integrates with ECJ Liferay builds with..
Why are local variables not initialized in Java? http://stackoverflow.com/questions/415687/why-are-local-variables-not-initialized-in-java ... so new SomeObject so.DoUsefulThings finally so.CleanUp Compiler error here The commenter's complaint is that the compiler balks..
On-the-fly, in-memory java code compilation for Java 5 and Java 6 http://stackoverflow.com/questions/616532/on-the-fly-in-memory-java-code-compilation-for-java-5-and-java-6 I looked over existing implementations Most rely on Java 6 Compiler API. Those that don't rely on tricks. Yes I checked out commons..
How a AST for an object oriented programming language would look like? http://stackoverflow.com/questions/6376662/how-a-ast-for-an-object-oriented-programming-language-would-look-like of an AST is described by Apple in his book Modern Compiler Implementation in Java . Resources can be found here . Using..
Why won't this generic java code compile? http://stackoverflow.com/questions/662191/why-wont-this-generic-java-code-compile MyClass fail new MyClass String s3 fail.getMap .get Compiler error why I get this compiler error. MyClass.java 20 incompatible.. required java.lang.String String s3 fail.getMap .get Compiler error java generics share improve this question Got it...
http://stackoverflow.com/questions/7637144/android-requires-compiler-compliance-level-5-0-or-6-0-found-1-7-instead-plea right click on your project and select Properties Java Compiler check Enable project specific settings and select 1.5 or 1.6.. project specific settings and select 1.5 or 1.6 from Compiler compliance settings select box. share improve this answer..
http://stackoverflow.com/questions/935175/convert-string-to-code question If you are using Java 6 you could try the Java Compiler API. At its core is the JavaCompiler class. You should be able.. could try the Java Compiler API. At its core is the JavaCompiler class. You should be able to construct the source code for your.. I have not actually tried the code below as the JavaCompiler object is not available on my platform for some odd reason.....
Why does Eclipse complain about @Override on interface methods? http://stackoverflow.com/questions/987973/why-does-eclipse-complain-about-override-on-interface-methods Open the Window Preferences dialog and browse to Java Compiler. There you can set the Compiler compliance level to 1.6. Remember.. dialog and browse to Java Compiler. There you can set the Compiler compliance level to 1.6. Remember that Eclipse can override..
|