bytecode

There is no universal bytecode for JavaScript, but most JavaScript engines have their own bytecode. Since JavaScript files travel as source code string, they have to parse/compile source code string into bytecode at before execution. However, as we can specify a user agent type (e.g. browser type and version) in HTTP request, can't we make the server keep bytecode for each browser and respond accordingly to save some time at client? What's preventing us from taking this approach? I don't think browsers will have no problem even if some JavaScript files are given in bytecode and others in

The motivation of my question is simple: Unfortunately Oracle stopped development of Java 6 and will not provide any additional build. If Oracle will discover any security issue they will fix it only in Java 7. We have big project that developed in Java 6 and I do not have resources to convert it to Java 7. So, I want to compile the code in last build of JDK 6 (6u45) and to run it in most updated build of JDK 7. Is in this case my byte code will be open to vulnerability fixed in JDK 7? Added The example of Oracle Java SE Critical Patch Update: http://www.oracle.com/technetwork/topics/security

I generate bytecodes using ASM library and 'Max stack size' for a method is left to be calculated automatically. During runtime,i found this value (max stack size) is not correct. My source code is: ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); .... MethodType initType = MethodType.methodType(void.class, clsList); mv = cw.visitMethod(ACC_PUBLIC, "<init>", initType.toMethodDescriptorString(), null, null); mv.visitCode(); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/invoke/BaseTemplate", "<init>", "()V", false); for(int i=0; i< list.size(); i++){ mv

Say I run a Python (2.7, though I'm not sure that makes a difference here) script. Instead of terminating the script, I tab out, or somehow switch back to my editing environment. I can then modify the script and save it, but this changes nothing in the still-running script. Does Python load all source files into memory completely at launch? I am under the impression that this is how the Python interpreter works, but this contradicts my other views of the Python interpreter: I have heard that .pyc files serve as byte-code for Python's virtual machine, like .class files in Java. At the same time

I am trying to manipulate a static method. For this, Byte Buddy or any other framework can be used. There is one library that is called Pi4J that is used for controlling GPIO of Raspberry Pi. This library has a method called: GpioController gpio = GpioFactory.getInstance(); And this call is called in several places of a program that I might not have control such that I need to modify the invocation. What I would like to do is that when GpioFactory.getInstance is executed in some way detect and modify the methods of GpioController so they log that they have been called. Maybe the only solution

I have one jar file in my application's class path. At run time, I add new classes to the jar file and sometimes also modify the fields/methods of the existing classes. Currently I am using URLClassLoader to load the classes dynamically. The new classes added dynamically are loaded correctly and I am able to use them at runtime. But it fails to reload the existing classes that are modified at runtime. I read many articles which states we need to explicitly handle reloading because class once loaded will not be reloaded until all the references to the class are destroyed. Also I tried out