--%>
Assignment Help - homework help

Environment Modeling in Java Pathfinder

Environment Modeling: In JPF, Java class files can be processed in two different ways:

A) As ordinary Java classes managed and executed by the host JVM (e.g., standard Java library classes, JPF implementation classes)

B) As “modeled” classes managed and processed (verified) by JPF

We have to clearly distinguish between these two modes. In particular, JPF’s “Model” layer has its own class and object model, which is completely different than and incompatible with the hidden class and object models of the underlying host JVM executing JPF.

Each standard JVM supports a Java Native Interface (JNI), that is used to delegate execution from the JVM-controlled bytecode down into the platform-dependent native layer (machine code). This is normally used to interface certain functionalities such as I/O or graphics to the platform OS and architecture. JPF provides an analogous mechanism to lower the “execution” level in JPF from JPF-controlled bytecode into JVM-controlled bytecode. This mechanism is called Model Java Interface (MJI). It supports the creation of dedicated classes to be executed by the underlying JVM rather than JPF. Such classes are not model checked by JPF.

   Related Questions in Programming Languages

  • Q : Explain the computer process Explain

    Explain the computer process.

    		•
  • Q : Define Mixed Mode Mixed Mode : Permits

    Mixed Mode: Permits domain controllers executing both Windows 2000 and prior versions of Windows NT to co-exist in the domain. In mixed mode, the domain features from prior versions of Windows NT Server are still allowed, whereas some Windows 2000 fea

    		•
  • Q : Define Class inheritance Class

    Class inheritance: Whenever a super class is expanded through a sub class, a class inheritance relationship exists among them. The sub class inherits the attributes and methods of its super class. Class inheritance in Java, is single

    		•
  • Q : What is Signal Handler Signal Handlers:

    Signal Handlers: In some operating systems, signal handlers are executed on a thread stack; they “overlay” the current thread execution (which may be used, for example, in combination with setjmp/longjmp to create user-domain lightweight t

    		•
  • Q : Application of S60 device The

    The application has been earlier tested along with an S60 2nd Edition device and this is Symbian Signed. So can I install similar application to another S60 device?

    		•
  • Q : What is Homogeneous collection

    Homogeneous collection: A group of objects with similar dynamic type. Arrays are the most general homogeneous collection objects.

    		•
  • Q : What is Member What is Member : Members

    What is Member: Members of a class are methods, fields and nested classes.

    		•
  • Q : Generating uniform random numbers using

    In .NET, write a simple web service in C# to generate uniform random numbers. Use the class System.Random to generate the random numbers. What part of the code is specifically associated with web services? How could you deploy the web service?

    		•
  • Q : Explain Structured programming

    Structured programming: It is a style of programming generally related with languages like FORTRAN, C, Pascal and so forth. Employing structured programming methods, a problem is frequently resolved employing a divide and conquer approach like stepwis

    		•
  • Q : Explain Branch instruction Branch

    Branch instruction: It stores a new instruction address into the program counter. The consequence of this is the next instruction to be fetched will not generally be the one instantly following the branch instruction. Therefore the normal chronologica

    		•