--%>
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 : Write a program and estimate pi using

    Consider a dartboard of radius 1. Since the area of the board will be  π r2 = π * 1 *1, it's clear the area of the dartboard is exactly π. The area of a square surrounding the board (circumscribing it) would be 2*2 = 4, sin

    		•
  • Q : What is Octal character constant Octal

    Octal character constant: It is a character constant in the form of \ddd, where each d is an octal digit. This might be employed for characters with a Unicode value in the range of 0 to 255.

    		•
  • Q : Who developed Extensible Hyper-Text

    Who developed Extensible Hyper-Text Markup Language? Answer: XHTML (Extensible Hyper-Text Markup Language) was developed by W3C HTML Working Group along with Steven

    		•
  • Q : What are ORB-IOR-a servant-a POA manager

    In CORBA, what are i) an ORB ii) an IOR iii) a servant iv) a POA and v) a POA manager?

    		•
  • Q : Interface accessibility modifier Inside

    Inside the interface accessibility modifier we can use for methods?

    		•
  • Q : What is MIME MIME : Multipurpose

    MIME: Multipurpose Internet Mail Extensions (abbreviated as MIME) are rules which make it possible to utilize electronic mail to send content other than the simple text.

    		•
  • Q : Define the reasons of Process Handle

    Define the reasons of Process Handle Table.

    		•
  • Q : Explain Declaration and initialization

    Declaration and initialization: It is a statement in which a variable is declared and instantly given its initial value. Three illustrations of declaration and initialization are as follows:     int

    		•
  • Q : Different layers in Windows Architecture

    Explain how many different layers comprise in Windows Architecture?

    		•
  • Q : Define Number of Threads Number of

    Number of Threads: Threads can be a useful abstraction and implementation mechanism to partition independent program actions. However, when there is coordination (or interference) between these threads, the required synchronization mechanisms increase

    		•