--%>
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 : Source and listener What do you mean by

    What do you mean by the term source and listener?

    		•
  • Q : Program to controls a quiz show in C++

    Foundations of Computer Science In this project, we will write a program that controls a quiz show, much like the many popular TV shows. The program will read in a group of questions and thei

    		•
  • Q : Scalability aspects of a Java PathFinder

    Scalability of program model checkers such as JPF encompasses two aspects: How large a program can be model checked, and Once a defect has been detected, how readily meaningful debugging informati

    		•
  • Q : Calculate the summation of 1 to some

    Write two programs to calculate the summation of 1 to some integer n using a function called int summation(int n) a) Using a non recursive solution, with a for(i=1, i<=n; i++) loop and b) using a recursive solution, based on the following conditions summation(n) = summation(n-1

    		•
  • Q : Explain why java is so important for

    The internet aided java to the forefront of programming. And java consequently has had a deep effect on the internet. The reason for this is highly simple: java uses the universe of objects that can travel freely in cyber space. In a network, two broad categories of

    		•
  • Q : Define Short-circuit operator

    Short-circuit operator: It is an operator in which only as a lot of operands are computed as are required to determine the final outcome of the operation. The logical-and (&&) and logical-or (||) operators are most general illustration, though

    		•
  • Q : State the term non-XML resources State

    State the term non-XML resources?

    		•
  • Q : Define the term Image map Define the

    Define the term Image map: This is an image, divided into logical regions, each of which has a hot spot.

    		•
  • Q : Illustrates the parts of an XML

    Illustrates the parts of an XML document are case-sensitive.

    		•
  • Q : Perform Exception Handling with

    On occasion, some of Brewbean’s customers mistakenly leave an item out of a basket already checked out, therefore they create a new basket containing the missing items. Though they request that the baskets be combined and hence they are not charged extra shippin

    		•