--%>
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 : C programming assignment help S trings,

    Strings, Pointers, Arrays, Structures, and File I/O in C In this lab you will develop a few programs that will give you some practice with pointers, arrays, str

    		•
  • Q : Define Software engineering Software

    Software engineering: It is the system of applying of an engineering discipline to the implementation, design and maintenance of the software systems.

    		•
  • Q : Explain While loop While loop: It is

    While loop: It is one of Java's three control structures employed for looping. The other two are: do loop and for loop. The while loop comprises of a Boolean expression and a loop body. The condition is tested prior to the loop body is entered for the

    		•
  • Q : Function of STR and LPSTR Explain what

     Explain what is the function of STR and LPSTR?

    		•
  • Q : Self-created What is the difference

    What is the difference among a self-created certificate, Symbian Signed and a Symbian developer certificate?

    		•
  • Q : Explain Right shift operator Right

    Right shift operator: Right shift operator (>>) is the bit manipulation operator. It shifts the bits in its left operand zero (0) or many places to the right, according to the value of its accurate operand. The most important bit from before the

    		•
  • Q : What is Filter stream Filter stream :

    Filter stream: It is an input-output class which filters or manipulates its stream of input- or output-data in some manner. Two illustrations are: DataInputStream and DataOutputStream.

    		•
  • Q : New features of ASP.NET AJAX 4.0

    Explain the new features of the ASP.NET AJAX 4.0?

    		•
  • Q : Define the term Heterogeneous collection

    Define the term Heterogeneous collection: It is a collection of objects with distinct dynamic types

    		•
  • Q : What is an Immutable object Immutable

    Immutable object: It is an object whose state might not be modified. The objects of String class are immutable, for example - their length and contents are fixed once formed.

    		•