--%>
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 : Define the term Arpanet Define the term

    Define the term Arpanet: It is a network which was a forerunner of the global Internet.

    		•
  • Q : What is an Internet Service Provider

    Internet Service Provider: It is an Internet Service Provider (abbreviated as ISP) gives connections to the Internet for users who do not contain their own network. The ISP gives such user with their own IP address which enables them to interact with

    		•
  • Q : Define User Datagram Protocol User

    User Datagram Protocol: The User Datagram Protocol (abbreviated as UDP) is a set of rules which permit communication among two processes across a network. The protocol is unreliable, that means that information is not guaranteed to be

    		•
  • Q : What is Public interface Public

    Public interface: The members of a class prefixed with public access modifier. All these members are visible to each and every class in a program.

    		•
  • Q : What is an Operator Operator : It is a

    Operator: It is a symbol, like -, = or ?: taking one, two or three operands and yielding an outcome. The operators are employed in both arithmetic and Boolean expressions.

    		•
  • Q : What do you mean by java AWT What do

    What do you mean by the term java AWT? Describe in brief.

    		•
  • Q : Define Certificates Define Certificates

    Define Certificates: They are digital documents attesting to the binding of a public key to an individual or another entity. They permit verification of the claim which a given public key does in fact fit in to a given individual. The certificates hel

    		•
  • Q : What is an IP address IP address : An

    IP address: An Internet Protocol (abbreviated as IP) address for a networked computer. Presently, IP addresses comprises of 4-byte values, written in dotted decimal notation, like 129.12.0.1. In future, IP addresses will be 16-bytes long to accommodat

    		•
  • Q : Ways to select HTML Tag Instances

    Explain the different ways in order to select the HTML Tag Instances.

    		•
  • Q : Explain the Automated Software testing

    Explain the Automated Software testing life cycle.

    		•