--%>
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 : Use of new operator What is the use of

    What is the use of new operator?

    		•
  • Q : Explain Redundant value Redundant value

    Redundant value: The value of a data type which has no use or meaning in a particular context. For example, negative values would be redundant a class employing integer attributes to the model assignment marks. In several applications, redundant patte

    		•
  • Q : State the term snooping State the term

    State the term snooping?

    		•
  • Q : What is Break statement Break statement

    Break statement: A statement employed to break out of a loop, switch statement or labeled block. In all situations, control continues with the statement instantly, subsequent to the containing block.

    		•
  • Q : Explain Default initial value Default

    Default initial value: It is the default value of any variable not explicitly initialized whenever it is declared. The fields of numeric primitive types contain the value zero by default, Boolean variables encompass the value false, char variables enc

    		•
  • Q : Explain Increment operator Increment

    Increment operator: The operator (++) which adds one to its operand. It consists of two forms: pre-increment (++x) and post-increment (x++). In its pre-increment form, the outcome of the expression is the value of its argument subsequent to the increm

    		•
  • Q : What is testing What is testing?

    What is testing?

    		•
  • Q : Define Thread Thread : It is a

    Thread: It is a lightweight procedure which is managed by the Java Virtual Machine (abbreviated as JVM). Support for threads is given by the Thread class in java.lang package.

    		•
  • Q : What is the way to render XForms What

    What is the way to render XForms?

    		•
  • Q : Which kernel objects is utilize for

    Which kernel objects is utilize for thread Synchronization on various processes? Answer: For thread synchronization on various processes kernel objects are utilize

    		•