--%>
Assignment Help - homework help

Explain Call-by-value

Call-by-value: The semantics of passing an argument to a method in which a copy of actual argument value is taken and positioned in a separate memory location, symbolized by the corresponding formal argument. As an outcome, assignment to the formal argument in a method can encompass no effect on the value stored in actual argument. This principle is frequently misunderstood in Java. This does not mean that an object referred to by an actual argument can’t be modified through the formal argument. Consider the illustration of sorting the array termed to by the variable numbers:

Arrays.sort(numbers);

The sort method will modify the order of the values stored in the object referred to by numbers. Though, it is not possible for the sort method to modify that array numbers refers to - a sorted copy, for example. Some languages give an argument passing semantics termed as call-by-reference, in which an actual argument's value might be modified. Java does not offer this, however.

   Related Questions in Programming Languages

  • Q : Define Daemon thread Daemon thread :

    Daemon thread: The daemon threads are non-user threads. They are usually employed to carry out low-priority tasks which must not take priority over the major task of the program. They can be employed to do helpful work whenever all other user threads

    		•
  • Q : Recursive Matlab function Write a

    Write a recursive Matlab function TriUVRCol that solves a virtually upper triangular system of equations accessing the matrix by column. Write another recursive Matlab function LUPivRec that recursively computes the LU decomposition of a matrix using partial pivoting.

    		•
  • Q : Define Binary search Binary search :

    Binary search: This is a search of sorted data, in which the middle place is examined first. The search continues with either the right or the left part of the data, therefore removing half the remaining search space. This procedure is repeated at eac

    		•
  • Q : Define Assembler Assembler : The

    Assembler: The program employed to translate a program which is written in assembly language into the binary form of a specific instruction set.

    		•
  • Q : Different layers in Windows Architecture

    Explain how many different layers comprise in Windows Architecture?

    		•
  • Q : What is Super type Super type : It is a

    Super type: It is a type with a child sub type. The sub-type or super-type relationship is more common than the sub-class or super-class relationship. An interface which is implemented by the class is a super type of the class. The interface which is

    		•
  • Q : Define Radio buttons Radio buttons : It

    Radio buttons: It is a group of selectable components in which merely one component might be selected. The selection of one of the group that causes the previously chosen component to be deselected.

    		•
  • Q : Define Container Abstractions Container

    Container Abstractions: Abstractions for containers (such as lists, stacks, sets, or queues) may represent just the state of a container—e.g., full or empty—and abstract away from the actual container content. The list operations also need

    		•
  • Q : Explain Information hiding Information

    Information hiding: The practice of making sure that only as much information is exposed regarding the implementation of a class as is strictly needed. Hiding needless knowledge of implementation makes it not as much of likely that other classes will

    		•
  • Q : Differences between logical and

    What are the differences between logical and physical address spaces?

    		•