--%>
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 : What is u-area Explain what is meant by

    Explain what is meant by the term u-area (user area)?

    		•
  • Q : Define Applet Applet : The Applets are

    Applet: The Applets are Java programs based on the Applet or JApplet classes. They are closely related with the capability to give active content within the Web pages. They have numerous features that differentiate them from ordinary Java graphical ap

    		•
  • Q : Homework Assignment How much would it

    How much would it cost to do a basic program within the given requirements?

    		•
  • Q : What is an Anonymous array Anonymous

    Anonymous array: It is an array formed without an identifier. The anonymous array is generally formed as an actual argument, for example:// generate an anonymous array of integers.    YearlyRainfall y2k = new YearlyRai

    		•
  • 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 : Explain Base type Base type : The kind

    Base type: The kind of items that might be stored in an array - the arrays defined type. For example, in     int[] numbers; the base type

    		•
  • Q : Define the term Blank final variable

    Blank final variable: A final variable which is not initialized as portion of its declaration. This variable should be initialized in either an instance initialization block or every of the constructors for its class before it is employed. A static bl

    		•
  • Q : What are Relational operators

    Relational operators: Operators, like <, >, <=, >=, == and!=, which produce a Boolean outcome, as portion of a Boolean expression.

    		•
  • Q : How class can be prevented from

    How class can be prevented from inheriting further?

    		•
  • Q : Explain the term Test Fusion Report of

    Explain the term Test Fusion Report of QTP?

    		•