Question

Define the missing method. use "this" to distinguish the local member from the parameter name.

Answer 1

Answer:

Explanation:

Java Code

class Students{

   private String name;

   private String rollNumber;

   public void setNameAndRollNumber(String name, String rollNumber){

       this.name = name;

       this.rollNumber = rollNumber;

   }

}

Code Explanation

In setNameAndRollNumber method there are two type variables, one is member variables which are associated with class and the second one are method parameters which are being past from external class.

If we have both variables name similar to member variables then to distinguish between member variable and parameter, we need to add "this" before member variable to let compiler know that with "this" annotation we are changing value of member variable not parameters variable.

If we don't use "this" with variable name then the compiler will give preference to parameters variable .

Answer 2

method_missing in the Ruby programming language is part of the search algorithm and is a powerful way to capture objects.

Further explanation

Method is a collection of programs that have names. Method is a means for programmers to break a program into small parts to make it more complex so that it can be used repeatedly.

Method is an operation in the form of functions that can be done by an object. The method is defined in the class but is called via the object. For example, in the pear object: there are methods to grab taste, peel, and others

The parameter is the place of storage (variable) in the function, which is used to carry out data from the caller into the function. The parameter is located between brackets (and) after the identity of the function, and a function can have several parameters separated by commas.

Types of Parameters

• Function Parameters or also referred to as Formal Parameters are local variables that are established in the function declaration (not definition), which is a repository for the values ​​of the arguments given when calling a function.
• Arguments are parameters that accompany function calls. is a place where you can provide data to be used in a function that is called and given when calling that function.

Learn More

programming method brainly.com/question/13540854

parameters and functions brainly.com/question/13540854

Details

Class: high school

Subjects: Computers and Technology

Keywords: methods, functions, parameters