Question

What is used to change the state of private field in the class?

Answer 1

Answer:

use setters and getters

Explanation:

Answer 2

Accessors And Mutators in Java

Explanation:

Accessor method

• Accessor in programming language gets the value of a private data member.  

• Accessors are commonly refereed as getters.

Syntax:

public int rollNo()  

{  

 return rollNo;  

}  

Mutator method

• Mutator method sets the value of a private data member.

• Mutators are commonly refereed as setters.  

Syntax:  

public void set rollNo(int rollNo) {  

   this.rollNo = rollNo;  

}

• The variables declared as private can not be accessed outside the class thus getter and setter methods are used.