How to getters and setters work in java

Question

I am a beginner in java. Can you explain what is getter and setter?

Answer 1

In Java, getter and setter are two conventional methods that are used for retrieving and updating the value of a variable.

The following code is an example of a class with a private variable and few getter/setter methods:

public class GetterAndSetter

 {
    private int num;
 
    public int getNumber()

   {
        return this.num;
    }
 
    public void setNumber(int number)

  {
        this.num = number;
   }
}