Getter and setter

Question

Is it possible to use the Setter method only in java like this code?
public class GettersAndSetters {
public static void main(String[] args) {
TestSetter setter2 = new TestSetter();

setter2.setNumber(10); 
System.out.println(num);
}
}
public class TestSetter {
    private int number;
    public void setNumber(int num) {
        this.number = num;
    }
}

Answer 1

System.out.println(num); // error
This is where the getter would be used.
System.out.println(setter2.getNumber());
You can get and set the variable if it were public or package protected, without the getters/setters.
But just keep it private for encapsulation.
But yes, if you don't need to get the variable from an outside class, then you don't need a getter.

Answer 2

Thank you