What are Getters and Setters?
I'm new to Java and I want to understand the terminology. Perhaps I already use it, but I do not know that it is called that way. I'll give you an example as I understand it, if I'm wrong, please correct it. Getter example:
viod Sum(int a, int b){
int s=a+b;
return s;
}
Example of a setter:
static void TxtHP(String name1, String name2){
System.out.println(nameA1 + " любит " +name2);
}
3 answers
Your examples are not the same at all. These are not getters or setters - they are from another planet altogether.
A getter is a method that returns the value of a certain class property, and a setter, respectively, is what sets the class property. Example:
public class MyClass {
private String name; //свойство
public String getName() { //геттер
return this.name;
}
public void setName(String name) { //сеттер
this.name=name;
}
}
There is a naming convention - a naming convention according to which the getter should be called: get<Свойство>(), and the setter set<Свойство>
Update
According to the specified naming convention, the so-called Java Beans, and there are so many already installed on these beans, for example POJO - so naming here is not just a fad, but a means of survival.
Update2
Returning to the question naming convention for Boolean properties, the naming of getters is accepted: boolean is<свойство>(), not boolean get<свойство>(), in addition, there are indexed properties (or properties in the form of arrays), for which there are 4 types getters/setters:
Foo[] getFoo();
Foo getFoo(int );
void setFoo(Foo[] );
void setFoo(int, Foo);
Getter allows you to get values (read values), and setter allows you to write values to a variable. In the code, they are ordinary methods. But the method name always starts with the get or set prefix.
class someClass(){
private int a;
public int getA(){
return a;
}
public void setA(int a){
this.a = a
}
}
Getters and Setters this is one of the whales of OOP, namely encapsulation. They are used to gain access to private properties. Read here for full understanding.