Class, void method()

Question

int method();

string method();

void method(); ect...

does the method have to have a return type in class?

im trying to inderstand void method() in class i notice it always seems to have a output in the head which you can call from the body... does it always have to be like this?

Answer 1

It is necessary to always have a return type on a method. There are some exceptions, such as constructors.

void is a return type.
It means this method does not return a value.

If you want, you can still use the return statement to change the flow of the program.

Example/

boolean isDead;

void attack(){
if(isDead)
return; // return is used

move();
fight();
}

But what does it mean to 'not return a value'?

Compare these methods:

void add(int x, int y){
int c = x + y;
}

int add(int x, int y){
return x + y;
}

int d = add(5, 4);
If this were for the int method, this would be fine. Since the value returned would be 5 + 4.
In other words, I'm assigning d to the value of add(5, 4)

If this were to be for the void method however, it would result in an error. As void does not return a value. What would it mean to assign the value of a variable to a method that has no value?
I would need to write:
add(5, 4);
To change the flow of the program and to do whatever operations in that method I want with c.

Answer 2

Hey David! How are you today?

No, not necessary to always have a return type. You can print the values to command prompt.

void somemethod()
print("value "+x );

Answer 3

faith that was explained really well thanks