In the Value & Reference Types course

Question

In the Value & Reference Types course (1/2) , is addOneTo(x) a FUNCTION or a VARIABLE DECLARATION ?

public class MyClass {
public static void main(String[ ] args) {
int x = 5;
addOneTo(x); // => IS THAT a FUNCTION or a VARIABLE DECLARATION ?
System.out.println(x); }
static void addOneTo(int num) {
num = num + 1;}}
// Outputs "5"

Thanks !

Answer 1

public class MyClass {
public static void main(String[ ] args) {
int x = 5;
addOneTo(x); //method call
System.out.println(x); }

static void addOneTo(int num) {
//method definition
num = num + 1;}}

//outputs 5 as its .... addOneTo(x); .... NOT .. x=addOneTo(x);
.
.
.
//have a look at my answer here also , its different , your question is fine☺👍
https://www.sololearn.com/Discuss/1570378/?ref=app

Answer 2

thanks a lot Yehoraz Levi and Gaurav Agrawal !

I m new beginner

I didn't know that you can put a method in a variable declaration . That's impressing !

Thanks a lot for your help !

Answer 3

you’r welcome just notice that it is not a method in a variable declaration (though you are able to do it), the variable declaration is the line
“int x = 5;”
but after you declar the variable you can use the method “on” it to manipulate the variable the way you want,
lets take example here:

public class Program
{
public static void main(String[] args)
{
int NewNum = 10;
HugeNum(NewNum);
int NewOther = 5;
Other(NewOther);

System.out.println(NewNum + " " + NewOther);
System.out.println(HugeNum(NewNum) + " " + NewOther);

System.out.println(NewNum + " " + HugeNum(NewNum) + " " + HugeNum(NewOther) + " " + NewOther);
}

static int HugeNum(int x)
{
x *= 30000;
return x;
}

static void Other(int x)
{
x += x;
}
}

if its hard to read here tell me i will send a link to the code itself,
as you can see the program prints both
“NewNum” and “NewOther” once on “normal status” and twice when i used the method i create to manipulate them, you can see how the methods affect the variables

Answer 4

here you can see the code and change it the way you want try diffrent things so youll understand better

https://code.sololearn.com/c1VBeN4T03pe/?ref=app

Answer 5

its a method you create, for example you can create a method called add5 that adds 5 to the number like this:

int addfive (int a)
{
a += 5;
return a;
}
for the object itself or do this:

static void addfive (int b)
{
b+=5;
}
and call the method “on the spot” like in your post for the variable