Question

Please explain this part of the method program for me? (simple beginner program)

Answer 1

import java.util.Scanner;
public class methods {
public static void main (String args []){

Scanner input = new Scanner (System.in);

int total = 0 , first = 0 , second = 0 ;

String operator;

System.out.print("Enter first integer:");
first= input.nextInt();

System.out.print("Enter operator");
operator=input.next();

System.out.print("Enter second integer:");
second= input.nextInt();


if (operator.equals("+")==true)
total= a(first, second);
if (operator.equals("-")==true)
total=b(first, second);
if (operator.equals("*")==true)
total=c(first, second);
if (operator.equals("/")==true)
total=d(first, second);
System.out.print("result"+total);
}


static int result=0;
static int a(int t,int y){
return result= t+y;
}
static int b(int t,int y){
return result= t-y;
}
static int c(int t,int y){
return result= t*y;
}
static int d(int x,int y){
return result= x/y;
}







}


The part I dont understand is



"


*************static int result=0;
static int a(int t,int y){
return result= t+y;
}
static int b(int t,int y){
return result= t-y;
}
static int c(int t,int y){
return result= t*y;
}
static int d(int x,int y){
return result= x/y;
}



"

Answer 2

static int result=0; ?? What is that ?? a method?? why couldnt i initialize it above??

Answer 3

It's a class variable. You can't declare it in main and then use it from your "a,b,c,d" methods.

Answer 4

global variable?

Answer 5

Nope, class variable. They're different.

Answer 6

ok thanks

Answer 7

class variable in other words is called global variable because it can be accessed in whole class