Can a local variable be used out of a method?

Question

I\'ve got stuck in a problem about local variables.

The following is not my original code but I use a simple example to present my question:

import java.         


        

Answer 1

Why don't you just do this? :D Delcare the input1 outside the do...while loop, then it can be used in while statement.

import java.util.Scanner;
    public static void main(String[] args) {
        Scanner userScan=new Scanner(System.in);  
        int input1 = 0;
        do{
            input1=userScan.nextInt();
        }while(input1>10);
    }

Answer 2

    public static void main(String[] args) 
   {
        Scanner userScan=new Scanner(System.in);    
        int input1;
        do{
            input1=userScan.nextInt();
        }while(input1>10);
    }

just declare input1 outside of the scope of do while loop

Answer 3

The problem is with your input1 variable scope i.e., the scope of your input1 variable is limited to do while block (i.e., { } code), so just declare the variable outside the loop.

int input1 = 0;//scope is now wider, not just limited to the loop
do {
   input1=userScan.nextInt();
} while(input1>10);