How do I edit a variable that's in a different class

Question

so I have 2 classes. let's call one Main and one Sub. Main Class

 public static boolean variable; public static main(){ variable = false; sub(); while(variable == false){ //pause for 1 millisecond try { TimeUnit.MILLISECONDS.sleep(1); } catch (InterruptedException ex) { Logger.getLogger(mainGUI.class.getName()).log(Level.SEVERE, null, ex); }catch(Exception s){ JOptionPane.showMessageDialog(null, "Unexpected exception:" + s); } } System.out.println("compleate"); }

Sub Class

import package.Main; public static sub(){ //wait for 3 seconds try { TimeUnit.MILLISECONDS.sleep(3000); } catch (InterruptedException ex) { Logger.getLogger(mainGUI.class.getName()).log(Level.SEVERE, null, ex); }catch(Exception s){ JOptionPane.showMessageDialog(null, "Unexpected exception:" + s); } Main.varaible = true; }

I need a way to edit variables from Sub so that my program can continue.

I have tried the above Sub class but I don't think that works (i have tried testing this, and it didn't work but it was in a big program with a lot going on, so I am not sure that there wasn't another problem)

yes, I have tried, but it was in a big program and I am not entirely sure that the problem is not elsewhere. — hutonahill
– hutonahill, Commented Apr 30, 2020 at 0:47
What kind of variable? Instance or Static? Public or Private? — PM 77-1
– PM 77-1, Commented Apr 30, 2020 at 0:49
Normally, if a class allows modification of it's instance variables, it exposes getter and setter methods. — PM 77-1
– PM 77-1, Commented Apr 30, 2020 at 0:51

GoncaloNGT · Accepted Answer · 2020-04-30 00:59:09Z

You could access the variable in main if it is a public field on the class. What you have right now is a variable defined inside the scope of a function, you can't access it outside of the function

Collectives™ on Stack Overflow

How do I edit a variable that's in a different class

1 Answer 1

Comments

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Related