public static void main$($String args$[])$

$\{$

practice one $=$ new practice$()$;

practice two $=$ new practice$()$;

one.number $=8$;

two.number $=5$;

one.work$($two$.$number$)$;

System.out.println$($one$.$number $+$ two.number$)$;

$\}$

$\}$

class practice

$\{$

int number;

public void work$($int number$)$

$\{$

this.number $+=$ number;

$\}$