java - TimerTask alternative -

basically have 2 classes: main , population. i'm trying increase population.total 100 using population.grow() every second. population extends class can't have extend timertask.

this code population:

public class population extends anotherclass{ private int total = 0;  void grow(){  this.population = this.population + 100;  } } 

and main class:

public class main{  public static void main(string [] args){  population population = new population();  } } 

normally i'd make population extend timer perform updates this:

 timer timer = new timer();  timer.schedule(grow(), 1000); 

the problem neither main nor population can extend timer or other class need population declared inside main class. how can go doing this?

you make implement runnable , use scheduledexecutorservice.

scheduledexecutorservice scheduler = executors.newscheduledthreadpool(1); scheduler.scheduleatfixedrate(yourrunnable, 0, 1, timeunit.seconds);