How to do an array of timers in java

Question

I know I am probably way off here, but I am trying to create a timer array so that mytimer[0] mytimer[1], mytimer[2], etc... all fire off at a different interval, with diffrerent events sent to a server. Any ideas? The for loop value of 6 is an organic number for testing purposes only. This number would later be decided base on a setting from the program's xml file. ``` Timer mytimers[] = new Timer[6]; for(int i = 0;i < 6;i++){ final int mytime = i; mytimers[i].scheduleAtFixedRate(new TimerTask() { @Override public void run() { //do action sendData("Timer " + mytime + " fired"); } }, 10000, i*1000); } ```

Accepted Answer

```
Timer mytimers[] = new Timer(); 
```

I'm assuming this is the line that doesn't work? You can't initialize an array with an object; initialize it with an array:

```
Timer mytimers[] = new Timer[6];
```

Making another guess, you're also not initializing the individual timers:

```
mytimers[i].scheduleAtFixedRate(new TimerTask() {
```

At this point mytimers[i] isn't set to anything, so how can you call `scheduleAtFixedRate` on it? Initialize it first:

```
mytimers[i] = new Timer();
mytimers[i].scheduleAtFixedRate(new TimerTask() {
```

EDIT:

Your "IllegalArgumentException: Non-positive period." is because on the first time through the loop, `i = 0`, so `i * 1000 = 0`, and the period can't be 0 ("run this event every 0 zero seconds").

Start with `i = 1` and it should be fine.

How to do an array of timers in java

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