Dynamic number of objects

[talemu]

Hi,
I have a program which accepts inputs such as latitude, longitude, towerHeight, signalPower, and frequency. I need my program to do this task.
- each time a user clicks an "Add" button, an object is created with the above field values. And I want the user to click/create objects/ as many as he want.
This is the constructor for the objects.

public OwnTxData(int latitude,int longitude,int freq, double power,double msHeight){
this.latitude = latitude;
this.longitude = longitude;
this.frequency = freq;
this.power = power;
this.msHeight = msHeight;

}

How can I allow a dynamic array of objects to be created? How shall I refer to each of the objects later? I am new to java, please help for any ideas.
Thanks in advance

[dlorde]

For a dynamic array, you can use an ArrayList. Create it something like this:

List<OwnTxData> dataList = new ArrayList<OwnTxData>();

This creates a new ArrayList to hold OwnTxData objects and assigns it to a List variable for OwnTxData objects called dataList (you can call it what you like).

To create a new OwnTxData object and insert it into the List:

// create data object
OwnTxData dataObject = new OwnTxData(latitude, longitude, freq, power, msHeight);

// add to end of list
dataList.add(dataObject);

...

// to get the first object out of the list:
OwnTxData dataObject = dataList.get(0);

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