How can I allocate memory at runtime?

Question

Hi,
I have declared a an array of objects like.
private SampeObject [] channelAccounts = null;
How can I allocate the memory at runtime(dynamically) ? I tried with
channelAccounts = new SObject(); But its giving runtime null pointer exception.
Can anyone tell me how can I allocate the memory.
Thanks,
Chinnionline

Answer 1

public class ArrayAlloExample
    public void buildArray()
        // Determine how many you want
        int howMany = 12 ;
        // Declare the array to be the size its supposed to be
        SampleObject[] sObjList = new SampleObject[howMany] ;
        // Spin through the array and load it with new objects
        for(int i=0; i<howMany; i++)
            sObjList[i] = new SampleObject() ;
class SampleObject
    private String stuff ;
    public SampleObject()
        super() ;
        doStuff() ;
    public void doStuff()
        stuff = "Put some really spiffy stuff here" ;
}This is an example of how to load an array of objects. That said, there are MUCH better ways of dealing with collections of things than with arrays.
Arrays are handy when you know how many of something you're going to have. If you don't, then I'd reccomend an ArrayList or something similar.
Hope this helps,
PS.