Java Development

[VimalSandy]

hi.. i need to display drop down list in my screen.. im using objectchoicefield.. i want to list of String Dynamically..  To Add list String Statically not problem. i can like this

String[ ] choice = {"hi","hello","how"," when"};

how to add this things dynamically..  pls help out

[lakshman9687]

Hi Vimal,

You can't add strings dynamically to string array, insted of that u can use StringBuffer or u can use vector.

My suggestion is use Vectors ,in that u can add or remove what ever u want....

In object choicefield  also write vector.elementAt(index).toString()..

Thanks..

Lakshman

[jitendrasharma]

You can use 

Arrays.add(Object[] arg0, Object arg1);

to add an element to an existing array.

[tklanilkumar]

take the array length and give like this
String[ ] choice = new String[length];

now you can add the Strings to that array by this

choice[array_index] = "your required string";

[VimalSandy]

Thanks for all reply ..

Lakshman9687: in vector i have objects.. how to add to object choicefield.. those objects are strings..

[tklanilkumar]

get all the elements(here Strings) of the vector and use the objectChiceField.setChoices() method to set the list.

[lakshman9687]

Hi,

Vector v = new Vector();

v.addElement();.....

ObjectChoiceField obj = new ObjectChoiceField();

        String s[] = new String[v.size()];
        for(int i =0; i < v.size(); i++)
        {
            s[i] = v.elementAt(i).toString();
        }
        obj.setChoices(s);

Like this u can add...

Thanks,

Lakshman

[VimalSandy]

Thanks for reply..
i got the solution..

public void addStringElement(String[] arr, int pos, String name){
String[] copy = new String[arr.length+2];

System.arraycopy(arr,0,copy,0,arr.length);

copy[pos] = name;
System.arraycopy(copy,0,arr,0,arr.length);


}