VOid(Java)

[Alvinkiang]

Does anyone Knows how to void off Something??

For example...

using array i stored 10 item with ID

int [] item=new int [10] 
item[1]=11000;
item[2]=11001;
....

when i key in the "11000" in a text field and press Enter button
something will appear on my textArea

textarea.setText("the code which i preSet");

BUT now My Question is .. How can i void off one item when i Press a void button... i dunno how to start off.. any one can help me??

[major]

Hi, can u explain a little more plz.

[Alvinkiang]

Hi, can u explain a little more plz.

ok.. no Problem... this is how my Program goes.. it reads an Xml and called out all the label buttons and function stored in it....
i hard coded 4 item currently in item:

public int [] item=new int[100];

        item[0]=11000;
	item[1]=11001;
	item[2]=11002;
	item[3]=11003;

this items stored in Items ID which represent the Stuff i have in a store....
when the ID is key into the textField....

this will be seen on the textarea..

IF (textarea.getText()=11000)
{
toAppend="Coke"
cost="0.60"          
textarea.setText(toAppend+"\n"+"cost")
}

IF (textarea.getText()=11001)
{
toAppend="Sprite"
cost="0.60"          
textarea.setText(toAppend+"\n"+"cost")
}

IF my text area i display this 2 item and i wan to void off the last one(mean to delete one) how can i do it??

[major]

okay is it a textarea where you will entere the number such as 10101 or a textfield, will you be entering the numbers in a row for example, if u wanted to add the following for coke in a textarea 010101 then for sprite 001110 will the textaraea look like this : 010101001110 or will the first number 010101 be deleted?

You will need a keylistener to listen out for key events as you type.

[Alvinkiang]

okay is it a textarea where you will entere the number such as 10101 or a textfield, will you be entering the numbers in a row for example, if u wanted to add the following for coke in a textarea 010101 then for sprite 001110 will the textaraea look like this : 010101001110 or will the first number 010101 be deleted?

You will need a keylistener to listen out for key events as you type.

thanks i manage to do it... but what i was actually doin was having a numberpad on my program which i void button...



the Problem i faced now is..

	String tex = text.getText();
		int newlineIndex = tex.lastIndexOf('\n');
		if (newlineIndex>=0) {
  		tex = tex.substring(0, newlineIndex);

} else {
  		tex = "";
}
		text.setText(tex);

by doin this.. it eats up my "\n" and i will have the next item keyed on the same line... is there any solution to this??