Java Can Variables Be Used in Variable Names

Question

I have this little script repeated below in my code a few times. I know that I could run a function to do this easily, but can I use a variable as a variable name like in PHP.

   if (4val != null && 4val.length() > 0){
            Button 4 = new Button(this);
            4.setText(4val);
            4.setTextSize(20);
        }

I want to be able to do something like

i=1;
while{i > 10}{
    $$i = value;
    //do stuff with $$i
    i++;
}

Is this possible in Java?

Is your intention to have access to those variables after the loop is done? And why wouldn't you use some sort of collection construct? — Dilum Ranatunga
– Dilum Ranatunga, Commented May 10, 2011 at 17:50

I82Much · Accepted Answer · 2011-05-10 17:48:18Z

5

No. But you can stick the buttons in an array, and then iterate through.

Button[] buttons = new Button[10];
// instantiate all the buttons
for (int i = 0; i < buttons.length; i++) {
   // update the button
}

answered May 10, 2011 at 17:48

I82Much

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Comments

Jigar Joshi · Accepted Answer · 2011-05-10 17:54:39Z

3

use Map instead

map.put("key","val");    
map.get("key");

Well you can also use array, List , but if you use HashMap you retrieval process would be almost o(1)

edited May 10, 2011 at 17:54

answered May 10, 2011 at 17:48

Jigar Joshi

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1 Comment

DJClayworth Over a year ago

The retrieval process will be almost O(1). As opposed to an actual array, when it will be actually O(1)?

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