Question: How can I take the output of a while loop and pass it to a for loop?

I get some id from my sql db using while loop. Now, how to pass each id to select query?

For example:

```
while($row = mysql_fetch_array($sql)) {
    $y= $row['c'];
} 

```

How can I pass each $y to a select query?

Answer: 
Your solution is:
private fields,
private setters,
protected or public getters (note: protected allows access from same package as well as from subclasses)
yes.. we can make a variable read-only using **final** keyword

Ex: `public final int id = 10;`