<p>One of the guys I work with needs a custom control that would work like a multiline ddl since such a thing does not exist as far as we have been able to discover</p>

<p>does anyone have any ideas or have created such a thing before<br>
we have a couple ideas but they involve to much database usage  </p>

<p>We prefer that it be FREE!!!</p>

From
this thread
, there are different ways to do this:
```
```
double r = 5.1234;
System.out.println(r); // r is 5.1234

int decimalPlaces = 2;
BigDecimal bd = new BigDecimal(r);

// setScale is immutable
bd = bd.setScale(decimalPlaces, BigDecimal.ROUND_HALF_UP);
r = bd.doubleValue();

System.out.println(r); // r is 5.12
```
```
```
```
f = (float) (Math.round(n*100.0f)/100.0f);
```
```
```
```
DecimalFormat df2 = new DecimalFormat( "#,###,###,##0.00" );
double dd = 100.2397;
double dd2dec = new Double(df2.format(dd)).doubleValue();

// The value of dd2dec will be 100.24
```
```
The
DecimalFormat()
seems to be the most dynamic way to do it, and it is also very easy to understand when reading others code.