Two digits after decimal point in Java (four methods)

Excerpt from Http://irobot.iteye.com/blog/285537Java two decimal places (four methods) one

Long is the length of the type, how to have a decimal, is double bar
Java.text.DecimalFormat df=new Java.text.DecimalFormat ("#.##");
Double d=3.14159;
System.out.println (Df.format (d));

Two

Java.math.BigDecimal
BigDecimal bd = new BigDecimal ("3.14159265");
BD = Bd.setscale (2,BIGDECIMAL.ROUND_HALF_UP);

Three

Class test1{
public static void Main (string[] args) {
DOUBLE ret = convert (3.14159);

SYSTEM.OUT.PRINTLN (ret);
}

Static double convert (double value) {
Long L1 = Math.Round (value*100); Rounded
DOUBLE ret = l1/100.0; Note: Use 100.0 instead of 100
return ret;
}
}

Four

Double d = 13.4324;
d= ((int) (d*100))/100;

Two digits after decimal point in Java (four methods)