make double two decimal format code example
Example 1: java double 2 decimal
String result = String.format("%.2f", value);
Example 2: regex validate double with 2 decimals
^(\d+(\.\d{0,2})?|\.?\d{1,2})$
Example 3: 2 decimal places print format JAVA
printf(%.2f);
Example 4: java format double no decimal places
int x = (int) y