Answers for "java check doubles"

how to check if string is double or not in java

String decimalPattern = "([0-9]*)\\.([0-9]*)";  
String number="20.00";  
boolean match = Pattern.matches(decimalPattern, number);
System.out.println(match); //if true then decimal else not

how to compare doubles in java

private static void testBdEquality() 
{
     BigDecimal a = new BigDecimal("2.00");
     BigDecimal b = new BigDecimal("2.0");
 
     System.out.println(a.equals(b));           // false
 
     System.out.println(a.compareTo(b) == 0);   // true
}