Java Bigdecimal class example

Java bigdecimal class comes under java.math library. Class bigdecimal enhances the users limitation over rounding action on numbers by providing a set of eight rounding modes such as ROUND_CEILING, ROUND_DOWN, ROUND_FLOOR, etc.

Java Bigdecimal class example

Java bigdecimal class comes under java.math library. Class bigdecimal enhances the users limitation over rounding action on numbers by providing a set of eight rounding modes such as ROUND_CEILING, ROUND_DOWN, ROUND_FLOOR, etc.

Java Bigdecimal class example

Java Bigdecimal class example

     

Java bigdecimal class comes under java.math library. Class bigdecimal enhances the users limitation over rounding action on numbers by providing a set of eight rounding modes such as ROUND_CEILING, ROUND_DOWN, ROUND_FLOOR, etc.

Calculations done by programs on integer, rational & decimal numbers using bigdecimal class, is performed through a technique known as arbitrary-precision process in which an undetermined number of digits of precision, are involved (precision of digits of the number is often confined to the host's system memory). 

BigDecimal class provides opportunity to perform several operations such as mathematical addition, subtraction, multiplication and division. 
By the availability of a set of eight rounding modes, user's control on applying rounding feature is increased. Others features like analyzing (comparison), format alteration (change), hashing and authorization on setting scales have increased the usage of this class in building Business applications. 

Java bigdecimal class objects can be used in holding decimal values of 16(sixteen) significant digits precisely. Example below shows how to get start working with bigdecimal class. In the code First a class object is created and than a String argument is passed. This String argument in double quotes inside the bigdecimal class constructor concludes the value of the object.

The bigdecimal class is designed to solve two types of problems that are associated with floating-point numbers. First, the bigdecimal class can be used to exactly represent decimal numbers. Second, it can be used to work with numbers that have more than 16 significant digits. If you haven't ever used this class, it's one that you should master and use for many business applications.

Java_Bigdecimal_Example.java

import java.lang.Math;
import java.math.BigDecimal;
import java.text.NumberFormat;
import java.util.*;

public class Java_Bigdecimal_Example {
  public static void main(String args[]) {

  NumberFormat currency = 
  NumberFormat.getCurrencyInstance(Locale.US);

  double apple_price = 32.86426;
  System.out.print("Math class round method :"
  + currency.format(Math.round(apple_price))
  + "\n");

  // creating BigDecimal class object
  BigDecimal bigDecimal_Apple_price = 
  new BigDecimal("52.2516");
  System.out.print("java.math package BigDecimal class" +
  " methods example: \n"
  + currency.format((bigDecimal_Apple_price
  .setScale(BigDecimal.ROUND_HALF_UP))
  .floatValue()) + "\n");

  System.out.print(currency.format((
  bigDecimal_Apple_price.setScale(0,
  BigDecimal.ROUND_HALF_EVEN)).floatValue()));
  }
}

Download the code

Tutorials

  1. Java BigDecimal floatValue method example
  2. Java divide method example
  3. Java BigDecimal compareTo example
  4. Java BigInteger long
  5. Java Bigdecimal class example
  6. Java BigDecimal byteValueExact example
  7. Java BigDecimal add example
  8. Java BigDecimal abs example
  9. Java BigDecimal longValueExact example
  10. Java BigDecimal longValue example
  11. Java BigDecimal intValueExact example
  12. Java BigDecimal intValue example
  13. Java BigDecimal hashCode example
  14. Java BigDecimal equals example
  15. Java BigDecimal doubleValue example
  16. Java BigDecimal divideToIntegral method example
  17. Java BigDecimal divideToIntegral example
  18. Java BigDecimal divide examples
  19. Java BigDecimal divideAndRemainder method example
  20. Java BigDecimal divideAndRemainder example
  21. Java bigdecimal max example
  22. Java bigdecimal min example
  23. Java bigdecimal movePointLeft example
  24. Java BigDecimal movePointRight example
  25. Java bigdecimal multiply example
  26. Java bigdecimal multiply method example
  27. Java bigdecimal negate example
  28. Java bigdecimal negate method example
  29. Java bigdecimal plus example
  30. Java bigdecimal plus method example
  31. Java bigdecimal pow example
  32. Java bigdecimal pow method example
  33. Java bigdecimal precision example
  34. Java bigdecimal remainder example
  35. Java bigdecimal remainder method example
  36. Java bigdecimal round example
  37. Java bigdecimal scale example
  38. Java bigdecimal scaleByPowerOfTen example
  39. Java bigdecimal setScale example
  40. Java bigdecimal setScale method example