Java Data Type How to - Do math operation for BigDecimal








Question

We would like to know how to do math operation for BigDecimal.

Answer

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import java.math.BigDecimal;

public class Main {
  public static void main(String[] args) {
    BigDecimal decimalA = new BigDecimal("123456789012345");
    BigDecimal decimalB = new BigDecimal("10");

    decimalA = decimalA.add(decimalB);
    System.out.println("decimalA = " + decimalA);

    decimalA = decimalA.multiply(decimalB);
    System.out.println("decimalA = " + decimalA);

    decimalA = decimalA.subtract(decimalB);
    System.out.println("decimalA = " + decimalA);

    decimalA = decimalA.divide(decimalB);
    System.out.println("decimalA = " + decimalA);

    decimalA = decimalA.pow(2);
    System.out.println("decimalA = " + decimalA);

    decimalA = decimalA.negate();
    System.out.println("decimalA = " + decimalA);
  }
}

The code above generates the following result.