BigDecimal Usage Sample

BigDecimalTest.java

import java.math.BigDecimal;
import java.math.RoundingMode;

public class BigDecimalTest {

    public static void main(String ... args) {
        BigDecimalTest app = new BigDecimalTest();
        app.test();
    }

    public void test() {
        BigDecimal target = new BigDecimal("12345678");
        int p;
        BigDecimal divisor;

        divisor = new BigDecimal("10000.0"); p = 4;
        System.out.printf(
                          "target: %s, precision: %d, divisor: %.1f, result: %f\n",
                          target, p, divisor, target.divide(divisor, p,RoundingMode.HALF_EVEN));

        divisor = new BigDecimal("10000.0"); p = 3;
        System.out.printf(
                          "target: %d, precision: %d, divisor: %.1f, result: %f\n",
                          target.intValue(), p, divisor, target.divide(divisor, p,RoundingMode.HALF_EVEN));

        divisor = new BigDecimal("10000.0"); p = 2;
        System.out.printf(
                          "target: %d, precision: %d, divisor: %.1f, result: %f\n",
                          target.intValue(), p, divisor, target.divide(divisor, p,RoundingMode.HALF_EVEN));

        divisor = new BigDecimal("100000.0"); p = 2;
        System.out.printf(
                          "target: %d, precision: %d, divisor: %.1f, result: %f\n",
                          target.intValue(), p, divisor, target.divide(divisor, p,RoundingMode.HALF_EVEN));

        divisor = new BigDecimal("1000000.0"); p = 2;
        System.out.printf(
                          "target: %d, precision: %d, divisor: %.1f, result: %f\n",
                          target.intValue(), p, divisor, target.divide(divisor, p,RoundingMode.HALF_EVEN));
    }
}