public class NumberUtils {
private NumberUtils() {
}
public static String doubleToString(Double value) {
BigDecimal b = BigDecimal.valueOf(value).setScale(2, BigDecimal.ROUND_HALF_UP);
return b.toString();
}
}
Test:
@RunWith(JUnit4.class)
public class NumberUtilsTest {
@Test
public void testDoubleToString() {
Double d = new Double(0.33333333333333);
System.out.println(d);
System.out.println(NumberUtils.doubleToString(d));
Double test = 0.43;
System.out.println(Double.toString(test - 0.13));
System.out.println(NumberUtils.doubleToString(test - 0.13));
assertTrue(NumberUtils.doubleToString(0.455).equals("0.46"));
assertTrue(NumberUtils.doubleToString(0.454).equals("0.45"));
}
}