src/test/java/com/nanjing/water/DateTimeTest.java
@@ -7,14 +7,19 @@ import java.math.BigDecimal; import java.math.RoundingMode; import java.time.Duration; @RunWith(SpringJUnit4ClassRunner.class) public class DateTimeTest { @Test public void time2BCDTest() { BigDecimal a=BigDecimal.valueOf(80); BigDecimal b = BigDecimal.valueOf(60); BigDecimal bigDecimal = a.divide(b,2,BigDecimal.ROUND_HALF_UP); System.out.println(bigDecimal); int a=100; int hours=a/3600; int minutes=(a%3600)/60; int seconds=a%60; System.out.printf("%d:%02d:%02d%n", hours, minutes, seconds); } }