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BAEL-9448 Convert Integer Minutes into String "hh:mm" in Java #18852

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Merged
merged 3 commits into from
Oct 11, 2025
+14 −6
Merged

BAEL-9448 Convert Integer Minutes into String "hh:mm" in Java #18852

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2879505
Update FormatDurationUnitTest.java
dvohra09 Oct 9, 2025
d5b7b64
Update FormatDurationUnitTest.java
dvohra09 Oct 9, 2025
672389e
Update FormatDurationUnitTest.java
dvohra09 Oct 11, 2025
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20 changes: 14 additions & 6 deletions ...a-datetime-string-2/src/test/java/com/baeldung/formatduration/FormatDurationUnitTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ public class FormatDurationUnitTest {


@Test
public void givenInterval_WhenFormatInterval_formatDuration() {
public void givenInterval_whenFormatInterval_thenFormatDuration() {
long HH = TimeUnit.MILLISECONDS.toHours(38114000);
long MM = TimeUnit.MILLISECONDS.toMinutes(38114000) % 60;
long SS = TimeUnit.MILLISECONDS.toSeconds(38114000) % 60;
Expand All @@ -23,7 +23,16 @@ public void givenInterval_WhenFormatInterval_formatDuration() {
}

@Test
public void givenInterval_WhenFormatUsingDuration_formatDuration() {
public void givenIntMinutes_whenConvertUsingTimeUnit_thenFormatHHMM() {
int totalMinutes = 155;
long hours = TimeUnit.MINUTES.toHours(totalMinutes);
long remainingMinutes = totalMinutes - TimeUnit.HOURS.toMinutes(hours);
String timeInHHMM = String.format("%02d:%02d", hours, remainingMinutes);
assertThat(timeInHHMM).isEqualTo("02:35");
}

@Test
public void givenInterval_whenFormatUsingDuration_thenFormatDuration() {
Duration duration = Duration.ofMillis(38114000);
long seconds = duration.getSeconds();
long HH = seconds / 3600;
Expand All @@ -32,16 +41,15 @@ public void givenInterval_WhenFormatUsingDuration_formatDuration() {
String timeInHHMMSS = String.format("%02d:%02d:%02d", HH, MM, SS);
assertThat(timeInHHMMSS).isEqualTo("10:35:14");
}



@Test
public void givenInterval_WhenFormatDurationUsingApacheCommons_formatDuration() {
public void givenInterval_whenFormatDurationUsingApacheCommons_thenFormatDuration() {
assertThat(DurationFormatUtils.formatDuration(38114000, "HH:mm:ss"))
.isEqualTo("10:35:14");
}

@Test
public void givenInterval_WhenFormatDurationUsingJodaTime_formatDuration() {
public void givenInterval_whenFormatDurationUsingJodaTime_thenFormatDuration() {
org.joda.time.Duration duration = new org.joda.time.Duration(38114000);
Period period = duration.toPeriod();
long HH = period.getHours();
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