这是indexloc提供的服务，不要输入任何密码
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BAEL-9018 Display the last two digits of the current year #18309

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Merged
merged 1 commit into from
Feb 24, 2025
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Merged

BAEL-9018 Display the last two digits of the current year #18309

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42 changes: 42 additions & 0 deletions ...ions-5/src/test/java/com/baeldung/datetime/DisplayLastTwoDigitsOfCurrentYearUnitTest.java
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package com.baeldung.datetime;

import org.junit.Test;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.time.Year;
import java.time.format.DateTimeFormatter;
import java.util.Calendar;
import java.util.Date;

import static org.junit.Assert.assertEquals;

public class DisplayLastTwoDigitsOfCurrentYearUnitTest {

private static final String EXPECTED = Year.now().format(DateTimeFormatter.ofPattern("uu"));

@Test
public void whenUsingCalendarModulo_thenReturnsCorrectTwoDigitYear() {
int currentYear = Calendar.getInstance().get(Calendar.YEAR);
int lastTwo = currentYear % 100;
String result = (lastTwo < 10) ? "0" + lastTwo : String.valueOf(lastTwo);

assertEquals(EXPECTED, result);
}

@Test
public void whenUsingSimpleDateFormat_thenReturnsCorrectTwoDigitYear() {
DateFormat df = new SimpleDateFormat("yy");
String result = df.format(new Date());

assertEquals(EXPECTED, result);
}

@Test
public void whenUsingJavaTimeAPI_thenReturnsCorrectTwoDigitYear() {
String result = Year.now().format(DateTimeFormatter.ofPattern("uu"));

assertEquals(EXPECTED, result);
}

}