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JAVA-11421 Update article - RegEx for matching Date Pattern in Java

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This commit is contained in:
anuragkumawat 2022-05-21 17:33:00 +05:30
parent 9c61c1ce39
commit d46b2d0684
3 changed files with 6 additions and 2 deletions
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2
core-java-modules/core-java-datetime-string/src/main/java/com/baeldung/regexp/datepattern/gregorian/February29thMatcher.java
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@ -7,7 +7,7 @@ import java.util.regex.Pattern;
public class February29thMatcher implements DateMatcher { public class February29thMatcher implements DateMatcher {
private static final Pattern DATE_PATTERN = Pattern.compile( private static final Pattern DATE_PATTERN = Pattern.compile(
"^((2000|2400|2800|(19|2[0-9](0[48]|[2468][048]|[13579][26])))-02-29)$"); "^((2000|2400|2800|(19|2[0-9])(0[48]|[2468][048]|[13579][26]))-02-29)$");
@Override @Override
public boolean matches(String date) { public boolean matches(String date) {

2
core-java-modules/core-java-datetime-string/src/main/java/com/baeldung/regexp/datepattern/gregorian/GregorianDateMatcher.java
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@ -7,7 +7,7 @@ import java.util.regex.Pattern;
class GregorianDateMatcher implements DateMatcher { class GregorianDateMatcher implements DateMatcher {
private static final Pattern DATE_PATTERN = Pattern.compile( private static final Pattern DATE_PATTERN = Pattern.compile(
"^((2000|2400|2800|(19|2[0-9](0[48]|[2468][048]|[13579][26])))-02-29)$" "^((2000|2400|2800|(19|2[0-9])(0[48]|[2468][048]|[13579][26]))-02-29)$"
+ "|^(((19|2[0-9])[0-9]{2})-02-(0[1-9]|1[0-9]|2[0-8]))$" + "|^(((19|2[0-9])[0-9]{2})-02-(0[1-9]|1[0-9]|2[0-8]))$"
+ "|^(((19|2[0-9])[0-9]{2})-(0[13578]|10|12)-(0[1-9]|[12][0-9]|3[01]))$" + "|^(((19|2[0-9])[0-9]{2})-(0[13578]|10|12)-(0[1-9]|[12][0-9]|3[01]))$"
+ "|^(((19|2[0-9])[0-9]{2})-(0[469]|11)-(0[1-9]|[12][0-9]|30))$"); + "|^(((19|2[0-9])[0-9]{2})-(0[469]|11)-(0[1-9]|[12][0-9]|30))$");

4
core-java-modules/core-java-datetime-string/src/test/java/com/baeldung/regexp/datepattern/gregorian/testhelper/GregorianDateTestHelper.java
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@ -37,6 +37,8 @@ public class GregorianDateTestHelper {
} }
public void assertFebruary29th() { public void assertFebruary29th() {
Assert.assertTrue(matcher.matches("1904-02-29"));
Assert.assertTrue(matcher.matches("1996-02-29"));
Assert.assertTrue(matcher.matches("2000-02-29")); Assert.assertTrue(matcher.matches("2000-02-29"));
Assert.assertTrue(matcher.matches("2400-02-29")); Assert.assertTrue(matcher.matches("2400-02-29"));
Assert.assertTrue(matcher.matches("2800-02-29")); Assert.assertTrue(matcher.matches("2800-02-29"));
@ -44,6 +46,8 @@ public class GregorianDateTestHelper {
Assert.assertTrue(matcher.matches("2024-02-29")); Assert.assertTrue(matcher.matches("2024-02-29"));
Assert.assertTrue(matcher.matches("2028-02-29")); Assert.assertTrue(matcher.matches("2028-02-29"));
Assert.assertFalse(matcher.matches("1900-02-29"));
Assert.assertFalse(matcher.matches("1999-02-29"));
Assert.assertFalse(matcher.matches("2017-02-29")); Assert.assertFalse(matcher.matches("2017-02-29"));
Assert.assertFalse(matcher.matches("2018-02-29")); Assert.assertFalse(matcher.matches("2018-02-29"));
Assert.assertFalse(matcher.matches("2019-02-29")); Assert.assertFalse(matcher.matches("2019-02-29"));