regex101: java判断时间的合法性

Pro

Group 1((((([1-9][0-9]((0[48])|([13579][26])|([2468][048])))|(([1-9]((0[48])|([13579][26])|([2468][048]))))|(([13579][26])|([2468][048]))|([48]))|(((([13579][26])|([2468][048]))|[48])00))\/2\/(([1-9])|(1[0-9])|([2][0-9])))|(([1-9][0-9]{0,3})\/((([13578]|1[02])\/([1-9]|[12][0-9]|3[01]))|((([469]|11)\/([1-9]|([12][0-9])|(30)))|(2\/(([1-9])|(1[0-9])|([2][0-8])))))))

1st Alternative(((([1-9][0-9]((0[48])|([13579][26])|([2468][048])))|(([1-9]((0[48])|([13579][26])|([2468][048]))))|(([13579][26])|([2468][048]))|([48]))|(((([13579][26])|([2468][048]))|[48])00))\/2\/(([1-9])|(1[0-9])|([2][0-9])))

Group 2(((([1-9][0-9]((0[48])|([13579][26])|([2468][048])))|(([1-9]((0[48])|([13579][26])|([2468][048]))))|(([13579][26])|([2468][048]))|([48]))|(((([13579][26])|([2468][048]))|[48])00))\/2\/(([1-9])|(1[0-9])|([2][0-9])))

Group 3((([1-9][0-9]((0[48])|([13579][26])|([2468][048])))|(([1-9]((0[48])|([13579][26])|([2468][048]))))|(([13579][26])|([2468][048]))|([48]))|(((([13579][26])|([2468][048]))|[48])00))

1st Alternative(([1-9][0-9]((0[48])|([13579][26])|([2468][048])))|(([1-9]((0[48])|([13579][26])|([2468][048]))))|(([13579][26])|([2468][048]))|([48]))

Group 4(([1-9][0-9]((0[48])|([13579][26])|([2468][048])))|(([1-9]((0[48])|([13579][26])|([2468][048]))))|(([13579][26])|([2468][048]))|([48]))

1st Alternative([1-9][0-9]((0[48])|([13579][26])|([2468][048])))

Group 5([1-9][0-9]((0[48])|([13579][26])|([2468][048])))

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 6((0[48])|([13579][26])|([2468][048]))

1st Alternative(0[48])

Group 7(0[48])

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[48]

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

2nd Alternative([13579][26])

Group 8([13579][26])

Character Class[13579]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

7the literal 7 (55₁₀ / 67₈ / 37₁₆)

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

Character Class[26]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

3rd Alternative([2468][048])

Group 9([2468][048])

Character Class[2468]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

Character Class[048]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

2nd Alternative(([1-9]((0[48])|([13579][26])|([2468][048]))))

Group 10(([1-9]((0[48])|([13579][26])|([2468][048]))))

Group 11([1-9]((0[48])|([13579][26])|([2468][048])))

Character Class[1-9]

Group 12((0[48])|([13579][26])|([2468][048]))

3rd Alternative(([13579][26])|([2468][048]))

4th Alternative([48])

2nd Alternative(((([13579][26])|([2468][048]))|[48])00)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 25(([1-9])|(1[0-9])|([2][0-9]))

2nd Alternative(([1-9][0-9]{0,3})\/((([13578]|1[02])\/([1-9]|[12][0-9]|3[01]))|((([469]|11)\/([1-9]|([12][0-9])|(30)))|(2\/(([1-9])|(1[0-9])|([2][0-8]))))))

the literal (32₁₀ / 40₈ / 20₁₆)

Group 46((([02468])|([1][02468])|(2[02])):00)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

26 tokens

Regular Expression

((((([1-9][0-9]((0[48])|([13579][26])|([2468][048])))|(([1-9]((0[48])|([13579][26])|([2468][048]))))|(([13579][26])|([2468][048]))|([48]))|(((([13579][26])|([2468][048]))|[48])00))\/2\/(([1-9])|(1[0-9])|([2][0-9])))|(([1-9][0-9]{0,3})\/((([13578]|1[02])\/([1-9]|[12][0-9]|3[01]))|((([469]|11)\/([1-9]|([12][0-9])|(30)))|(2\/(([1-9])|(1[0-9])|([2][0-8]))))))) ((([02468])|([1][02468])|(2[02])):00)

Unit Tests

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