正規表現で24時間形式の時刻を検証する方法
24時間形式の正規表現パターンでの時間
([01]?[0-9]|2[0-3]):[0-5][0-9]
説明
( #start of group #1 [01]?[0-9] # start with 0-9,1-9,00-09,10-19 | # or 2[0-3] # start with 20-23 ) #end of group #1 : # follow by a semi colon (:) [0-5][0-9] # follw by 0..5 and 0..9, which means 00 to 59
24時間制の形式は、0〜23または00〜23から始まり、セミコロン（:)で始まり、その後に00〜59が続きます。
Java正規表現の例
package com.example.regex;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Time24HoursValidator{
private Pattern pattern;
private Matcher matcher;
private static final String TIME24HOURS_PATTERN =
"([01]?[0-9]|2[0-3]):[0-5][0-9]";
public Time24HoursValidator(){
pattern = Pattern.compile(TIME24HOURS_PATTERN);
}
/**
* Validate time in 24 hours format with regular expression
* @param time time address for validation
* @return true valid time fromat, false invalid time format
*/
public boolean validate(final String time){
matcher = pattern.matcher(time);
return matcher.matches();
}
}
一致する時刻形式：
1. 「01:00」、「02:00」、「13:00」、
2。 「1:00」、「2:00」、「13:01」、
3。 「23:59」、「15:00」
4。 「00:00」、「0:00」
時間の形式が一致しません：
1. 「24:00」–時間が範囲外です[0-23]
2。 「12:60」–分が範囲外です[00-59]
3。 「0：0」–分には無効な形式、少なくとも2桁
4。 「13：1」–分に対して無効な形式、少なくとも2桁
5。 「101：00」–時間は範囲外です[0-23]
単体テスト-Time24HoursValidatorTest
package com.example.regex;
import org.testng.Assert;
import org.testng.annotations.*;
/**
* Time 24 hours format validator Testing
* @author example
*
*/
public class Time24HoursValidatorTest {
private Time24HoursValidator time24HoursValidator;
@BeforeClass
public void initData(){
time24HoursValidator = new Time24HoursValidator();
}
@DataProvider
public Object[][] ValidTime24HoursProvider() {
return new Object[][]{
new Object[] {"01:00"}, new Object[] {"02:00"},
new Object[] {"13:00"}, new Object[] {"1:00"},
new Object[] {"2:00"},new Object[] {"13:01"},
new Object[] {"23:59"}, new Object[] {"15:00"},
new Object[] {"00:00"}, new Object[] {"0:00"}
};
}
@DataProvider
public Object[][] InvalidTime24HoursProvider() {
return new Object[][]{
new Object[] {"24:00"},new Object[] {"12:60"},
new Object[] {"0:0"},new Object[] {"13:1"},
new Object[] {"101:00"}
};
}
@Test(dataProvider = "ValidTime24HoursProvider")
public void ValidTime24HoursTest(String time) {
boolean valid = time24HoursValidator.validate(time);
System.out.println("Time24Hours is valid : " + time + " , " + valid);
Assert.assertEquals(true, valid);
}
@Test(dataProvider = "InvalidTime24HoursProvider",
dependsOnMethods="ValidTime24HoursTest")
public void InValidTime24HoursTest(String time) {
boolean valid = time24HoursValidator.validate(time);
System.out.println("Time24Hours is valid : " + time + " , " + valid);
Assert.assertEquals(false, valid);
}
}
単体テスト-結果
Time24Hours is valid : 01:00 , true
Time24Hours is valid : 02:00 , true
Time24Hours is valid : 13:00 , true
Time24Hours is valid : 1:00 , true
Time24Hours is valid : 2:00 , true
Time24Hours is valid : 13:01 , true
Time24Hours is valid : 23:59 , true
Time24Hours is valid : 15:00 , true
Time24Hours is valid : 00:00 , true
Time24Hours is valid : 0:00 , true
Time24Hours is valid : 24:00 , false
Time24Hours is valid : 12:60 , false
Time24Hours is valid : 0:0 , false
Time24Hours is valid : 13:1 , false
Time24Hours is valid : 101:00 , false
PASSED: ValidTime24HoursTest("01:00")
PASSED: ValidTime24HoursTest("02:00")
PASSED: ValidTime24HoursTest("13:00")
PASSED: ValidTime24HoursTest("1:00")
PASSED: ValidTime24HoursTest("2:00")
PASSED: ValidTime24HoursTest("13:01")
PASSED: ValidTime24HoursTest("23:59")
PASSED: ValidTime24HoursTest("15:00")
PASSED: ValidTime24HoursTest("00:00")
PASSED: ValidTime24HoursTest("0:00")
PASSED: InValidTime24HoursTest("24:00")
PASSED: InValidTime24HoursTest("12:60")
PASSED: InValidTime24HoursTest("0:0")
PASSED: InValidTime24HoursTest("13:1")
PASSED: InValidTime24HoursTest("101:00")
===============================================
com.example.regex.Time24HoursValidatorTest
Tests run: 15, Failures: 0, Skips: 0
===============================================
===============================================
example
Total tests run: 15, Failures: 0, Skips: 0
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