--Parsing des chaînes de date et d'heure avec la classe SimpleDateFormat de Java pour enchaîner les objets Date
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
*Un exemple pour analyser le format avec SimpleDateFormat.
*/
public class Sample {
public static void main(String[] args) {
String[] sourceList = {
"1-2-3 4:5:6",
"99-2-3 4:5:6",
"999-2-3 4:5:6",
"2000-12-31 12:34:56",
"9999-12-31 12:34:56.0001",
"9999-12-31 12:34:56.000001",
"10000-12-31 12:34:56",
"XXXX-YY-ZZ AA:BB:CC",
"9999X-12X-31X 12X:34X:56X",
"X9999-X12-X31 X12:X34:X56",
};
parseAndFormat(sourceList, "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm:ss");
parseAndFormat(sourceList, "y-M-d H:m:s", "yyyy-MM-dd HH:mm:ss");
parseAndFormat(sourceList, "yyyy-MM-dd HH:mm:ss", "y-M-d H:m:s");
}
/**
*Analyser et formater.
* @param sourceList Un tableau de chaînes à analyser
* @param parsePattern Chaîne de modèle qui analyse les chaînes de date et d'heure
* @param formatPattern Date Une chaîne de modèle qui met en forme un objet
*/
private static void parseAndFormat(String[] sourceList, String parsePattern, String formatPattern) {
//Préparez l'analyseur
SimpleDateFormat parser = new SimpleDateFormat(parsePattern);
//Préparez le formateur
SimpleDateFormat formatter = new SimpleDateFormat(formatPattern);
System.out.println("****************************************");
System.out.println("Parse: " + parsePattern);
System.out.println("Format: " + formatPattern);
for (String source : sourceList) {
try {
//Convertir la chaîne de date et d'heure en objet Date
Date date = parser.parse(source);
//Convertir l'objet Date en chaîne de date et d'heure
String text = formatter.format(date);
System.out.println(source + " -> " + text);
} catch (ParseException e) {
System.out.println(source + " -> " + e.toString());
}
}
System.out.println();
}
}
Exemple d'exécution avec Java 8 (AdoptOpenJDK 1.8.0_272-b10) + macOS Catalina.
****************************************
Parse: yyyy-MM-dd HH:mm:ss
Format: yyyy-MM-dd HH:mm:ss
1-2-3 4:5:6 -> 0001-02-03 04:05:06
99-2-3 4:5:6 -> 0099-02-03 04:05:06
999-2-3 4:5:6 -> 0999-02-03 04:05:06
2000-12-31 12:34:56 -> 2000-12-31 12:34:56
9999-12-31 12:34:56.0001 -> 9999-12-31 12:34:56
9999-12-31 12:34:56.000001 -> 9999-12-31 12:34:56
10000-12-31 12:34:56 -> 10000-12-31 12:34:56
XXXX-YY-ZZ AA:BB:CC -> java.text.ParseException: Unparseable date: "XXXX-YY-ZZ AA:BB:CC"
9999X-12X-31X 12X:34X:56X -> java.text.ParseException: Unparseable date: "9999X-12X-31X 12X:34X:56X"
X9999-X12-X31 X12:X34:X56 -> java.text.ParseException: Unparseable date: "X9999-X12-X31 X12:X34:X56"
****************************************
Parse: y-M-d H:m:s
Format: yyyy-MM-dd HH:mm:ss
1-2-3 4:5:6 -> 0001-02-03 04:05:06
99-2-3 4:5:6 -> 1999-02-03 04:05:06
999-2-3 4:5:6 -> 0999-02-03 04:05:06
2000-12-31 12:34:56 -> 2000-12-31 12:34:56
9999-12-31 12:34:56.0001 -> 9999-12-31 12:34:56
9999-12-31 12:34:56.000001 -> 9999-12-31 12:34:56
10000-12-31 12:34:56 -> 10000-12-31 12:34:56
XXXX-YY-ZZ AA:BB:CC -> java.text.ParseException: Unparseable date: "XXXX-YY-ZZ AA:BB:CC"
9999X-12X-31X 12X:34X:56X -> java.text.ParseException: Unparseable date: "9999X-12X-31X 12X:34X:56X"
X9999-X12-X31 X12:X34:X56 -> java.text.ParseException: Unparseable date: "X9999-X12-X31 X12:X34:X56"
****************************************
Parse: yyyy-MM-dd HH:mm:ss
Format: y-M-d H:m:s
1-2-3 4:5:6 -> 1-2-3 4:5:6
99-2-3 4:5:6 -> 99-2-3 4:5:6
999-2-3 4:5:6 -> 999-2-3 4:5:6
2000-12-31 12:34:56 -> 2000-12-31 12:34:56
9999-12-31 12:34:56.0001 -> 9999-12-31 12:34:56
9999-12-31 12:34:56.000001 -> 9999-12-31 12:34:56
10000-12-31 12:34:56 -> 10000-12-31 12:34:56
XXXX-YY-ZZ AA:BB:CC -> java.text.ParseException: Unparseable date: "XXXX-YY-ZZ AA:BB:CC"
9999X-12X-31X 12X:34X:56X -> java.text.ParseException: Unparseable date: "9999X-12X-31X 12X:34X:56X"
X9999-X12-X31 X12:X34:X56 -> java.text.ParseException: Unparseable date: "X9999-X12-X31 X12:X34:X56"
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