如何在java中拆分字符串

Question

i have project in android, and i need split string, which is actually date here is the String that i'm going to split:

String datetime = "01/03/2013 09:00";

and this is how i call them:

int year = splitDateTime(dateTime)[0];

public int[] splitDateTime(String datetime){
        String date_time = datetime;
        String delimiter = "//:";

        String[] sParts;
        int[] intParts;

        sParts = date_time.split(delimiter);
        intParts = new int[sParts.length];

        for(int i =0; i < sParts.length ; i++)
            intParts[i] = Integer.parseInt(sParts[i]);

        return intParts;
    }

but it keeps giving me an error, so i would be happy if you help me out guys. cheers

Answer 1

I bet you mean something like:

String datetime = "01/03/2013 09:00";

String[] sParts = datetime.split("[/:\\s+]");
int[] iParts = new int[sParts.length];

for(int i = 0; i < sParts.length; i++)
    iParts[i] = Integer.parseInt(sParts[i]);

System.out.println(Arrays.toString(iParts));

OUTPUT:

[1, 3, 2013, 9, 0]

Answer 2

I think you should use Calendar

String dateTime = "01/03/2013 09:00";
SimpleDateFormat f = new SimpleDateFormat("dd/MM/yyyy HH:mm");
Date d = f.parse(dateTime);

Calendar c = Calendar.getInstance();
c.setTime(d);
int year = c.get(Calendar.YEAR);

Answer 3

您可以使用正则表达式，使用类似^(\\d+)/(\\d+)/(\\d+) (\\d+):(\\d) ，您可以获取每个捕获的组。

Answer 4

I think StringTokenizer based solution will be the fastest

public static int[] splitDateTime(String dateTime) {
    int[] intParts = new int[5];
    StringTokenizer t = new StringTokenizer(dateTime, "/ :");
    for (int i = 0; t.hasMoreTokens(); i++) {
        intParts[i] = Integer.parseInt(t.nextToken());
    }
    return intParts;
}

public static void main(final String[] args) throws IOException {
    System.out.println(Arrays.toString(splitDateTime("01/03/2013 09:00")));
}

output

[1, 3, 2013, 9, 0]