java - java中如何分割字符串

Question

我在android中有项目，我需要拆分字符串，这实际上是日期，这是我要拆分的字符串：

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

这就是我所说的：

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;
    }

但它一直给我一个错误，所以如果你能帮助我，我会很高兴。干杯

Answer 1

我打赌你的意思是这样的：

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));

输出：

[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

You may make use of regex, using something like ^(\d+)/(\d+)/(\d+) (\d+):(\d) and you can get each captured group.

Answer 4

我认为基于 StringTokenizer 的解决方案将是最快的

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")));
}

输出

[1, 3, 2013, 9, 0]