[英]regular expressions in java matching first occurrence of time
我想設置一個從行中查找時間的模式
String line = "INFO 00:08:39 - End executing test11093 : Next time will be Tue Nov 05 00:13:27 GMT 2013"
Pattern pTime = Pattern.compile("[0-9][0-9]:[0-9][0-9]:[0-9][0-9]");
Matcher mTime = pTime.matcher(line);
String dateTime = null;
while (mTime.find())
{
dateTime = mTime.group();
}
System.out.println(dateTime);
輸出是:00:13:27,但是我只想第一次!
嘗試添加中斷; 在dateTime = mTime.group()之后; 或以這種方式更改代碼
String dateTime = null;
if (mTime.find()) {
dateTime = mTime.group();
}
采用
if (mTime.find())
代替:
while (mTime.find())
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