java startswith 正则_在Java中使用正则表达式进行部分精确匹配(Partly exact matching using regex in Java)...

I need to find if a String starts with "abcd" followed by 1-5 digits, then a comma, then ends with 0-3 digits.

Pattern pattern = Pattern.compile("abcd[0-9]{1,5},[0-9]{0,3}$");

String[] data = { "pqrsabcd12345,5", "abcd1234,5", "abcd1234542155,",

"abcdSD12345,555", "abcd123,555", "abcd12,5555",

"abcd,5555ffdfd", "abcd2,5555ffdfd", "abcd2,5" };

for (CharSequence input : data) {

Matcher matcher = pattern.matcher(input);

while (matcher.find()) {

System.out.format("\nI found the text %s :"

+ " \"%s\" starting at "

+ "index %d and ending at index %d.%n", input,

matcher.group(), matcher.start(), matcher.end());

}

}

The output :

I found the text pqrsabcd12345,5 : "abcd12345,5" starting at index 4 and ending at index 15.

I found the text abcd1234,5 : "abcd1234,5" starting at index 0 and ending at index 10.

I found the text abcd123,555 : "abcd123,555" starting at index 0 and ending at index 11.

I found the text abcd2,5 : "abcd2,5" starting at index 0 and ending at index 7.

Using this, I could ensure the ends with part. I think I am left with stopping Strings like "pqrsabcd12345,5"

Please let me know if I have missed something.