group() in java.util.regex.Matcher? -

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string pattern = "(.*)(\\d+)"; while(m.find()){         system.out.println(m.group(1));         system.out.println(m.group(2));      }

input:

this order placed qt3000! ok?

output :

this order placed qt300 0

why in first line of output doesnot include third 0 i.e qt3000? why second line of output doesnot print 3000?

this because of .* greedy , leave 1 \d group \\d+.make non greedy .*? , want.

.* match upto last char , start backtracking until finds \d.so when encouters 0 3000 while coming backwards stops right there.

.*? stop @ first instance of \d i.e 3.so 3000 in second group.

Script