regex - find specific string pattern in text using regular expression in java -

i need find regular expression use argument in string.matches. have text of strings separated space " " , want find type of number it. first of need check pattern this: "[number] e [number] & [number]". & symbol in string, e.

// *word* string tested        if (word.matches("\d++ e *\d++ & \d++")) *something that* 

for example "1001Ε101&2" true , "0114&2" false.

so need regular expression in word.matches(" *answer* ");

it's project in lexical analysis. must not use ready lexers.

your regex right. use way:

pattern.matches("\\d++ *e *\\d++ *& *\\d++", word); 

with word string check.

don't forget use double \ in regex string put simple \.