search sting in a word bound in J2SE 1.3

Hello,

For some reason, I have to use j2se 1.3.

when i use indexOf() method, for example: there are two strings :

1. Physics of electronic and optoelectronic devices

2. Microelectronics and Nanotechnology

the word i need to find out is electronic, in this case string 1 should be the result, but if using indexOf() method, both strings will be the results.

my question is: is there a way that i can only get "Physics of electronic and optoelectronic devices"? by using j2se1.3

Thank you so much for your reply,

lilyyan
lilyyanAsked:
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objectsConnect With a Mentor Commented:
> if the srting is: "electronic and optoelectronic devices", adding space to fornt and back to "electronic", will still get the result?

no, but adding a leading and trailing space to the string being search will fix that problem.
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objectsCommented:
you could add a space to fornt and back and search for that  " electronic "
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lilyyanAuthor Commented:
hi, thanks for your prompt reply. that's a good idea.

the application currently i'm doing is user input some keywords, e.g. electronic acids disease, the progarm will get the tokens of the input string, i.e.
electronic
acids
disease
 then the program will search the token within a certian of a table

if the srting is: "electronic and optoelectronic devices", adding space to fornt and back to "electronic", will still get the result?



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lilyyanAuthor Commented:
agree, but the word to be searched could be located in the front or back
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shinobunCommented:
As objects said, "a leading _and_ trailing space" would do the trick.

So "electronic and optoelectronic devices" would become " electronic and optoelectronic devices " before you search.
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lilyyanAuthor Commented:
then both the kewwords and serach need add space
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