arduino java serial communication not working -

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i'm trying communicate arduino java using eclipse. using tutorial arduino -> java problem message "could not find com port" , dont know how fix this. think has me not chosing right port in code.

sceenshot

here can see message eclipse , arduino using com 3 , serial communication working.

i might have wrong java code supposed string "hello world" , display in console right ?

thanks in advance help.

maybe arduino not connected on com3 port. should know port pc assign arduino connection.

you can discover using ardulink console: www.ardulink.org


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