Java and UNIX pipes

[potato]

A quick newbie question... is it possible to use a unix pipe to provide
the argument to a java program. Eg How do I get this to work from a
bash shell for example.....

someArgument|java -classpath /externaltest/bin/ test.PipeTest

Thanks for any help.

 

[Thomas Hawtin]

A quick newbie question... is it possible to use a unix pipe to provide
the argument to a java program. Eg How do I get this to work from a
bash shell for example.....

someArgument|java -classpath /externaltest/bin/ test.PipeTest

java -classpath /externaltest/bin/ test.PipeTest `someArgument`

IIRC you can use $( ) as well, but I don't like to type so much.

Tom Hawtin

 

[Chris Head]

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A quick newbie question... is it possible to use a unix pipe to provide
the argument to a java program. Eg How do I get this to work from a
bash shell for example.....

someArgument|java -classpath /externaltest/bin/ test.PipeTest

Thanks for any help.

Hi,
Note Thomas's reply; however, if you actually wanted to know how to get
data piped to your program as you showed above, the answer is to use
System.in. You probably want to wrap it in an InputStreamReader. You
might also want to wrap that in a BufferedReader and use the readLine()
method.

Chris
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[Joan]

A quick newbie question... is it possible to use a unix pipe to provide
the argument to a java program. Eg How do I get this to work from a
bash shell for example.....

someArgument|java -classpath /externaltest/bin/ test.PipeTest

look into "xargs"