Re: Complete command arguments

Lew <com.lewscanon@lew>
Sat, 19 Jul 2008 11:06:56 -0400
Lion-O wrote:

Thats really quite easy, a mere "enhanced for loop" does the job quite

public static void main(String[] args) {
  StringBuffer arguments = new StringBuffer();
  for (String a : args) {
    arguments.append(a + " ");

Patricia Shanahan wrote:

This only picks up the arguments passed to the application program's
main method, omitting the JVM arguments. The original example was:

  ..that was run in a CLI as..

    > java -Djava.library.path=x -cp y;z.jar Test -a -b would output..

    Complete args: java -Djava.library.path=x -cp y;z.jar Test -a -b

I think the point of *complete* was to pick up e.g. "-cp y;z.jar" that
would not be passed to main.

This is why marlow.andrew's advice is necessary, to use a shell script or the
like to start the program. Java programs are subject to a kind of G?delian
incompleteness - they cannot reach outside the world accessible to Java
programs, thus any parameters not passed into that world from the outside are
not accessible.

In the specific cases of the Java class path and the system property
java.library.path, the program can access the values via
java.lang.System#getProperties() and #getProperty(). However, this recovers
not the command line as such, but values of known properties with documented
semantics that have been set by any of a number of mechanisms.


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