We write a java tool which could record runtime information, such as
thread call stacks, of java applications, and these runtime information
is printed to stdout.

Now, we write an Eclipse plugin as an UI for this java tool, launch our
java tool in our Eclipse plugin, and show these runtime information by
TreeItem or TreeColum in Eclipse plugin.  It seems that we have to
transfer runtime information from user's java application to our Eclipse
plugin.  Here are some choices in my mind,

1) Parse the output in stdout.  Since our runtime information is printed
in stdout, we could extract them from stdout.
2) Socket.  We could set up a socket to communicate between our java
tool and Eclipse plugin UI.  It is complicated to package runtime
information, send, and build runtime information in Eclipse plugin.

 +-----+          +--------+         +-------+
 |     |          |        |         |       |
 | App |--------> |  Tool  |----+--->|Eclipse|
 |     |          |        |    |    |       |
 +-----+          +--------+    |    +-------+
                                |
                                |    +-------+
                                |    |       |
                                +--->|stdout |
                                     |       |
                                     +-------+

At the same time, I don't want to remove the ability to print to stdout,
because sometimes, we want to show runtime information in console, while
runtime information could be shown in Eclipse plugin if our tool is
launched from our Eclipse.

How do I get runtime information in Eclipse plugin?
How do I achieve "output switch between Eclipse and stdout" easily?
Comments are welcome!

Best Regards