windows 7 - Java process.waitFor() does not return -


on windows 7 64 bit, running 64 bit java 1.7.0_17 , p.waitfor() shown below never returns.

string move_command="cmd.exe /c xcopy /y /e "+x86_release+" "+path+"\\"; process p; p = runtime.getruntime().exec(move_command); p.waitfor();

if use windows explorer, looks files copied (same number, same size, etc.)

if below, waitfor() return:

string move_command="cmd.exe /c move /y "+x86_release+" "+path+"\\"; process p; p = runtime.getruntime().exec(move_command); p.waitfor();

what different between xcopy , move keeps waitfor() returning, or on wrong track entirely?

xcopy happens produce more output move, filling out-buffer , blocking until flushed. default behavior in java pipe subprocess's stdout/stderr inputstreams required read programmatically lest subprocess's buffers overflow.

if latter case, solution simple, , in fact should anyway: use processbuilder prepare system call , call inheritio on it. reuse parent process`s stdin , stdout subprocess.

a side note, xcopy regular .exe file , doesn't need wrapping cmd.exe /c.


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