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Class java.lang.Process
java.lang.Object
|
+----java.lang.Process
public abstract class Process
extends Object
The exec
methods return an
instance of a subclass of Process
that can be used to
control the process and obtain information about it.
The subprocess is not killed when there are no more references to
the Process
object, but rather the subprocess
continues executing asynchronously.
See Also:
exec , exec , exec , exec
Process ()
destroy ()
Kills the subprocess.
exitValue ()
Returns the exit value for the subprocess.
getErrorStream ()
Gets the error stream of the subprocess.
getInputStream ()
Gets the input stream of the subprocess.
getOutputStream ()
Gets the output stream of the subprocess.
waitFor ()
Waits for the subprocess to complete.
Process
public Process()
getOutputStream
public abstract OutputStream getOutputStream()
Gets the output stream of the subprocess.
This stream is usually buffered.
Returns:
the output stream connected to the normal input of the
subprocess.
getInputStream
public abstract InputStream getInputStream()
Gets the input stream of the subprocess.
This stream is usually buffered.
Returns:
the input stream connected to the normal output of the
subprocess.
getErrorStream
public abstract InputStream getErrorStream()
Gets the error stream of the subprocess.
This stream is usually unbuffered.
Returns:
the input stream connected to the error stream of the
subprocess.
waitFor
public abstract int waitFor() throws InterruptedException
Waits for the subprocess to complete. This method returns
immediately if the subprocess has already terminated. If the
subprocess has not yet terminated, the calling thread will be
blocked until the subprocess exits.
Returns:
the exit value of the process.
Throws: InterruptedException
if the waitFor
was
interrupted.
exitValue
public abstract int exitValue()
Returns the exit value for the subprocess.
Returns:
the exit value of the subprocess.
Throws: IllegalThreadStateException
if the subprocess has not yet
terminated.
destroy
public abstract void destroy()
Kills the subprocess.
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