Class java.lang.Process
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Class java.lang.Process
java.lang.Object
|
+----java.lang.Process
- public class Process
- extends Object
An instance of class Process is returned by variants of the exec
method in class System. From the Process instance, it is
possible to: get the standin and/or standout of the subprocess,
kill the subprocess, wait for it to terminate, and to
retrieve the final exit value of the process.
Dropping the last reference to a Process instance does *not*
kill the subprocess. There is no requirement that the
subprocess execute asynchronously with the existing Java process.
-
Process()
-
-
destroy()
- Kills the subprocess.
-
exitValue()
- Returns the exit value for the subprocess.
-
getErrorStream()
- Returns the an InputStream connected to the error stream of the child process.
-
getInputStream()
-
Returns a Stream connected to the output of the child process.
-
getOutputStream()
- Returns a Stream connected to the input of the child process.
-
waitFor()
- Waits for the subprocess to complete.
Process
public Process()
getOutputStream
public abstract OutputStream getOutputStream()
- Returns a Stream connected to the input of the child process.
This stream is traditionally buffered.
getInputStream
public abstract InputStream getInputStream()
- Returns a Stream connected to the output of the child process.
This stream is traditionally buffered.
getErrorStream
public abstract InputStream getErrorStream()
- Returns the an InputStream connected to the error stream of the child process.
This stream is traditionally unbuffered.
waitFor
public abstract int waitFor() throws InterruptedException
- Waits for the subprocess to complete. If the subprocess has
already terminated the exit value is simply returned. If the
subprocess has not yet terminated the calling thread will be
blocked until the subprocess exits.
Should this be called join()?
- Throws: InterruptedException
- Another thread has interrupted this thread.
exitValue
public abstract int exitValue()
- Returns the exit value for the subprocess.
- Throws: IllegalThreadStateException
- If the subprocess has not yet
terminated.
destroy
public abstract void destroy()
- Kills the subprocess.
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