Interface ExecutionEnv
public interface ExecutionEnv
Functionality made available to a pluggable JShell execution engine. It is provided to the execution engine by the core JShell implementation.
This interface is designed to provide the access to core JShell functionality needed to implement ExecutionControl.
- Since:
- 9
- See Also:
Method Summary
| Modifier and Type | Method | Description |
|---|---|---|
void |
closeDown() |
Reports that the execution engine has shutdown. |
default Optional |
console() |
Returns the JShellConsole that should be used by the execution engine, or null if none. |
List |
extraRemoteVMOptions() |
Returns the additional VM options to be used when launching the remote JVM. |
PrintStream |
userErr() |
Returns the user's error stream. |
InputStream |
userIn() |
Returns the user's input stream. |
PrintStream |
userOut() |
Returns the user's output stream. |
Method Details
userIn
InputStream userIn()
Returns the user's input stream.
- Returns:
- the user's input stream
userOut
PrintStream userOut()
Returns the user's output stream.
- Returns:
- the user's output stream
userErr
PrintStream userErr()
Returns the user's error stream.
- Returns:
- the user's error stream
extraRemoteVMOptions
List<String> extraRemoteVMOptions()
Returns the additional VM options to be used when launching the remote JVM. This is advice to the execution engine.
Note: an execution engine need not launch a remote JVM.
- Returns:
- the additional options with which to launch the remote JVM
closeDown
void closeDown()
Reports that the execution engine has shutdown.
console
default Optional<JShellConsole> console()
Returns the
JShellConsole that should be used by the execution engine, or null if none. Note: an execution engine may not support JShellConsole.
- Implementation Requirements:
- The default implementation of this method returns an empty
Optional. - Returns:
- returns console, or an empty
Optionalif none, nevernull - Since:
- 21
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/25/docs/api/jdk.jshell/jdk/jshell/spi/ExecutionEnv.html
