ExecutionControlProvider (Java SE 12 & JDK 12 )

All Known Implementing Classes:

FailOverExecutionControlProvider, JdiExecutionControlProvider, LocalExecutionControlProvider
```
public interface ExecutionControlProvider
```
The provider used by JShell to generate the execution engine needed to evaluate Snippets. Alternate execution engines can be created by implementing this interface, then configuring JShell with the provider or the providers name and parameter specifier.

Since:

9

Method Summary

Modifier and Type	Method	Description
`default Map<String,String>`	`defaultParameters()`	Create and return the default parameter map for this `ExecutionControlProvider`.
`ExecutionControl`	`generate(ExecutionEnv env, Map<String,String> parameters)`	Create and return the `ExecutionControl` instance.
`String`	`name()`	The unique name of this `ExecutionControlProvider`.

- Method Detail
  - name
```
String name()
```
    The unique name of this ExecutionControlProvider. The name must be a sequence of characters from the Basic Multilingual Plane which are Character.isJavaIdentifierPart(char).
    
    Returns:
    
    the ExecutionControlProvider's name
  - defaultParameters
```
default Map<String,String> defaultParameters()
```
    Create and return the default parameter map for this ExecutionControlProvider. The map can optionally be modified; Modified or unmodified it can be passed to generate(jdk.jshell.spi.ExecutionEnv, java.util.Map).
    
    Returns:
    
    the default parameter map
  - generate
```
ExecutionControl generate(ExecutionEnv env,
                          Map<String,String> parameters)
                   throws Throwable
```
    Create and return the ExecutionControl instance.
    
    Parameters:
    
    env - the execution environment, provided by JShell
    
    parameters - the default or modified parameter map.
    
    Returns:
    
    the execution engine
    
    Throws:
    
    Throwable - an exception that occurred attempting to create the execution engine.