JShell.Builder Sınıfı

build metodu
Şöyle yaparız.

JShell shell = JShell.builder()
  .executionEngine(new ExecutionControlProvider() {
    @Override
    public String name() {
      return "direct";
    }
    @Override
    public ExecutionControl generate(ExecutionEnv ee, Map<String, String> map)
    throws Throwable {
      return new DirectExecutionControl();
    }
  }, null)
  .build();