import java.util.Arrays; 
import java.util.List; 
import java.util.Optional; 
import java.util.stream.Stream; 

public class JdkBug { 

  public static void main(String args[]) { 
    List<String> commandList = Arrays.asList("command1", "command2", "command3"); 

    Optional<String> optionalCommandMarker = Optional.of("command2"); 

    Stream<CommandConfig> commandConfig = commandList.stream().map(command -> { 
      return new CommandConfig(command, optionalCommandMarker.map(command::equalsIgnoreCase).orElse(false)); 
    }); 
     
    commandConfig.forEach(System.out::println); 
  } 

  private static class CommandConfig { 
    private String command; 
    private boolean isMarked; 

    public CommandConfig(String command, boolean isMarked) { 
      this.command = command; 
      this.isMarked = isMarked; 
    } 

    @Override 
    public String toString() { 
      return "CommandConfig [command=" + command + ", isMarked=" + isMarked + "]"; 
    } 
  } 
}