Question

请帮助我修复此月食错误。实际上问题是当我尝试在Eclipse IDE中启动javafx时，IDE编译器显示了这些错误，如图所示。尽管JavaFx libaray是导入的代码，但也是正确的，为什么我仍然会收到此类错误。请帮我解决这个问题。

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class StreamTest {

public static void main(String[] args) {
    // TODO Auto-generated method stub
    System.out.println("Hello World");
    Map<String, String> a = new HashMap<String, String>();
    a.put("1", "Bharathi");
    a.put("2", "Test");
    a.put("3", "Hello");
    List<Map<String, String>> b = new ArrayList<>();
    b.add(a);
    System.out.println("Hello World" + b);

    /*
     * b.stream().map(c-> c.entrySet().stream().collect( Collectors.toMap(entry ->
     * entry.getKey(), entry -> entry.getValue())));
     */

    Stream<List<String>> map2 = b.stream()
            .map(c -> c.entrySet().stream().map(map -> map.getKey()).collect(Collectors.toList()));
    //List<List<String>> collect = map2.map(v -> v).collect(Collectors.toList());

  }

}

import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class HelloWorld extends Application {
    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Hello World!");
        Button btn = new Button();
        btn.setText("Say 'Hello World'");


        StackPane root = new StackPane();
        root.getChildren().add(btn);
        primaryStage.setScene(new Scene(root, 300, 250));
        primaryStage.show();
    }

为什么Eclipse在运行JavaFX应用程序时会显示这些错误？

0 个答案: