每次尝试在IntelliJ中运行JavaFX程序时，都会遇到此问题，但我不知道如何解决它。 这是我得到的错误：
Exception in Application start method
Exception in thread "main" java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1071)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.IllegalAccessError: superclass access check failed: class com.sun.javafx.scene.control.ControlHelper (in unnamed module @0x166469aa) cannot access class com.sun.javafx.scene.layout.RegionHelper (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.scene.layout to unnamed module @0x166469aa
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:151)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:825)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:723)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:646)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:604)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:168)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at javafx.scene.control.Control.<clinit>(Control.java:86)
at equationpkg.EquationsGUI.start(EquationsGUI.java:39)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
... 1 more
还有我的代码EquationsGUI.java：
package equationpkg;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Point2D;
import javafx.scene.Scene;
import javafx.scene.chart.*;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class EquationsGUI extends Application {
private Label m1Label;
private TextField m1TextBox;
private Label b1Label;
private TextField b1TextBox;
private Label m2Label;
private TextField m2TextBox;
private Label b2Label;
private TextField b2TextBox;
private Label resultLabel;
private TextField resultTextBox;
private LineChart chart;
@Override
public void start(Stage primaryStage) throws Exception {
m1Label = new Label("m1");
m1TextBox = new TextField();
b1Label = new Label("b1");
b1TextBox = new TextField();
m2Label = new Label("m2");
m2TextBox = new TextField();
b2Label = new Label("b2");
b2TextBox = new TextField();
Button b = new Button("Solve");
resultLabel = new Label("Result");
resultTextBox = new TextField();
// The grid is our container.
// We will add all our GUI components to it.
// GridPanes have rows and columns, but note that the
// column comes before the row in the parameter lists
GridPane grid = new GridPane();
grid.setHgap(10); // sets the horizontal spacing
grid.setVgap(10); // sets the vertical spacing
// Sets the padding around the edges of the container
grid.setPadding(new Insets(10, 10, 10, 10));
// Add the first label and TextBox to the GUI
grid.add(m1Label, 0, 0);
grid.add(m1TextBox, 1, 0);
// Add the first label and TextBox to the GUI
grid.add(b1Label, 0, 1);
grid.add(b1TextBox, 1, 1);
// Code for Checkpoint 2 goes here
grid.add(m2Label, 0, 2);
grid.add(m2TextBox, 1, 2);
grid.add(b2Label, 0, 3);
grid.add(b2TextBox, 1, 3);
grid.add(b, 0, 4);
grid.add(resultLabel, 0, 5 );
grid.add(resultTextBox, 1, 5);
// Code for CheckPoint 3 goes here
b.setOnAction(new Solver());
// Code for Checkpoint 4 goes here
chart = new LineChart(new CategoryAxis(), new CategoryAxis());
grid.add(chart, 2, 0, 3, 6);
chart.setTitle("Graph of Line");
chart.getXAxis().setAutoRanging(true);
chart.getYAxis().setAutoRanging(true);
double m1 = Double.parseDouble(m1TextBox.getText());
double m2 = Double.parseDouble(m2TextBox.getText());
double b1 = Double.parseDouble(b1TextBox.getText());
double b2 = Double.parseDouble(b2TextBox.getText());
LinearEquation eq1 = new LinearEquation(m1, b1);
LinearEquation eq2 = new LinearEquation(m2, b2);
XYChart.Series series1 = new XYChart.Series();
series1.getData().add(new XYChart.Data<>("0", eq1.eval(0)));
series1.getData().add(new XYChart.Data<>("5", eq1.eval(5)));
chart.getData().add(series1);
primaryStage.setTitle("Equation Solver");
primaryStage.setScene(new Scene(grid));
primaryStage.show();
}
// Code for CheckPoint solver() 3 goes here (and below)
public class Solver extends EquationsGUI implements EventHandler<ActionEvent> {
@Override
public void handle(ActionEvent e) {
double m1 = Double.parseDouble(m1TextBox.getText());
double m2 = Double.parseDouble(m2TextBox.getText());
double b1 = Double.parseDouble(b1TextBox.getText());
double b2 = Double.parseDouble(b2TextBox.getText());
LinearEquation eq1 = new LinearEquation(m1, b1);
LinearEquation eq2 = new LinearEquation(m2, b2);
SimultaneousEquations se = new SimultaneousEquations(eq1, eq2);
resultTextBox.setText(se.solve().toString());
}
}
}
我相信我的模块路径运行正常，但是我可能错了。 我不太确定出了什么问题，对知道这一点的人将不胜感激。