我正在创建一个应用程序，我想要一个功能，当用户按下E时，它会将鼠标指针设置到屏幕的中心(使用moveMouse()方法).然而，它只给了我IlLegalStateException异常分.

我试着用GlassRobot来代替(从this个问题中得到一个可接受的答案)，但这只给了我一个IllegalAccessException.我做错了什么？我需要加点什么吗？

Code and Error

IlLegalStateException异常

100:下面有一条 comments

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:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1082)
Caused by: java.lang.ExceptionInInitializerError
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:465)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:364)
    ... 5 more
Caused by: java.lang.IlLegalStateException异常: This operation is permitted on the event thread only; currentThread = main
    at javafx.graphics/com.sun.glass.ui.Application.checkEventThread(Application.java:447)
    at javafx.graphics/javafx.scene.robot.Robot.<init>(Robot.java:70)
    at com.galactify.tiles/com.galactify.tiles.HelloApplication.<clinit>(HelloApplication.java:37) // This is where the Robot object is created
    ... 11 more

场景机器人宣言

private static final Robot robot = new Robot() ;

玻璃机器人宣言

private static final Robot robot = com.sun.glass.ui.Application.GetApplication().createRobot() ;

Methods used to set the mouse pointer to the center when user presses E

static void onKeyReleased(KeyEvent evt) {
        KeyCode key = evt.getCode() ;
        out.println(key + " is released") ;

        switch (key) {
            case F11 -> {
                stage.setFullScreen(!isFullscreen) ;
                isFullscreen = !isFullscreen ;
            }

            case C -> {
                stage.close() ;
                isClosed = true ;
            }

            case E -> setupInventory() ;

        }
    }

static void setupInventory() {
        robot.mouseMove((double) screenWidth / 2, (double) screenHeight / 2) ;
    }