4_关于javaFx报错记录

> Task :run
Exception in thread "WindowsNativeRunloopThread" java.lang.NoSuchMethodError: <init>
	at javafx.graphics/com.sun.glass.ui.win.WinApplication.staticScreen_getScreens(Native Method)
	at javafx.graphics/com.sun.glass.ui.Screen.initScreens(Screen.java:412)
	at javafx.graphics/com.sun.glass.ui.Application.lambda$run$1(Application.java:152)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
	at java.base/java.lang.Thread.run(Thread.java:834)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException
	at javafx.graphics/com.sun.prism.d3d.D3DPipeline.getAdapterOrdinal(D3DPipeline.java:205)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.assignScreensAdapters(QuantumToolkit.java:738)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.runToolkit(QuantumToolkit.java:334)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.lambda$startup$10(QuantumToolkit.java:279)
	at javafx.graphics/com.sun.glass.ui.Application.lambda$run$1(Application.java:153)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
	at java.base/java.lang.Thread.run(Thread.java:834)
 > Task :run FAILED
 FAILURE: Build failed with an exception.
 * What went wrong:
Execution failed for task ':run'.
> Process 'command 'C:\Program Files\Java\jdk-11.0.5\bin\java.exe'' finished with non-zero exit value 1
 * Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
 * Get more help at https://help.gradle.org
 BUILD FAILED in 1m 15s
4 actionable tasks: 2 executed, 2 up-to-date
Process 'command 'C:\Program Files\Java\jdk-11.0.5\bin\java.exe'' finished with non-zero exit value 1
18:33:15: Task execution finished 'run'.

关于此段错误，查找后是由于同时安装的jdk1.8和jdk11所导致的问题，需要卸载jdk1.8，并把环境变量重新配置。并且以前使用jdk1.8的项目会编译失败。要更改版本。