ubuntu 20.04 運行umlet報錯，錯誤信息如下:
Exception in thread "main" java.lang.UnsatisfiedLinkError: Can't load library: /usr/lib/jvm/java-11-openjdk-amd64/lib/libawt_xawt.so
at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2630)
at java.base/java.lang.Runtime.load0(Runtime.java:768)
at java.base/java.lang.System.load(System.java:1837)
at java.base/java.lang.ClassLoader$NativeLibrary.load0(Native Method)
at java.base/java.lang.ClassLoader$NativeLibrary.load(ClassLoader.java:2442)
at java.base/java.lang.ClassLoader$NativeLibrary.loadLibrary(ClassLoader.java:2498)
at java.base/java.lang.ClassLoader.loadLibrary0(ClassLoader.java:2694)
at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2648)
at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:830)
at java.base/java.lang.System.loadLibrary(System.java:1873)
at java.desktop/java.awt.Toolkit$3.run(Toolkit.java:1399)
at java.desktop/java.awt.Toolkit$3.run(Toolkit.java:1397)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.desktop/java.awt.Toolkit.loadLibraries(Toolkit.java:1396)
at java.desktop/java.awt.Toolkit.<clinit>(Toolkit.java:1429)
at java.desktop/javax.swing.UIManager.getSystemLookAndFeelClassName(UIManager.java:661)
at com.baselet.control.config.Config.initUiManager(Config.java:71)
at com.baselet.control.config.Config.<init>(Config.java:58)
at com.baselet.control.config.Config.<clinit>(Config.java:22)
at com.baselet.standalone.MainStandalone.startStandalone(MainStandalone.java:117)
at com.baselet.standalone.MainStandalone.main(MainStandalone.java:101)
解決方法：sudo apt install openjdk-11-jdk