The following static methods are not available in Java SE 11:
com.sun.awt.AWTUtilities.isTranslucencySupported()com.sun.awt.AWTUtilities.setWindowOpacity()com.sun.awt.AWTUtilities.getWindowOpacity()com.sun.awt.AWTUtilities.getWindowShape()com.sun.awt.AWTUtilities.isWindowOpaque()com.sun.awt.AWTUtilities.isTranslucencyCapable() com.sun.awt.AWTUtilities.setComponentMixingCutoutShape()This rule has an automated fix that replaces the mentioned methods with the JavaSE 11 equivalent.
Copy the custom configuration to your application build file to enable the fix automation.
For more information on the removed classes, see Removal of com.sun.awt.AWTUtilities, Java 11 Removed Features and Options, Java 10 Removed Features and Options, and Java 9 Removed Features and Options