test/jdk/javax/swing/JComboBox/JComboBoxBorderTest.java fails on non mac

test/jdk/javax/swing/JComboBox/JComboBoxBorderTest.java fails on Ubuntu

----------System.err:(19/1250)----------
java.lang.ClassNotFoundException: com.apple.laf.AquaLookAndFeel
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:496)
at java.base/java.lang.Class.forName(Class.java:475)
at java.desktop/javax.swing.SwingUtilities.loadSystemClass(SwingUtilities.java:2036)
at java.desktop/javax.swing.UIManager.setLookAndFeel(UIManager.java:637)
at JComboBoxBorderTest.main(JComboBoxBorderTest.java:86)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:125)
at java.base/java.lang.Thread.run(Thread.java:1623)

JavaTest Message: Test threw exception: java.lang.ClassNotFoundException: com.apple.laf.AquaLookAndFeel
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.ClassNotFoundException: com.apple.laf.AquaLookAndFeel