On AIX ko_KR locale, I could see following exception after JTable.print() was called

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java.nio.charset.UnsupportedCharsetException: sun.font.X11KSC5601
        at java.base/java.nio.charset.Charset.forName(Charset.java:527)
        at java.desktop/sun.awt.FontConfiguration.getFontCharsetEncoder(FontConfiguration.java:964)
        at java.desktop/sun.awt.FontConfiguration.buildFontDescriptors(FontConfiguration.java:921)
        at java.desktop/sun.awt.FontConfiguration.getFontDescriptors(FontConfiguration.java:884)
        at java.desktop/sun.awt.FontConfiguration.getFontDescriptors(FontConfiguration.java:876)
        at java.desktop/sun.awt.PlatformFont.<init>(PlatformFont.java:74)
        at java.desktop/sun.awt.X11.XFontPeer.<init>(XFontPeer.java:33)
        at java.desktop/sun.awt.X11.XToolkit.getFontPeer(XToolkit.java:952)
        at java.desktop/java.awt.Font.getFontPeer(Font.java:488)
        at java.desktop/java.awt.Font$FontAccessImpl.getFontPeer(Font.java:282)
        at java.desktop/sun.print.PSPrinterJob.platformFontCount(PSPrinterJob.java:1247)
        at java.desktop/sun.print.PSPathGraphics.platformFontCount(PSPathGraphics.java:150)
        at java.desktop/sun.print.PathGraphics.printedSimpleGlyphVector(PathGraphics.java:851)
        at java.desktop/sun.print.PathGraphics.drawGlyphVector(PathGraphics.java:649)
        at java.desktop/sun.font.ExtendedTextSourceLabel.handleDraw(ExtendedTextSourceLabel.java:193)
        at java.desktop/sun.font.Decoration.drawTextAndDecorations(Decoration.java:123)
        at java.desktop/sun.font.ExtendedTextSourceLabel.draw(ExtendedTextSourceLabel.java:197)
        at java.desktop/java.awt.font.TextLine.draw(TextLine.java:776)
        at java.desktop/java.awt.font.TextLayout.draw(TextLayout.java:2609)
        at java.desktop/sun.swing.SwingUtilities2.drawString(SwingUtilities2.java:541)
        at java.desktop/sun.swing.SwingUtilities2.drawStringUnderlineCharAt(SwingUtilities2.java:652)
        at java.desktop/sun.swing.SwingUtilities2.drawStringUnderlineCharAt(SwingUtilities2.java:631)
        at java.desktop/javax.swing.plaf.basic.BasicLabelUI.paintEnabledText(BasicLabelUI.java:138)
        at java.desktop/javax.swing.plaf.basic.BasicLabelUI.paint(BasicLabelUI.java:203)
        at java.desktop/javax.swing.plaf.ComponentUI.update(ComponentUI.java:161)
        at java.desktop/javax.swing.JComponent.paintComponent(JComponent.java:852)
        at java.desktop/sun.swing.table.DefaultTableCellHeaderRenderer.paintComponent(DefaultTableCellHeaderRenderer.java:159)
        at java.desktop/javax.swing.JComponent.printComponent(JComponent.java:1292)
        at java.desktop/javax.swing.JComponent.paint(JComponent.java:1132)
        at java.desktop/javax.swing.CellRendererPane.paintComponent(CellRendererPane.java:170)
        at java.desktop/javax.swing.plaf.basic.BasicTableHeaderUI.paintCell(BasicTableHeaderUI.java:741)
        at java.desktop/javax.swing.plaf.basic.BasicTableHeaderUI.paint(BasicTableHeaderUI.java:683)
        at java.desktop/javax.swing.plaf.ComponentUI.update(ComponentUI.java:161)
        at java.desktop/javax.swing.JComponent.paintComponent(JComponent.java:852)
        at java.desktop/javax.swing.JComponent.printComponent(JComponent.java:1292)
        at java.desktop/javax.swing.JComponent.paint(JComponent.java:1132)
        at java.desktop/javax.swing.JComponent.print(JComponent.java:1274)
        at java.desktop/javax.swing.TablePrintable.print(TablePrintable.java:370)
        at java.desktop/javax.swing.JTable$ThreadSafePrintable$1.run(JTable.java:6630)
        at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
        at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:773)
        at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:720)
        at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:714)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
        at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
        at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
        at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
        at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:117)
        at java.desktop/java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:191)
        at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:236)
        at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:234)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
        at java.desktop/java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:234)
        at java.desktop/java.awt.Dialog.show(Dialog.java:1080)
        at java.desktop/java.awt.Component.show(Component.java:1728)
        at java.desktop/java.awt.Component.setVisible(Component.java:1675)
        at java.desktop/java.awt.Window.setVisible(Window.java:1036)
        at java.desktop/java.awt.Dialog.setVisible(Dialog.java:1016)
        at java.desktop/sun.swing.PrintingStatus.showModalOnEDT(PrintingStatus.java:204)
        at java.desktop/sun.swing.PrintingStatus.showModal(PrintingStatus.java:172)
        at java.desktop/javax.swing.JTable.print(JTable.java:6439)
        at java.desktop/javax.swing.JTable.print(JTable.java:6246)
        at java.desktop/javax.swing.JTable.print(JTable.java:6201)
        at java.desktop/javax.swing.JTable.print(JTable.java:6166)
        at java.desktop/javax.swing.JTable.print(JTable.java:6140)
        at WeekdayList$1.actionPerformed(WeekdayList.java:28)
        at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
        at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2313)
        at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
        at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
        at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279)
        at java.desktop/java.awt.Component.processMouseEvent(Component.java:6620)
        at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3398)
        at java.desktop/java.awt.Component.processEvent(Component.java:6385)
        at java.desktop/java.awt.Container.processEvent(Container.java:2266)
        at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4995)
        at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
        at java.desktop/java.awt.Component.dispatchEvent(Component.java:4827)
        at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4948)
        at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4575)
        at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4516)
        at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2310)
        at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2780)
        at java.desktop/java.awt.Component.dispatchEvent(Component.java:4827)
        at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:775)
        at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:720)
        at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:714)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:97)
        at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:747)
        at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
        at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:744)
        at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
        at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
        at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
        at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
        at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
        at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
==========

Test instructions are as follows:
(Note: GUI environment, Korean locale and printer setting are required on AIX system)

1. Compile WeekdayList.java and execute it on ko_KR locale with -Dfile.encoding=COMPAT option on GUI environment
    $ env LANG=ko_KR java -Dfile.encoding=COMPAT WeekdayList
2. Press Print button
3. On print dialog, select "Print To File" checkbox, press Print button
4. On file dialog, set "File Name", press Save button
   (If file name is there, confirmation dialog is displayed, press "Yes" if the file can be overwritten)
5. Then see above exception

According to my investigation, sun.font.X11KSC5601 came from:
  src/java.desktop//unix/classes/sun/font/MFontConfiguration.java:
    encodingMap.put("ksc5601.1987-0", "sun.font.X11KSC5601");

This issue was happned on following code.
        if (!charsetName.startsWith("sun.awt.") && !charsetName.equals("default")) {
            fc = Charset.forName(charsetName);
        } else {

On JDK8, X11KSC5601 class file is in sun.awt.motif package.

But it seems it was moved to sun.font package by:
    JDK-8035302 Eliminate dependency on jdk.charsets from 2D font code.
I think !charsetName.startsWith("sun.font.") should be added