Fail to start in CJK( Chinese, Japanese or Korean) env

[jackyzy823]

java -jar snowflake-1.0.4.jar

Error Message:

Exception in thread "main" java.lang.Error: Cannot load javax.swing.plaf.metal.MetalLookAndFeel
    at java.desktop/javax.swing.UIManager.initializeDefaultLAF(UIManager.java:1406)
    at java.desktop/javax.swing.UIManager.initialize(UIManager.java:1517)
    at java.desktop/javax.swing.UIManager.maybeInitialize(UIManager.java:1483)
    at java.desktop/javax.swing.UIManager.getDefaults(UIManager.java:709)
    at java.desktop/javax.swing.UIManager.getColor(UIManager.java:751)
    at java.desktop/javax.swing.plaf.nimbus.DerivedColor.rederiveColor(DerivedColor.java:81)
    at java.desktop/javax.swing.plaf.nimbus.NimbusDefaults.getDerivedColor(NimbusDefaults.java:1640)
    at java.desktop/javax.swing.plaf.nimbus.NimbusDefaults.addColor(NimbusDefaults.java:1597)
    at java.desktop/javax.swing.plaf.nimbus.NimbusDefaults.addColor(NimbusDefaults.java:1591)
    at java.desktop/javax.swing.plaf.nimbus.NimbusDefaults.initializeDefaults(NimbusDefaults.java:249)
    at java.desktop/javax.swing.plaf.nimbus.NimbusLookAndFeel.getDefaults(NimbusLookAndFeel.java:138)
    at snowflake.App.main(App.java:68)

After some digging, I found that it is caused by http://hg.openjdk.java.net/jdk/jdk11/file/1ddf9a99e4ad/src/java.desktop/share/classes/javax/swing/plaf/synth/SynthLookAndFeel.java#l839

 UIDefaults defaults = UIManager.getLookAndFeelDefaults();

the deafults is null pointer.

caused by http://hg.openjdk.java.net/jdk/jdk11/file/1ddf9a99e4ad/src/java.desktop/share/classes/javax/swing/UIManager.java#l1086

    /**

     * Returns the {@code UIDefaults} from the current look and feel,

     * that were obtained at the time the look and feel was installed.

     * <p>

     * In general, developers should use the {@code UIDefaults} returned from

     * {@code getDefaults()}. As the current look and feel may expect

     * certain values to exist, altering the {@code UIDefaults} returned

     * from this method could have unexpected results.

     *

     * @return <code>UIDefaults</code> from the current look and feel

     * @see #getDefaults

     * @see #setLookAndFeel(LookAndFeel)

     * @see LookAndFeel#getDefaults

     */

    public static UIDefaults getLookAndFeelDefaults() {

        maybeInitialize();

        return getLAFState().getLookAndFeelDefaults();

    }

And these code will only be executed when using CJK env see http://hg.openjdk.java.net/jdk/jdk11/file/1ddf9a99e4ad/src/java.desktop/share/classes/javax/swing/plaf/synth/SynthLookAndFeel.java#l796

     * Antialiasing might be forced off if the desktop is GNOME and the user

     * has set his locale to Chinese, Japanese or Korean. This is consistent

     * with what GTK does. See com.sun.java.swing.plaf.gtk.GtkLookAndFeel

     * for more information about CJK and antialiased fonts.

So it's recommend to set a default UIDefault in muon-app/src/main/java/muon/app/ui/laf/AppSkin.java

diff --git a/muon-app/src/main/java/muon/app/ui/laf/AppSkin.java b/muon-app/src/main/java/muon/app/ui/laf/AppSkin.java
index 262544f..8e6fca4 100644
--- a/muon-app/src/main/java/muon/app/ui/laf/AppSkin.java
+++ b/muon-app/src/main/java/muon/app/ui/laf/AppSkin.java
@@ -39,9 +39,14 @@ public abstract class AppSkin {
        }

        private void initDefaults() {
+               this.defaults =UIManager.getDefaults()
                this.laf = new NimbusLookAndFeel();
-               this.defaults = this.laf.getDefaults();
-
+               try {
+                       UIManager.setLookAndFeel(this.laf);
+               }
+               catch (javax.swing.UnsupportedLookAndFeelException ue){
+               
+               }
                this.defaults.put("defaultFont", loadFonts());
                this.defaults.put("iconFont", loadFontAwesomeFonts());
                this.defaults.put("defaultStroke", new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));

Also please fix this in older versions (v1.0.4 and 1.0.3)

Thanks.

Currently i can use java -jar -Dswing.defaultlaf=javax.swing.plaf.nimbus.NimbusLookAndFeel snowflake-v1.0.4.jar to bypass this error.

[Hot-key]

I found a typo in error bypass command plat => plaf java -jar -Dswing.defaultlaf=javax.swing.plaf.nimbus.NimbusLookAndFeel snowflake-v1.0.4.jar to bypass this error.