Provide a fix for issue #10

Author: jsotuyod

src/main/java/net/sourceforge/pmd/util/fxdesigner/DesignerStarter.java

@@ -6,8 +6,11 @@
 
 import javax.swing.JOptionPane;
 
+import org.apache.commons.lang3.SystemUtils;
+
 import com.beust.jcommander.JCommander;
 import com.beust.jcommander.ParameterException;
+
 import javafx.application.Application;
 
 /**
@@ -68,9 +71,18 @@ public static void main(String[] args) {
 
         readParameters(args);
 
+        setSystemProperties();
         launchGui(args);
     }
 
+    private static void setSystemProperties() {
+        if (SystemUtils.IS_OS_LINUX) {
+            // On Linux, JavaFX renders text poorly by default. These settings help to aleviate the problems.
+            System.setProperty("prism.text", "t2k");
+            System.setProperty("prism.lcdtext", "true");
+        }
+    }
+
     private static String getHelpText(JCommander jCommander) {
 
         StringBuilder sb = new StringBuilder();