Cache groupingSeparator

Author: YannickMG

src/main/java/com/cleanroommc/modularui/widgets/textfield/IntegerFieldRenderer.java

@@ -10,6 +10,7 @@
 @ApiStatus.Experimental
 class IntegerFieldRenderer extends TextFieldRenderer {
     private static final DecimalFormat INTEGER_FIELD_FORMAT = new DecimalFormat("#");
+    private static final char groupingSeparator = INTEGER_FIELD_FORMAT.getDecimalFormatSymbols().getGroupingSeparator();
 
     static {
         INTEGER_FIELD_FORMAT.setGroupingUsed(true);
@@ -36,7 +37,7 @@ public void draw(List<String> lines) {
 
     @Override
     protected boolean isIgnoredChar(char c) {
-        return c == INTEGER_FIELD_FORMAT.getDecimalFormatSymbols().getGroupingSeparator();
+        return c == groupingSeparator;
     }