bug in java.text.SimpleDateFormat.parse(..) #291

TypeError: Cannot read properties of null (reading 'hashCode$')
TypeError: Cannot read properties of null (reading 'hashCode$')
at Object.eval (swingjs/j2s/java/util/ResourceBundle.js:333:33)
at Object.eval [as c$$S$java_util_Locale$O] (swingjs/j2s/java/util/ResourceBundle.js:281:47)
at Clazz.new_ (http://localhost:8000/swingjs/swingjs2.js:15503:19)
at Function.eval [as getBundleImpl$S$java_util_Locale$O$java_util_ResourceBundle_Control] (swingjs/j2s/java/util/ResourceBundle.js:80:21)
at eval (swingjs/j2s/java/util/ResourceBundle.js:64:11)
at $I$ (swingjs/j2s/sun/util/resources/LocaleData.js:1:530)
at Function.eval [as getBundle$S$java_util_Locale] (swingjs/j2s/sun/util/resources/LocaleData.js:68:8)
at Function.eval [as getDateFormatData$java_util_Locale] (swingjs/j2s/sun/util/resources/LocaleData.js:41:11)
at clazz.eval [as cacheLookup$java_util_Locale] (swingjs/j2s/java/text/DateFormatSymbols.js:140:11)
at clazz.eval (swingjs/j2s/java/text/DateFormatSymbols.js:147:17)

import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Date;

public class testCal
{
  public static void main(String[] args)
  {
    var parser = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
    try
    {
      Date timestamp = parser.parse("1970-01-01T01:00:00",
              new ParsePosition(0));
      System.out.print("Success.");
    } catch (Throwable t)
    {
      System.err.print("Failed! ");
      t.printStackTrace();
    }

  }
}