import static org.junit.Assert.assertNotNull;
import java.text.DecimalFormat;
+import java.text.DecimalFormatSymbols;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
+import java.util.Locale;
import java.util.Optional;
import java.util.Random;
import java.util.Set;
Grid<Person> grid = new Grid<>(Person.class);
grid.removeColumn("born");
- grid.addColumn("born", new NumberRenderer(new DecimalFormat("#,###")));
+ grid.addColumn("born", new NumberRenderer(new DecimalFormat("#,###",
+ DecimalFormatSymbols.getInstance(Locale.US))));
Person person = new Person("Name", 2017);