JTable table = new JTable(data, columnNames); RowSorterIn this example, we create a JTable with data and column names provided as arguments. Then, we use the getRowSorter() method to get the current row sorter object associated with this table. The RowSorter object provides functionalities to sort, filter, and select rows in the table. The javax.swing package library is required to use the JTable component and other swing components in Java.sorter = table.getRowSorter();