RowFilter and CellFilter are normally used to get or scan for complex search condition
NTable ntable = NTable.openTable(...);
RowFilter rowFilter = new RowFilter(new Row.Key("rk1"), OP_LIKE);
CellFilter cellFilter = new CellFilter("Column1");
cellFilter.setStartTimestamp(Long.MIN_VALUE);
cellFilter.setEndTimestamp(Long.MAX_VALUE);
rowFilter.addCellFilter(cellFilter);
Row[] rows = ntable.gets(rowFilter);