java.lang.UnsupportedOperationException not able to convert pdf text to csv

[samiya03]

I dont see commas when test your file src/test/resources/technology/tabula/eu-002.pdf using java. So i am getting out the rectangle and trying to extract , but getting UnsupportedOperationException. // the algorithm we're going to be testing NurminenDetectionAlgorithm detectionAlgorithm = new NurminenDetectionAlgorithm();

				List<Rectangle> tablesOnPage = detectionAlgorithm.detect(page);
				
				for (int j = 0; j < tablesOnPage.size(); j++) {
					Rectangle rectangle = tablesOnPage.get(j);						
					Ruling ruling=new Ruling(
							(float) (rectangle.getTop() / 100 * page.getHeight()),
							(float) (rectangle.getLeft() / 100 * page.getWidth()), (float) (rectangle.getWidth() / 100 * page.getWidth()),
							(float) (rectangle.getHeight() / 100 * page.getHeight())
							);
					List<Ruling> rules=new ArrayList<>();	
					
					rules.add(ruling);
					BasicExtractionAlgorithm bea = new BasicExtractionAlgorithm(rules);
					
					Table table=bea.extract(page).get(j);
					(new CSVWriter()).write(sw, table);