i want to give background color to top of the row for following table in itext how it can be done?

try
	 {
		 BufferedReader  br = new BufferedReader(new FileReader(fname));
		 no=br.readLine();
		 String[] num=no.split(",");
		 int n=num.length;
		 PdfPTable table = new PdfPTable(n);
		 table.setWidthPercentage(100);

		 BufferedReader  br1 = new BufferedReader(new FileReader(fname));
		 while ((line = br1.readLine()) != null)
		 {
			
			String line1=line;
			 String[] parts = line1.split(",");
			 for(int i=0;i<parts.length;i++)>
			 {
			  part2 = parts[i]; 
			  PdfPCell cell1 = new PdfPCell(new Paragraph(part2));
			 
			
			  
			  table.addCell(cell1);
			 }
			 
			 addEmptyLine(preface1, 1);
			
		 }
		

		 document.add(table); 
	 }
	 catch(IOException e)
	 {
		  e.printStackTrace();   

	 }