Resource
@POST
	@Path("/products")
	@Consumes(MediaType.APPLICATION_JSON)
	@Produces(MediaType.APPLICATION_JSON)
	public Products addProducts(Products products) throws ClassNotFoundException, SQLException{
		return ps.addProduct(products);
	}



Service

public Products addProduct(Products product) throws SQLException, ClassNotFoundException{
			Class.forName("org.postgresql.Driver");
			Connection con=DriverManager.getConnection(url,login,password);
			 String ins="insert into products values (?,?,?,?,?,?,?)";
			 PreparedStatement pst=con.prepareStatement(ins);
			    pst.setInt(1, product.prodid);
				pst.setString(2,product.productname);
				pst.setDouble(3,product.productprice);
				pst.setInt(4,product.productqty);
				pst.setString(5,product.productdescription);
				pst.setString(6,product.productcategory);
				pst.setInt(7,product.productreorder);
			 pst.executeUpdate();
			 con.close();
			 pst.close();

		 return product;
	}