itext - 文档是抽象的；不能实例化

Question

try {
  Document document = new Document();
  PdfWriter.getInstance(document, new FileOutputStream("Report.pdf"));
  document.open();
  document.add(new Paragraph("Hello World"));
  document.close();
} catch (Exception e) {
  JOptionPane.showMessageDialog(null, e);
}

这是我用 NetBeans 编写的代码，但第一行出现错误:

error 1 in 1st line: Document is abstract; cannot be instantiated 

error 2 in 2nd line cannot find symbol ,symbol: variable PdfWriter

Answer 1

您显然导入了错误的 Document 类，正确的导入是 com.itextpdf.text.Document ，更新您的导入语句，这将得到修复。