Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....TextFragmentAbsorber 类中 Ellipse 类已实现: 构造函数: public Ellipse(float left, float...以下代码片段显示了如何添加椭圆: String outFile = "Ellipse.pdf" ; Document doc = new Document...