Java中的水印Excel表格
Watermarks can be added to the documents either to protect the document from piracy, or to show any sumbol or message. In other posts, we discussed ways to watermark different [documents][1], [images][2], and [presentations][3]. In this article, you will learn how to add watermark to Excel workbooks in different ways in Java. We will be applyling watermarks separately using each approach. 本文涵盖以下主题：
- Java的水印API * 添加文本水印到 Excel 表格 * 将水印应用到特定的 Excel 工作表 * 将水印添加到 Excel 工作表作为背景