util实现Java图片水印添加功能，有添加图片水印和文字水印，可以设置水印位置，透明度、设置对线段锯齿状边缘处理、水印图片的路径，水印一般格式是gif，png,这种图片可以设置透明度、水印旋转等，可以参考代码加以改进做成小工具。-Add picture watermark to achieve Java util function, add image watermark and text watermark, you can set the watermark position, transparency, set the jagged edges of the line processing, the path to watermark images, watermark general format is gif, png, you can set the transparency of this picture , watermark rotation, can refer to the code to be made ​ ​ to improve the gadget.