<dependency> <groupId>org.jxls</groupId> <artifactId>jxls-core</artifactId> <version>2.8.0</version> </dependency> try(InputStream is = new FileInputStream("template.xls")){ try(OutputStream os = new FileOutputStream("output.xls")){ Context context = new Context(); context.putVar("name", names); JxlsHelper.getInstance().processTemplate(is, os, context); } }