读入inputstream后删除文件

File file = new File("yourFilePath");
InputStream is = new FileInputStream(file);

try {
    // 读取文件内容
    byte[] content = new byte[(int) file.length()];
    is.read(content);
} finally {
    is.close();
}

if(file.delete()) {
    System.out.println("文件已被删除");
} else {
    System.out.println("文件删除失败");
}