Java如何在不存在文件夹的目录下创建文件

String strPath = "E://a//aa//aaa.txt"; File file = new File(strPath); if(!file.exists())){  file.file.mkdirs(); }

String strPath = "E://a//aa//aaa.txt"; File file = new File(strPath); File fileParent = file.getParentFile(); if(!fileParent.exists()){  fileParent.mkdirs(); } file.createNewFile();