The parent parameter is the parent directory of the child file name or relative file path. Where parent is a File instance, it is a directory file. Where parent is a String, it's simply that directory in pathname terms.

Sep 12, 2022 · I noticed during an inheritance exercise in class today that I was writing child classes under the parent class file, while the TA, when showing his solution, wrote his child classes in their own separate file.

Jan 2, 2025 · File (File parent, String child): Creates a new File instance from a parent abstract pathname and a child pathname string. File (String pathname): Creates a new File instance by converting the given pathname string into an abstract pathname.

Apr 12, 2018 · Use File's getParentFile() method and String.lastIndexOf() to retrieve just the immediate parent directory. Mark's comment is a better solution than lastIndexOf() : file.getParentFile().getName();

Jul 25, 2022 · JAVA.IO.File类. 概述:文件和目录(文件夹)路径名的抽象表示形式; 1、File类中的构造方法. 构造方法： File(String pathname)：根据一个路径得到File对象; File(String parent, String child):根据一个目录和一个子文件/目录得到File对象

Jul 9, 2024 · The parent parameter serves as the parent directory of the child file name or relative file path. This parameter can be either a File instance representing a directory file or a String denoting a directory in terms of pathname. File Instance as Parent: When parent is a File instance, it specifically refers to a directory file.

If parent is null then the new File instance is created as if by invoking the single-argument File constructor on the given child pathname string. Otherwise the parent pathname string is taken to denote a directory, and the child pathname string is taken to denote either a directory or a file.

Jan 30, 2019 · Return value: The function returns File object which is the Parent file of the given File object. Below programs will illustrate the use of the getParentFile() function: Example 1: We are given a file object of a file, we have to get the Parent file of the file object.

Nov 22, 2011 · Java 7 introduced java.nio.file.Path as a possible replacement for java.io.File. With File, when I access a file under a specific, I would do: File parent = new File("c:\\tmp"); File child = new File(parent, "child"); // this accesses c:\tmp\child

In the following code shows how to use File.File(File parent, String child) constructor.