Java 示例 - 父目录

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  问题描述

  如何获取文件的父目录？
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  解决方案

  下面的例子展示了如何使用 File 类的 file.getParent() 方法获取文件的父目录。

  
  import java.io.File;
  public class Main {
     public static void main(String[] args) { 
        File file = new File("C:/File/demo.txt");
        String strParentDirectory = file.getParent();
        System.out.println("Parent directory is : " + strParentDirectory);
     }
  }
  

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  结果

  上面的代码示例将产生以下结果。

  
  Parent directory is : File
  

  下面是另一个获取文件父目录的例子

  
  import java.io.File;
  import java.util.Scanner;
  public class CheckParentDirectory { 
     public static void main(String args[]) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter the file path");
        String filePath = scanner.next();
        File fileToTest = new File(filePath);
        
        if (!fileToTest.isDirectory()) {
           System.out.println("This is File");
           System.out.println("Parent Folder of this file is :" + fileToTest.getParent());
        } else {
           System.out.println("This is Directory");
           System.out.println(
              "Parent Folder of this directory is :" + fileToTest.getParent());
        } 
     }
  }
  

  上面的代码示例将产生以下结果。

  
  Enter the file path
  C:\Apache24\htdocs\javaexamples\dir_modification.htm
  This is File
  Parent Folder of this file is :C:\Apache24\htdocs\javaexamples