Java如何删除文件（代码实现详细示例） _Java如何删除文件

Java如何删除文件？别担心，Java提供了使用Java删除文件的方法进行文件处理。与任何操作系统中的正常删除操作相反, 使用java删除的文件将被永久删除, 而不会移动到垃圾回收站，所以删除文件要小心处理。
方法1：Java如何删除文件？以下是用于Java删除文件的方法

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【Java如何删除文件（代码实现详细示例）】使用java.io.File.delete()函数：删除此抽象路径名表示的文件或目录。
语法如下：

public boolean delete() Returns: true if and only if the file or directory is successfully deleted; false otherwise

// Java program to delete a file import java.io.*; public class Test { public static void main(String[ ] args) { File file = new File( "C:\\Users\\Mayank\\Desktop\\1.txt" ); if (file.delete()) { System.out.println( "File deleted successfully" ); } else { System.out.println( "Failed to delete the file" ); } } }

输出如下：

File deleted successfully

方法2：Java如何删除文件？Java删除文件使用在文件包中定义的java.nio.file.files.deleteifexists(Path p)方法：

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此方法删除文件(如果存在)。仅当目录不为空时, 它也会删除路径中提到的目录。
语法如下：

public static boolean deleteIfExists(Path path) throws IOException Parameters: path - the path to the file to delete Returns: true if the file was deleted by this method; false if the file could not be deleted because it did not exist. Throws: DirectoryNotEmptyException - if the file is a directory and could not otherwise be deleted because the directory is not empty (optional specific exception) IOException - if an I/O error occurs

// Java program to demonstrate delete using Files class import java.io.IOException; import java.nio.file.*; public class Test { public static void main(String[ ] args) { try { Files.deleteIfExists(Paths.get("C:\\Users\\Mayank\\Desktop\\ 445 .txt")); } catch (NoSuchFileException e) { System.out.println( "No such file/directory exists" ); } catch (DirectoryNotEmptyException e) { System.out.println( "Directory is not empty." ); } catch (IOException e) { System.out.println( "Invalid permissions." ); }System.out.println( "Deletion successful." ); } }

输出如下：