爲什麼不創建文件

Question

我正在創建一個目錄，然後是一個文件。問題是該目錄已創建，但文件不是。

當我這樣做，我創建和它打印出的是「成功創建新的文件：？和文件名

誰能幫助理解爲什麼

public class Main 
{ 

    public static void main(String[] args) throws IOException 
    { 
     Scanner reader = new Scanner (System.in); 
     boolean success = false; 
     GetFiles getFile = new GetFiles(); 
     System.out.println("Enter path of directory to create"); 
     String dir = reader.nextLine(); 

     // Create a new directory in Java, if it doesn't exists 
     File directory = new File(dir); 
     if(directory.exists()) 
     { 
      System.out.println("Directory already exists"); 
     } 
     else 
     { 
      System.out.println("Directory not exists, creating now"); 
      success = directory.mkdir(); 
      if(success) 
       System.out.println("Successfuly created new directory"); 
      else 
       System.out.println("Failed to create new directory"); 
     } 

     // Creatning new file in Java, only if not exists 
     System.out.println("Enter file name to be created"); 
     String filename = reader.nextLine(); 

     File f = new File(filename); 
     if(f.exists()) 
     { 
      System.out.println("File already exists"); 
     } 

     else 
     { 
      System.out.println("No such file exists, creating now"); 
      success = f.createNewFile(); 
      if(success) 
       System.out.printf("Successfully created new file: : %s%n", f); 
      else 
       System.out.printf("Failed to create new file: %s%n", f); 
     } 

     reader.close(); 
     getFile.getAllFiles(directory); 
    } 

} 

Answer 1

你代碼是完全的工作。它實際上是創建該文件。你可以看到在你的Java項目中創建的文件。

只需添加這行代碼，並根據需要，將工作。

filename = dir + "\\" + filename; 
File f = new File(filename);