我唯一的问题是我在评论中出现错误。我愿意将索引1处的字符串(token [])数据发送到主目录中的Createnewfile()方法。我做不到请指导我该怎么做。

import java.util.*;
import java.io.File;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;


class CreateFile
{
    public static void main( String[] args )
    {

    Scanner S = new Scanner (System.in);
    System.out.println ("FileExplorer");

    System.out.println ("Select:");
    System.out.println ("1.create new file");
    System.out.println("2. Enter text in the new created file ");
    System.out.println ("3.View List");
    System.out.println ("4.Display contents of particular file");
    System.out.println ("5.Delete a selected file");
    System.out.println ("6.Copy files to other directory");
    System.out.println ("7.Cut files from one directory to other");

    System.out.println ("My File Explorer:");
    String phrase = S.nextLine();
    String delims = "[ ]+";
    String[] tokens = phrase.split(delims);
    for (int i = 0; i < tokens.length; i++)
        System.out.println(tokens[i]);

    if (tokens[0].equals ( "createfile") )
    {
        System.out.println ("Create");
        Createnewfile( tokens[] );    //I get an error here, please tell me how to send
                                                  //the tokens[1] index 1 string to my  createnewfile function
    }
    if (tokens[0].equals ( "entertext") )
    {
        System.out.println ("entering text");
        String St = tokens[1];
        Entertext(St);
    }
    if (tokens[0].equals ( "showcontent") )
    {
        System.out.println ("Displaying contents");
    }
    if (tokens[0].equals ( "List") )
    {
        System.out.println ("Listing all .txt files");
    }
    if (tokens[0].equals ( "delete") )
    {
        System.out.println ("Deleting the selected file");
    }

}

public void Createnewfile( String [] tokens)
{
    try
        {

          File file = new File(tokens[1]);

          if (file.createNewFile())
          {
            System.out.println("File is created!");
          }
          else
          {
            System.out.println("File already exists.");
          }

        }
        catch (Exception e)
        {
          e.printStackTrace();
        }
}


public static void Entertext(String St)
{
    try
        {
            Scanner S = new Scanner (System.in);
            String content = S.nextLine();
            File file = new File( St);
            FileWriter fw = new FileWriter(file.getAbsoluteFile());
            BufferedWriter bw = new BufferedWriter(fw);
            bw.write(content);
            bw.close();

            System.out.println("Done");

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

最佳答案

如果您要尝试使用数组引用,只需丢失[]即可:

Createnewfile(tokens);


但是,这不只是通过tokens[1]

奇怪的是,您的Createnewfile方法始终使用tokens[1]-该方法具有String参数(而不是String[])更有意义,然后可以将其称为:

Createnewfile(tokens[1]);


仅传递对要用于创建文件的字符串的引用-例如,就像您对Entertext方法所做的那样。

我也强烈建议您学习并遵循Java中的命名约定。 (因此您的方法将是createNewFileenterText等。)

09-11 17:35