如果还有10行，如何只打印文件内容？

Question

如果文件内容包含10行以上，我想打印文件内容

我已尝试过此代码，但无效

import java.io.*;
public class FileExampleOne
{
    public static void main(String args[]) //throws IOException
    {
        //open a file textual for reading
        BufferedReader inFile=null;
        try
        {
            FileReader   in = new FileReader("plz.txt");
            inFile = new BufferedReader(in);

            int line = 0;
            for(String x=inFile.readLine(); x!= null ; x=inFile.readLine())
            {
                line++;
                // System.out.println (x);
                //* it must be something here I guess ...

                if(line>=10)
                {
                    String y=inFile.readLine();
                    while(y!= null)
                    {
                        System.out.println( y);
                        y=inFile.readLine();
                    }
                }
            }
        }//try
        catch(FileNotFoundException e)
        {
            System.out.println("file error "+e.getMessage());
        }
        catch(IOException e)
        {
            System.out.println("io error "+e.getMessage());
        }
        finally
        {
            try
            {
                inFile.close();
                System.out.println("file is now closed");
            }//try
            catch(IOException e)
            {
                System.out.println("error in finally");
            }//catch
        }
    }
}

Answer 1

你可以这样做：

BufferedReader reader = null;
    try {
        reader = new BufferedReader(new FileReader("path"));
        String line = null;
        int count = 0;
        while ((reader.readLine()) != null && count < 11) {
            count++;
        }
        if (count > 10) {
            reader = new BufferedReader(new FileReader("path"));
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }
        } else {
            System.out.println(" the file must have at least 10 lines");
        }
        System.out.println("done");
    } catch (Exception e) {
        e.printStackTrace();
    }