在java中使用BufferedWriter写入文件 [英] Write file using BufferedWriter in java

问题描述

我正在做一个实验室，我们必须在外部文件中阅读，对数据进行一些统计，然后使用统计信息创建并写入一个新的文件。我的程序中的一切工作，除了写文件，我不明白为什么我的方法将无法工作。

  BufferedWriter writer; 
 
 public void writeStats（int word，int numSent，int short，int longest，int average）
 {
 
 try 
 {
 File file = new File（jefferson_stats.txt）; 
 file.createNewFile（）; 
 
 writer = new BufferedWriter（new FileWriter（file））; 
 
 writer.write（字数：+字）; 
 writer.newLine（）; 
 writer.write（句数：+ numSent）; 
 writer.newLine（）; 
 writer.write（最短句：+最短+字）; 
 writer.newLine（）; 
 writer.write（最长句：+最长+字）; 
 writer.newLine（）; 
 writer.write（Average sentence：+ average +words）; 
 
} 
 catch（FileNotFoundException e）
 {
 System.out.println（File Not Found）; 
 System.exit（1）; 
} 
 catch（IOException e）
 {
 System.out.println（something messed up）; 
 System.exit（1）; 
} 
} 
  

解决方案

你必须刷新和关闭你的作家

  writer.flush（）; 
 writer.close（）; 
  

I am doing a lab where we have to read in an external file, take some statistics on the data, and then create and write a new file with the stats. Everything in my program works except for writing the file, which I cannot understand why my method won't work.

BufferedWriter writer;

public void writeStats(int word,int numSent, int shortest, int longest, int average) 
{

    try
    {
    File file = new File("jefferson_stats.txt");
    file.createNewFile();

    writer = new BufferedWriter(new FileWriter(file));

    writer.write("Number of words: " + word );
    writer.newLine();
    writer.write("Number of sentences: " + numSent );
    writer.newLine();
    writer.write("Shortest sentence: " + shortest + " words");
    writer.newLine();
    writer.write("Longest sentence: " + longest + " words");
    writer.newLine();
    writer.write("Average sentence: " + average + " words");

    }
    catch(FileNotFoundException e)
    {
        System.out.println("File Not Found");
        System.exit( 1 );
    }
    catch(IOException e)
    {
        System.out.println("something messed up");
        System.exit( 1 );
    }
}

解决方案

You have to flush and close your Writer

writer.flush();
writer.close();

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