java读取文本文件

下面的代码是读取文本文件的例子，程序会读取text.txt文件，并将它的内容显示出来。

 

import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileReader;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 
public class ReadTextFileExample
{
    public static void main(String[] args)
    {
        File file = new File("test.txt");
        StringBuffer contents = new StringBuffer();
        BufferedReader reader = null;
 
        try
        {
            reader = new BufferedReader(new FileReader(file));
            String text = null;
 
            // repeat until all lines is read
            while ((text = reader.readLine()) != null)
            {
                contents.append(text)
                    .append(System.getProperty(
                        "line.separator"));
            }
        } catch (FileNotFoundException e)
        {
            e.printStackTrace();
        } catch (IOException e)
        {
            e.printStackTrace();
        } finally
        {
            try
            {
                if (reader != null)
                {
                    reader.close();
                }
            } catch (IOException e)
            {
                e.printStackTrace();
            }
        }
         
        // show file contents here
        System.out.println(contents.toString());
    }
}