//讀取一個.java檔案，並列印在控制檯上
import java.io.*;
class FileReaderTest
{
    public static void main(String[] args) throws IOException
    {
        FileReader fr = new FileReader("DateDemo.java");
         
        char[] buf = new char[1024];
         
        int num = 0;
         
        while((num=fr.read(buf))!=-1)
        {
            System.out.print(new String(buf,0,num));
        }
         
        fr.close();
    }
}