讀.txt文件問題 高分請教 幫忙看看 謝謝

Question

public void readFile(){
try{
DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream("test.txt")));
BufferedReader inbr = new BufferedReader(new InputStreamReader(in));
String temp = in.readLine().trim();
                  System.out.println(temp);
in.close();
}
catch(Exception e){
}
}

Answer 1

import java.io.*;
class Demo{
public static void main(String[] args){
     try{
     BufferedReader br = new BufferedReader(
     new FileReader("test.txt"));    
     System.out.println(br.readLine().trim());
     }catch(IOException e){
     e.printStackTrace();
     }
    }
}

Answer 2

import java.io.*;public class ReadTextFile
{ public static String readTextFile(String fileName)
{
BufferedReader br = null;
try {
br = new BufferedReader(new FileReader(fileName));

String line = null;
StringBuffer sb = new StringBuffer();
while((line=br.readLine())!=null)
{
sb.append(line);
}

br.close();

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

return sb.toString();
}

public static void main(String[] args)
{
String fileName = "c:\\test.txt";
System.out.println( readTextFile(fileName) );

}

}