关于读文件的问题

[liangqi2008]

各位大大，我写了一个读txt文件的小程序，但是现在我发现他会重复的读取文件内容，不清楚为什么，请各位多多指教
代码如下：

public void read(String filename )
    {
    	 FileInputStream fIn = null;  
         InputStreamReader isr = null;  
         int i=0;
         char[] inputBuffer = new char[255];  
         String data;  
         File   file     =   new   File(filename);
        String   encoding   =   getFileEncode(filename);
         try{
         	fIn=new   FileInputStream(file); 	
         	isr = new InputStreamReader(fIn,encoding);
         	i=isr.read(inputBuffer);
     		data = new String(inputBuffer,0,i);
     		if(data!=null){
     			while(i!=-1){
             		i=isr.read(inputBuffer);
             		data = data+new String(inputBuffer);            	
             	}
     			fileread.setText(data);     			
     		}
     		//else
     		//	fileread.setText(data);
         	
         	
         	}
         catch (Exception e) {   
         e.printStackTrace();  
         fileread.setText("can not open the file\n");
         }  
         finally  
         {  
         try {  
         isr.close();  
         fIn.close();  
         } catch (IOException e) {  
         e.printStackTrace();  
         }  
         }  
    }

[SmallHero007]

public void read(String filename )
    {
         FileInputStream fIn = null;  
         InputStreamReader isr = null;  
         int i=0;
         char[] inputBuffer = new char[255];  
         String data;  
         File   file     =   new   File(filename);
        String   encoding   =   getFileEncode(filename);
         try{
             fIn=new   FileInputStream(file);     
             isr = new InputStreamReader(fIn,encoding);
             i=isr.read(inputBuffer);
             data = "";
          
                 while(i!=-1){
                     i=isr.read(inputBuffer);
                     data = data+new String(inputBuffer);                
                 }
                 fileread.setText(data);                 
             }
         catch (Exception e) {   
         e.printStackTrace();  
         fileread.setText("can not open the file\n");
         }  
         finally  
         {  
         try {  
         isr.close();  
         fIn.close();  
         } catch (IOException e) {  
         e.printStackTrace();  
         }  
         }  
    }

楼主看看这样行不行？