Java filenotfoundexception问题

提示我路径未找到，文件名是自己键入的，代码如下：

public class CSVParser extends ConsoleProgram {
public void run(){
    ArrayList<String> result = new ArrayList<String>();
    String filename = openfile("Enter the filename :");
    int columnIndex = readInt("Enter the column index :");
    result = extractColumn(filename,columnIndex);
    println(result);    
}
//读取文件，若文件不存在则提示，重新键入文件名
private String openfile(String prompt){
    BufferedReader rd = null;
    while(rd==null){
        try{
            String name = readLine(prompt);
            rd = new BufferedReader(new FileReader(name));          
        }catch(IOException e){
            println("bad file.The file doesn't exist.");
        }
    }
    return getName();   
}

//根据文件名和所要获取的列数输出该列所有内容

private ArrayList extractColumn(String filename, int columnIndex) {
 ArrayList result = new ArrayList();
 try {
        BufferedReader rd = new BufferedReader(new FileReader(filename));   
        String line="";
        while((line = rd.readLine()) != null){              
            String str = (fieldsIn(line).get(columnIndex-1));           
            result.add(str);            
            }rd.close();
}catch (IOException e){ 
    e.printStackTrace();
    throw new RuntimeException(e);
        }               
    return result;
}
}