public class TestDB{
public static void main(String[] args)throws Exception {
File f = new File("1.txt");
if(!f.exists()){
System.out.println("文件不存在!");
return;
}
List list = new ArrayList();
Reader read = new FileReader(f);
BufferedReader br = new BufferedReader(read);
String line = br.readLine();
while(line!=null){
list.add(line);
line = br.readLine();
}