java檔案相關（檔案追加內容、檔案內容清空、檔案內容讀取）
阿新 • • 發佈：2019-01-23
public static List<String> readInfoFromFile(String fileName) {
File file =new File(fileName);
if(!file.exists()) {
return null;
}
List<String> resultStr =new ArrayList<String>();
try {
BufferedReader bufferedReader =new BufferedReader(new FileReader(file));
String str =null;
while(null !=(str=bufferedReader.readLine())) {
resultStr.add(str);
}
}catch (IOException e) {
e.printStackTrace();
}
return resultStr;
}
File file =new File(fileName);
if(!file.exists()) {
return null;
}
List<String> resultStr =new ArrayList<String>();
try {
BufferedReader bufferedReader =new BufferedReader(new FileReader(file));
String str =null;
while(null !=(str=bufferedReader.readLine())) {
resultStr.add(str);
}
}catch (IOException e) {
e.printStackTrace();
}
return resultStr;
}