java - Find a line in a file and remove it

파일에 다음과 같은 내용이 있습니다.

aaa
bbb
ccc
ddd

여기서 bbb를 삭제하는 방법은 다음과 같습니다.

 

File inputFile = new File("myFile.txt");
File tempFile = new File("myTempFile.txt");

BufferedReader reader = new BufferedReader(new FileReader(inputFile));
BufferedWriter writer = new BufferedWriter(new FileWriter(tempFile));

String lineToRemove = "bbb";
String currentLine;

while((currentLine = reader.readLine()) != null) {
  // trim newline when comparing with lineToRemove
  String trimmedLine = currentLine.trim();
  if(trimmedLine.equals(lineToRemove)) continue;
  writer.write(currentLine + System.getProperty("line.separator"));
}
writer.close(); 
reader.close(); 
boolean successful = tempFile.renameTo(inputFile);

 

 

출처: https://stackoverflow.com/questions/1377279/find-a-line-in-a-file-and-remove-it