[Java知识库]java读取文件，每行读取，然后替换指定的内容 删除指定的行数：

读取文件，每行读取，然后替换指定的内容 删除指定的行数：

public static void ChangeFile (String filePath, String outPath) throws IOException {
try {
BufferedReader bufReader = new BufferedReader(new InputStreamReader(new FileInputStream(new File(filePath))));//数据流读取文件

			StringBuffer strBuffer = new StringBuffer();
			String empty = "";
			String tihuan = "";
			List<String> arrList = new ArrayList<>();
			for (String temp = null; (temp = bufReader.readLine()) != null; temp = null) {
				if(temp.contains("\"PUBLIC\".")) {
					temp = temp.replace("\"PUBLIC\"."," ");
				}
				if(temp.contains("\"")) {
					temp = temp.replace("\"","'");
				}
				arrList.add(temp);

			}
			//删除22行之前的数据
			arrList = arrList.subList(21,arrList.size());
			for (String str : arrList){
				strBuffer.append(str);
				strBuffer.append(System.getProperty("line.separator"));//行与行之间的分割
			}
			bufReader.close();
			PrintWriter printWriter = new PrintWriter(outPath);//替换后输出的文件位置
			printWriter.write(strBuffer.toString().toCharArray());
			printWriter.flush();
			printWriter.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}