java代码如何实现对文本文件进行存储和读取呢?

信息存入文件的实现思路

FileOutputStream writerStream = new FileOutputStream("test.txt");
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(writerStream, "UTF-8"));
writer.write("文件内容");
writer.close();

从文件取出信息

File file=new File("test.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8"));
String line = null;
while ((line = br.readLine()) != null) {
	System.out.println(line);
}
br.close();