java 将字符串存到txt 并读取操作

//写入txt文件
try {
String encryptData = “helloWorld”
//写入指定文件中
BufferedWriter bw = new BufferedWriter(new FileWriter("src/text/data.txt"));
bw.write(encryptData);
bw.close();
} catch (IOException ex) {
Logger.getLogger(EncryptTest.class.getName()).log(Level.SEVERE, null, ex);
}

//从txt文件中读取数据
try {
BufferedReader br = new BufferedReader(new FileReader("src/text/data.txt"));
String demo = br.readLine();
System.out.println("读取txt文件数据：" + demo);

br.close();
} catch (IOException ex) {
Logger.getLogger(EncryptTest.class.getName()).log(Level.SEVERE, null, ex);
}