Java将数据写入文件：
String filepath ="C:\test.txt";
try (FileOutputStream fos = new FileOutputStream(filepath)){
byte[] buffer = "hello world text".getBytes();
fos.write(buffer, 0, buffer.length);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Java从文本文件中读取数据
String filepath ="C:\test.txt";
try (FileInputStream fis = new FileInputStream(filepath)){
int length = (int) new File(filepath).length();
byte[] buffer = new byte[length];
fis.read(buffer, 0, length);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
日期：2020-06-02 22:15:22 来源：oir作者：oir