IO中的字节流练习题

IO中的字节流练习

1. FileInputStream  FileOutputStream通过字节流来读写文件

public static void main(String[] args){File f = new File("d:\\dmeo.txt");String studentName = "TOM";int age = 20;double totalScore = 600.0f;PrintStream ps = null;try {ps = new PrintStream(new FileOutputStream(f));} catch (FileNotFoundException e) {e.printStackTrace();}//格式化后输出ps.printf("姓名：%s , 年龄：%d , 总分：%3.1f",studentName,age,totalScore);}