学习io流之前,先要了解File类。
File类:代表文件和文件夹的抽象路径表示。
构造函数
new File(String pathname);
new File(String parent,String child);
new File(File parent,String child);
IO:顶级抽象父类:InputStream 字节输入流、读取文件时需先关联源文件 new File();
FileInputStream;
FilterInputStream;
BufferedInputStream; BufferedInputStream bis = new BufferedInputStream(new FileInputStream("E:\test\1.txt");
OutputStream 字节输出流、写出文件时需先关联目标文件 new File();
FileOutputStream;
FilterOutputStream;
BufferedOutputStream; BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("E:\test\1.txt");