/ 2017-10-31
字节流:
//一个字节一个字节的读写
FileInputStream in=new FileInputStream("源文件");
FileOutputStream out=new FileOutputStream("目标文件");
......
in.close();
out.close();
首先要记住,一旦使用了IO流最后一定要记得关闭,这是常识。
//利用缓冲区,高效的读取字节
BufferedInputStream in=new BufferedInputStream(new FileInputStream("源文件");
BufferedOutputStream out=new BufferedOutputStream(new FileOutputStream("目标文件");
......
in.close();
out.close();
字符流:
InputStreamReader isr=new InputStreamReader(new FileInputStream("源文件路径"),"设置编码");
OutputStreamWriter osw=new OutputStreamWriter(new FileOutputStream("目标文件路径"),"设置编码");
......
osw.close();
isr.close();
也可以这样写:
FileReader fr=new FileReader("源文件路径");
FileWriter fw=new FileWriter("目标文件路径");
......
fr.close();
fw.close();
//利用缓冲区,高效的读取字符
BufferedReader br=new BufferedReader(new FileReade("源文件路径");
PrintWriter pw=new PrintWriter("目标文件路径");
......
br.close();
pw.close();
序列化和反序列化:
//对象的序列化
ObjectOutputStream oos=new ObjectOutputStream(new FileOutputStream(file));
这里的file指的是 String file="文件在项目中的路径";
//对象的反序列化
ObjectInputStream ois=new ObjectInputStream(new FileInputStream(file));
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