IO学习

//第一步骤：导入类
import java.io.*;

class Test{
	public static void main(String[] args){
		//声明输入流引用
		FileInputStream fis = null;
		//声明输出流引用
		FileOutputStream fos = null;
		try{
			//生成代表输入流的对象
			fis = new FileInputStream("g:/javaTest/stream/from.txt");
			//生成代表输出流的对象
			fos = new FileOutputStream("g:/javaTest/stream/to.txt");
			//生成一个字节数组
			byte[] buffer = new byte[100];
			//调用输入流对象的read方法，读取数据
			int temp = fis.read(buffer,5,buffer.length - 5);
			
			fos.write(buffer,5,temp);
			
			//String s = new String(buffer);
			//s = s.trim();//去除字符串中首尾的空格和空字符
			//System.out.println(s);
		}
		catch(Exception e){
			System.out.println(e);
		}
	}
}