Java IO 学习摘要

import java.io.*;
public class TestReaderWriter {
	private static final String s = File.separator;
	public static void main(String[] args) 
	{
		BufferedReader br = null;
		System.out.println("-------------------BufferedReader 读取文件D:\\1.java ---------------------------");
		try{
			br = new BufferedReader(new FileReader("d:"+s+"1.java"));
			
		}catch(FileNotFoundException e){
			System.out.println("in 文件未找到！");
		}
		
		String str = null;
		try{
			while(br.readLine()!=null){
				str = br.readLine();
				System.out.println(str);
			}
			br.close();
		}catch(IOException e){
			System.out.println("读取失败！");
		}
		

		BufferedWriter bw = null;
		System.out.println("-------------------BufferedWriter 写入文件D:\\test.java ---------------------");
		try{
			bw = new BufferedWriter(new FileWriter("d:"+s+"test.java"));	
		}catch(IOException e){
			e.printStackTrace();
		}
		try{
			if(bw!=null){
				System.out.print("正在写入中");
				for(int i=0;i<100;i++){
					bw.write(i);
					try{
					Thread.sleep(500);
				}catch(InterruptedException e){
					System.out.println("线程休眠失败！");
				}
					System.out.print(".");
				}
				
				System.out.println("写入成功！");
			}
			bw.close();
		}catch(IOException e){
			System.out.println("写入失败！");
		}
		//System.out.println("Hello World!");
	}
}