java输入输出流

public static void main(String[] args) throws Exception {

		
	InputStream in=null;
	try {
		URL url=new URL("http://yanbh.iteye.com/admin/blogs/1987350");
			
		in=url.openStream();
			
		byte buffer[]=new byte[100000];
			
		in.read(buffer, 0, buffer.length);
			
		System.out.println(new String(buffer));
			
	} catch (MalformedURLException e) {
		e.printStackTrace();
	}
}


public static void main(String[] args) throws IOException {

		
		//生成文件目录
		File dir1=new File("D:\\dir1");
		if(!dir1.exists())
			dir1.mkdir();
		File dir2=new File(dir1,"dir2");
		if(!dir2.exists())
			dir2.mkdir();
		File dir4=new File(dir1,"dir3\\dir4");
		if(!dir4.exists())
			dir4.mkdirs();
		File file=new File(dir2,"2.txt");
		if(!file.exists())
			file.createNewFile();
		
		//解析文件目录
		File dir=new File("D:\\dir1");
		ListDir(dir);
	}
	
	public static void  ListDir(File dir){
		File[] lists=dir.listFiles();
		
		String info="目录："+dir.getName()+"(";
		
		for(int i=0;i<lists.length;i++){
			info+=lists[i].getName()+" ";
		}
		info+=")";
		
		System.out.println(info);
		
		for(int i=0;i<lists.length;i++){
			File f=lists[i];
			if(f.isFile()){
				System.out.println("文件："+f.getName()+" canRead："+f.canRead()+" lsatModified："+new Date(f.lastModified()));
			}else{
				ListDir(f);
			}
		}
		
		
	}