JAva---バッファ入出力ストリームBufferedInputStreamとBufferedOutputStream

 ：t1() ， ；

1、 buffer buffer 

2、buffer 

3、     （ Object       ）

4、 ， 

package ThreadIO2_1.IO.buffer;

import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class BufferedStreamDemo {
	public static void main(String[] args) {
		try {
			//t1();// 
			//t2();// 
			//t3();// 
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private static void t2() throws Exception {
		long t1=System.currentTimeMillis();
		DataInputStream din=new DataInputStream(new FileInputStream("b.txt"));
		String str=null;
		while((str=din.readLine())!=null){
			System.out.println(str);
		}
		long t2=System.currentTimeMillis();
		System.out.println(" 2 ( ):"+(t2-t1));
		
	}

	private static void t1() throws Exception {
		long t1=System.currentTimeMillis();
		DataInputStream din=new DataInputStream(new BufferedInputStream(new FileInputStream("b.txt")));
		String str=null;
		while((str=din.readLine())!=null){
			System.out.println(str);
		}
		long t2=System.currentTimeMillis();
		System.out.println(" 1 ( )："+(t2-t1));
	}
	private static void t3() throws Exception {
		long t1=System.currentTimeMillis();
		BufferedInputStream bin=new BufferedInputStream(new DataInputStream(new FileInputStream("b.txt")));
		byte[] buf=new byte[20];
		int n=0;
		while ((n = bin.read(buf)) != -1) {
			System.out.println(new String(buf,0,n));
		}
		long t2 = System.currentTimeMillis();
		System.out.println(" 3 ( ):" + (t2 - t1));
	 
	}	
}