========
자바
========
!!FileInputStream,FileOutputStream,InputStreamReader,bufferedWriter,bufferedReader,URL
======================================
복사
import java.io.*;
class FileCopyTest
{
public static void main(String[] args)
{
try{
FileInputStream fis = new FileInputStream ("sing.jpg") ;
FileOutputStream fos = new FileOutputStream ("sing1.jpg");
int n = 0;
while ((n=fis.read())!=-1)
{
fos.write(n);
}
fos.close();
fis.close();
}catch(Exception e){}
}
}
==================================================
다른 복사
import java.io.*;
class FileCopyTest1
{
public static void main(String[] args)
{
try{
byte[] bt = new byte[1024];
FileInputStream fis = new FileInputStream ("sing.jpg") ;
FileOutputStream fos = new FileOutputStream ("sing21.jpg");
int i;
while((i=fis.read(bt))!=-1) fos.write (bt,0,i);
fos.close();
fis.close();
}catch(Exception e){}
}
}
==================================================
txt파일을 화면에 출력
import java.io.*;
class InputStreamReaderTest
{
public static void main(String[] args)
{
try{
InputStreamReader isr = new InputStreamReader(new FileInputStream("InputStreamReaderTest.java"));
int i=0;
while((i=isr.read ())!=-1){
System.out.print((char)i);
}
}catch(Exception e){}
}
}
============================================
BufferedReader를 이용하고 bufferedWriter를사용하여 파일복사
import java.io.*;
class BufferedReaderTest
{
public static void main(String[] args)
{
try{
int i;
BufferedReader br = new BufferedReader( new InputStreamReader(new FileInputStream("InputStreamReaderTest.java")));
BufferedWriter bw = new BufferedWriter (new OutputStreamWriter(new FileOutputStream("a1.java")));
String line = null;
while((line=br.readLine())!=null){
bw.write (line,0,line.length());
bw.newLine();
}
bw.close();
br.close();
}catch(Exception e){}
}
}
=====================================================
url객채 생성
inputstream 을 얻는다
inputstreamreader 얻는다
bufferedreader 생성
readline으로 모니터 출력
url로
url커낵션
===================================================
url 에 해당하는 html 카피
import java.net.*;
import java.io.*;
class URLTest
{
public static void main(String[] args)
{
try{
int i;
URL url = new URL("http://www.yahoo.co.kr/");
URLConnection uc = url.openConnection ();
InputStream is = uc.getInputStream ();
BufferedReader br = new BufferedReader( new InputStreamReader(is));
BufferedWriter bw = new BufferedWriter (new OutputStreamWriter(new FileOutputStream("a.html")));
String line = null;
while((line=br.readLine())!=null){
//System.out.println(line);
bw.write (line,0,line.length());
bw.newLine();
}
bw.close();
}catch(Exception e){}
}
}
===================================================
숙제
url 이미지 가지고와서 저장하기
==============================================
import java.io.*;
import java.net.*;
class GetURLImage
{
public static void main(String[] args)
{
try{
URL url = new URL("http://wstatic.naver.com/w/n_c600.gif");
URLConnection uc = url.openConnection ();
InputStream is = uc.getInputStream ();
BufferedInputStream bs = new BufferedInputStream(is);
FileOutputStream fos = new FileOutputStream ("a.gif");
int n = 0;
while ((n=bs.read())!=-1)
{
fos.write(n);
}
fos.close();
}catch(Exception e){}
}
}
=============================================================
주넝아???? | 네이아
http://blog.naver.com/akswnsjd1/60035968311