Java URL 사용법

/**
 * 웹페이지 가져오기
 * URL과 저장할 파일을 입력하면
 * 사이트 내용을 가지고 와서 파일에 저장함
 *
 */
public class WebSpider {
    public static void main(String[] args){
        if(args.length != 2){
             System.out.println("사용법" : java WebSpider URL filename");
             System.exit(1);
        }
        URL url = null;
        try{
            url = new URL(args[0]);
        }catch(MalformedURLException e1){
            System.out.println("잘못된 URL 형식입니다.");
            System.out.println(e1);
            System.exit(1);
        }
  
        FileOutputStream fos = null;
        try{
            InputStream in = url.openStream();
            fos = new FileOutputStream(args[1]);
  
            byte[] buffer = new byte[512];
            int readCount = 0;
   
            System.out.println("읽어 오기 시작함 ...");
            while((readCount = in.read(buffer)) != -1){
                fos.write(buffer,0,readCount);
            }
            System.out.println(args[1] + " 파일에 모두 저장했습니다.");
        }catch(Exception ex){
            System.out.println(ex);
        }finally{
            try{
                if(fos != null) fos.close();
            }catch(Exception e){}
        }
    }
}

git 명령어

$ git remote -v
origin git@github.daumkakao.com:dennis-lee/vertx-sample.git (fetch)
origin git@github.daumkakao.com:dennis-lee/vertx-sample.git (push)


$ git log -2
commit 69b4285dd8d1df3debdc24c24a9ee2c22c797931
Author: dennis.lee 
Date:   Mon May 29 18:29:43 2017 +0900

    json prettify

commit de8c8a8f8a55a4b9a4a89d13cfa04e5001004c1e
Author: dennis.lee 
Date:   Mon May 29 18:17:22 2017 +0900

    added BodyHandler



$ git status
On branch master
Your branch is up-to-date with 'origin/master'.
Changes not staged for commit:
  (use "git add ..." to update what will be committed)
  (use "git checkout -- ..." to discard changes in working directory)

 modified:   pom.xml

Untracked files:
  (use "git add ..." to include in what will be committed)

 src/main/java/net/sample/

no changes added to commit (use "git add" and/or "git commit -a")


$ git branch b1
$ git branch
  b1
* master

$ git checkout -b b2
M pom.xml
Switched to a new branch 'b2'

$ git branch
  b1
* b2
  master


$ git branch --delete b1
Deleted branch b1 (was 69b4285).

$ git branch -d b2
Deleted branch b2 (was 69b4285).

$ git branch
* master

$ git push origin --delete b1
To github.daumkakao.com:dennis-lee/prada.git
 - [deleted]         b1

SSH Key 생성

ssh-keygen -t rsa -C "email@email.com"