1. Date Types

   1. TEXT INTEGER NUMERIC REAL NONE

   2. String Datatypes -All string datatypes in SQLite are converted to a TEXT datatype. If you try to specify a size for a string datatype, SQLite will ignore it, as it does not allow size restrictions on string datatypes.

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1. 深入了解需要精读Java Generics and Collections

2. 泛读材料40 Java Collections Interview Questions and Answers

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class ListTest {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();

        list.add("Robin");
        list.add("TianYa");
        list.add("Generic");
        
        //Three Way Iterator List
        System.out.println("***For Loop***");
        for (int i = 0; i < list.size(); i++) {
            System.out.println(list.get(i));
        }
        
        System.out.println("***Foreach Loop***");
        for (String n : list) {
            System.out.println(n);
        }
        
        System.out.println("***Iterator***");
        for (Iterator<String> it = list.iterator(); it.hasNext(); ) {
            System.out.println(it.next());
        }
        
        //List Reference Object
        List<Object> listObjcet = new ArrayList<>();
        
        listObjcet.add(new PersonInfo(1, "Robin", "Java"));
        listObjcet.add(new PersonInfo(2, "Tianya", "C++"));
        listObjcet.add(new PersonInfo(3, "Collection", "C"));

        System.out.println("***For Loop Object***");
        for (Iterator<Object> it = listObjcet.iterator(); it.hasNext(); ) {
            System.out.println(it.next());
        }
        
    }

}
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Shell之固定格式图片批量下载

情况设定：

1. 已知Url结构

2. 已知图片名称

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Discrete Math Chapter 4

1. 最大公约数

2. 埃拉托斯特尼 计算100以内的素数

3. 命令式阶乘，声明式阶乘

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Laravel Email Contact

1. Email Config

   1. Config

   2. Email Send Validate

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shadowsocks服务器和苹果MacOS客户端教程

I 推荐Linode作为VPS供应商

II 安装shadowsocks 服务器端

Ubuntu
apt-get install python-pip 
pip install shadowsocks
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玩转Ubuntu 环境变量

1. 查看环境变量

2. 设置环境变量

   • Locale

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离散数学第三章算法之PHP实现

1. 有限序列中最大元素

2. 线性搜索 （Linear Search）

3. 二分搜索 （Binary Search）

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jQuery Practical - Fundamental-I

1. Using jQuery find all textareas, and makes a border. Then adds all paragraphs to the jQuery object to set their borders red. Go to the editor You can see the output from

   .addBorder {
          border: 2px solid red;
   }
   
   $("#button1").on("click",function() {
       if ($("textarea").hasClass("addBorder")) {
           $("textarea").removeClass("addBorder");
       } else {
           $("textarea").addClass("addBorder");
       } 
   });
   

2. Set the background color red of the following elements using jQuery

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Plesk&mailgun

1. Plesk添加订阅

   1. Add Subscribe

2. 域名商

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