markdown简单语法

primary title

# primary title

The secondary title

## The secondary title

---

font

bold

**bold**

---

italic

*italic*

---

both

***both***

---

strikethrough

~~strikethrough~~

---

quote

quote

> quote

---

image


---

hyperlink

google

[google](www.google.com)

---

serial

1.+whitespace

---

'-' +whitespace

---

table

use | to split attribute

warn: no null string between every tow lines

---

code

public class Main{
    public static void main(String[] args) {
        System.out.println("Hello world");
    }
}

``` java
public class Main{
    public static void main(String[] args) {
        System.out.println("Hello world");
    }
}