create a new class do not appear right click menu eclipse

Try

File --> New --> (Then choose what you want)

Specify the Source folder and package.

You are in the Debug Perspective (see What is a Perspective?). You can switch back to the Java or JEE perspective (where most development activities are typically performed) by using the perspective switcher toolbar in the upper-right corner of the Eclipse window.

I suggest you learn about the use of Perspectives in Eclipse.

1. Select menu Window -> Perspective -> Customize Perspective....
2. Select Menu Visibility tab.
3. Select tree node File -> New.
4. Toggle check box of menu items as you like.