When I working with eclipse IDE I saw that in the pop-up menu that shows java proposal there is a symbol in 'S' shape a bow green dot. What does it mean ? What other symbols I can see there ?

When I working with eclipse IDE I saw that in the pop-up menu that shows java proposal there is a symbol in 'S' shape a bow green dot. What does it mean ? What other symbols I can see there ?

That "S" symbol is for a static method or variable.
If you want to learn about static keyword itself, you can begin by reading this question and its corresponding answers.
Here's a complete description of Eclipse's icons located at Outline View (the view you are referring to).