Solve a small problem in eclipse

Just written in eclipseCodeWhen you press the wrong shortcut key or keyboard, this code appears, showing:

 

There are some punctuation marks, and even if you delete it, it will still appear when you write the code again. Restart eclipse. Finally, when talking with netizens, he provided me a solution (in eclipse, click window ---> preferences, expand it, as shown in, and then click texteditors under editors, there will be some display information on the right side. Remove the check box before "show whitespace characters", as shown in: