[Eclipse] "Syntax error, insert"} "to complete" error solution

Background: When I am learning Java online, I see a sample code is better, so copy and paste into eclipse to see the results of the compilation. Results The eclipse reported "Syntax error, insert"} "to complete" errors. As shown in the following:

After the lookup, there is no missing "}" in the code, and there is no syntax error. Often repeatedly looking for problems, and finally found that the cause of the error is that during the copy process, the space-like invisible characters in front of the curly braces are not deleted . After the white line is deleted, the error disappears.

[Eclipse] "Syntax error, insert"} "to complete" error solution