I couldn't run the programs I written in java ,when I am opening them after saving them.But they where running fine before saving .

Answer 1

Be clear . Couldn't able to understand what you are saying?
are you saying you cannot able to run your programs on sololearn code playground?

Answer 2

no on my computer

Answer 3

check if path is set?
copy the path Java bin directory and go to mycomputer->properties --advanced settings --environmental variables --add new --paste the path over there with name of PATH and save.

Answer 4

Go and search on Google that how to set path in Java for more info