sualoi
Sua ten exit -> leave
Them lenh setTitle de lay Title cho cua so
Sửa button Exit thành Leave
Sửa lệnh selectColor();
Sửa lệnh Clean thành Clear
jWhiteBoard-New Requirements
Add Button Brush ---> Allow user to select Brush color
Add button Brush --> Allow user to select Brush color
Add Button Brush -> Allow user to select brush color