The libraries of my project are not importing the classes of *util and several others also, I do not know what is happening, because when I create a new project these classes and libraries work. Below a print of the error.
I tried to give Clean in the whole project.
Go to properties-> java-> jre---> and add to JDK that the problem will be solved.
Go to properties-> java-> jre---> and add to JDK that the problem will be solved.
– Dilnei Cunha
thanks friend I managed to solve
– Matheus Cardozo
Kindly post your reply as a response, rather than a comment
– Genos