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Calcedo is making attempt 5 to complete the "Año actual 📅" task

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Anastasiia Kurulenko completed the "Two lists to compare" task on attempt 1

Anastasiia Kurulenko is making attempt 1 to complete the "Two lists to compare" task

ncksllpo started the lesson entitled "序列化中的兼容性与向后兼容性（backward compatibility）"

Calcedo is making attempt 4 to complete the "Año actual 📅" task

Anis SEBIANE started the lesson entitled "Introduction aux variables"

Calcedo is making attempt 3 to complete the "Año actual 📅" task

Anastasiia Kurulenko completed the "Email validation" task on attempt 1

Anastasiia Kurulenko is making attempt 1 to complete the "Email validation" task

Anonymous #11830399 started the lesson entitled "Commands and your first program in Java"

Calcedo is making attempt 2 to complete the "Año actual 📅" task