Lessons

Lena is a practicing physician who for a long time was certain that software development would definitely not be her story. But today her story would surely surprise her former self. In high school, she had a testy relationship with computers, but years later she created an application for diagnosing diseases. Lena writes: "When...

If you don't save references to objects, the garbage collector will come for them at night to terminate them. As scary as this may sound, programmers are ready to pray to the Java garbage collector. Especially people who started their programming careers using other languages, such as C++.

It's time to philosophize about the life and death of objects! Programmers often create dozens and dozens of objects and store them in various lists, but they never clean up these lists. This causes bloating. To avoid this, you have to use objects correctly. You'll get your first introduction in lesson.

"Amigo, ten-hut!" "I'm happy to learn Java, Captain!" "At ease, Amigo. Today we have a super interesting topic. We will talk about how a Java program interacts with external resources and we'll study one very interesting Java statement. Better not cover your ears." "I'm all ears...

Several tasks must be completed at the end of the level. Some of them are more advanced and require student's to be able to google. Or think. Or think and google. Practice completing them day in and day out, and your skills will grow at an incredible speed. They were created especially for IDEA.