Loose coupling OC principle default in interface 🛠️ When to use factory When you want to create several types of smth with different values give the creation role to a factory 👀 Yo...

✅ Layered Architecutre in Spring ❓ why use layered architecture? separation of concerns to organize code by responsitbility Presentation Layer Controller: handles HTTP request &am...

✅ TDD red blue green 🔴 first create the test code //test code @DisplayName("Calculate the total price of beverages in order") @Test void getTotalPrice() { //give...

✅ / root directory: origin of the tree root user are not the same! ✅ Level 0 / means root, origin of the tree kernel root directory all mean the same ✅ Level 1 all have ...

✅ Installation on RM ✅ Installation on VM ☑️ Suggestion 1 Internal harddisk in order to avoid slow reading/writing access to USB ☑️ Suggestion 2 The iso for the Ubuntu in the V...

✅ Installation every release have same hardware requirements 🆚 flavors require different hardware requirements If you do not have the hardware requirements, change the flavor⭕️, not the rel...

— 5.5 Installation categories: [DAW bilingual, Computer System] tags: [] # TAG names should always be lowercase — ✅ Where to download should be done from canonical > ubuntu canonical: com...

👍🏻 Ubuntu good performance flexible ✅ Releases lanzamiento numbers that follow the Ubuntu... ✔️ Version: Lubuntu 18.04 4 LTS distro: ubuntu flavor: LXQE or LXQT light for RA...

Distro 🆚 Flavor ✔️ Distro: Type of linux(👀 Debian, Ubuntu, Redhat…) ✔️ Flavor: Graphical aspect of the distro desktop Environment of the Distro also called DE 👀 There can be sev...

✅ Junit framework to help testing assertEquals ✅ AssertJ library with APIs to help testing assertThat().isEqualTo() assertThat().hasSize() assertThat().isEmpty() Manual Testing ...