Wk02: Learning Journal HW 01

 Flavio Cervantes

CST338-40_2252

March 18, 2025

                                 

 

The unit test that was a challenge to pass was addLine(string), this is because at first I didn't fully understand what it mean stating " String is split into individual words", once I figured it out I felt that this one made me  the most proud of figuring it out.  I thought that toString() of the HashMap words was the easiest since it simply returns the toString of the HashMap words. 

This week entailed of a further understanding of HashMaps<String, Int>, these are used to store pairs of data that can be accessed by using .get(String) and to finally iterate through the hashMap, one can use a for loop. I also learned about inheritance using interfaces, these are helpful because one can build a class and build "sub" classes from the main. This is helpful because one can structure their code in a methodical manner that is hierarchy focused. Which is commonly known as a "is-a" type of relationship. I also learned that interfaces are for classes that are not related closely, quite the opposite; abstract classes are recommended being used for related classes. Learning about deep copy vs. shallow copy was also interesting, now I understand when to use one and the difference between them both.  These topics were a bit challenging, but they are getting easier to understand as I am utilizing it. 

What went well was getting a better understanding of static. I learned that static members cannot be utilized in this or super inside static blocks. They [static methods] cannot access non-static members. Static blocks are best used for initializing static variables, executed once the class is called. In a nutshell, these statics can be used in scenarios when one is working on Math/Collection related classes, constants such as PI, or global variables that are shared throughout the rest of the instances. These lessons will influence my work in the future by giving me a better understanding of these certain functions and knowing when to apply them. 

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