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Week 13 [Fri, Nov 6th] - Lecture

Exercise: draw a sequence diagram

[before the lecture] Do the following exercise (you may hand-draw or use a drawing software e.g. PowerPoint, draw.io.

Consider the code below:

class Person {
    Tag tag;
    String name;

    Person(String personName, String tagName) {
        name = personName;
        tag = new Tag(tagName);
    }
}

class Tag {
    Tag(String value) {
        // ...
    }
}

class PersonList {
    void addPerson(Person p) {
        // ...
    }
}

Draw a sequence diagram to illustrate the object interactions that happen in the code snippet below:

PersonList personList = new PersonList();
while (hasRoom) {
    Person p = new Person("Adam", "friend");
    personList.addPerson(p);
}

How would you update the diagram if the PersonList class was updated as follows?

class PersonList{
    void addPerson(Person p){
        add(p);
    }

    void add(Person p){
        //...
    }
}

Lecture 2 [Fri, Nov 13th ]

No formal lecture but instructors are available for consultation. Use this slot to work on the project.