CSE110 Lecture 15

Principles of Programming with Java
Object-Oriented Programming
(202005)

Transcript

1. CSE110
   Principles of Programming
   with Java
   Lecture 15:
   Object-Oriented Programming
   Javier Gonzalez-Sanchez
   javiergs@asu.edu
   javiergs.engineering.asu.edu | javiergs.com
   Office Hours: By appointment
   

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2. Previously
   

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3. Javier Gonzalez-Sanchez | CSE110 | Summer 2020 | 4
   Problem
   • Create a program for Quizzes
   • Specifically to test your Arithmetic skills
   • For instance 75 + 31 =
   • Let us start with only additions and 2 digits numbers
   • Could the computer grade the Quiz?
   • Show the students her/his grade
   

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4. Javier Gonzalez-Sanchez | CSE110 | Summer 2020 | 5
   

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5. Javier Gonzalez-Sanchez | CSE110 | Summer 2020 | 6
   class
   main()
   

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6. Level Up
   

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7. Javier Gonzalez-Sanchez | CSE110 | Summer 2020 | 8
   class
   Where we are?
   main()
   

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8. Javier Gonzalez-Sanchez | CSE110 | Summer 2020 | 9
   class
   What is next?
   main()
   class
   class
   class
   

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9. Javier Gonzalez-Sanchez | CSE110 | Summer 2020 | 10
   Everything is an object
   CSE470
   Computer
   Graphics
   CSE412
   Databases
   objects
   objects
   

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10. Javier Gonzalez-Sanchez | CSE110 | Summer 2020 | 11
    Object-Oriented Paradigm
    everything is an entity (object)
    A program is a collection of objects working together
    main()
    

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11. Javier Gonzalez-Sanchez | CSE110 | Summer 2020 | 12
    class
    Where we are?
    main()
    class
    create a new entity/object
    use the entity/object
    

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12. Javier Gonzalez-Sanchez | CSE110 | Summer 2020 | 13
    Object-Oriented Paradigm
    public class MyProgram {
    public static void main(String [] arg)
    {
    Student john = new Student();
    john.name = "John Doe";
    john.sayHello();
    john.drawSomething();
    }
    }
    public class Student {
    String name;
    int finalGrade;
    public void sayHello(){
    // print name
    }
    public void drawSomething(){
    // draw
    }
    }
    

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15. Javier Gonzalez-Sanchez | CSE110 | Summer 2020 | 16
    Reference
    Pages 362 - 367
    

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16. CSE110 - Principles of Programming
    Javier Gonzalez-Sanchez
    javiergs@asu.edu
    Summer 2020
    Disclaimer. These slides can only be used as study material for the class CSE110 at ASU. They cannot be distributed or used for another purpose.
    

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