1. SE-1021 Software Engineering II
6/2/2019
SE-1021 Software Engineering II
Week 9, Class 1
ByteBuffer
Tomorrow
Get quizzes back from last week…
Wednesday
Quiz at start of lab
Dr. Yoder

2. Quiz 8, Question 5
“Because one uses the other and neither extends the other, nor does either implement the other”
“JLabel is using ImageIcon, though they are both separate classes in and of themselves”
“JLabel is gaining more of ImageIcon’s functionality but is using it as a component”
SE-2811
Dr. Mark L. Hornick

3. Aggregation vs Composition
Uncolored on UML
Does not need aggregates to exist
May not be composition
Colored on UML
Created from its components
Certainly is aggregation
(Contained in the diagram here)
Aggregation
Composition
SE-1021
Dr. Josiah Yoder
Slide style: Dr. Hornick

4. Slide style: Dr. Hornick
Syntax for try-catch
try { } catch (/*…*/) { } --- OR --- } finally {
SE-1021
Dr. Josiah Yoder
Slide style: Dr. Hornick

5. Slide style: Dr. Hornick
Syntax for try-catch
try (TYPE NAME = new SOMETHING) { } catch (/*…*/) { /*…*/ } finally { }
SE-1021
Dr. Josiah Yoder
Slide style: Dr. Hornick

6. Slide style: Dr. Hornick
Possible Programs
SE-1021
Dr. Josiah Yoder
Slide style: Dr. Hornick

7. Slide style: Dr. Hornick
Treasure Hunt
Image shows on screen
Click various places
When you click, the thing you clicked “does something”
Scurry off
Play an animated movie
Move to another position on the screen
SE-2811
Dr. Josiah Yoder
Slide style: Dr. Hornick

8. Slide style: Dr. Hornick
From Last Time
SE-1021
Dr. Josiah Yoder
Slide style: Dr. Hornick

9. Slide style: Dr. Hornick
Useful Point
Scanners can separate on more than just whitespace: A method of scanner: Scanner useDelimiter(String pattern) Now, whatever is being scanned will be split along “pattern”
SE-1021
Dr. Josiah Yoder
Slide style: Dr. Hornick

10. Slide style: Dr. Hornick
Exercise:
We would like to store treasures as treasure.png,100,340, treasure.png,234,678, treasure.png,100,340, Write code to create new treasures from this file.
SE-1021
Dr. Josiah Yoder
Slide style: Dr. Hornick