SE1011 Week 5, Class 1 Today More Java API tools Packages Object Oriented Programming Muddiest Point Tomorrow: Lab 5 – In-lab demo requirements now up.

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Presentation transcript:

SE1011 Week 5, Class 1 Today More Java API tools Packages Object Oriented Programming Muddiest Point Tomorrow: Lab 5 – In-lab demo requirements now up on my site I plan to return exam tomorrow – please ask if I don't… SE-1011 Slide design: Dr. Mark L. Hornick Instructor: Dr. Yoder 1

Generating random numbers java.util.Random generator = new java.util.Random(); int randomValue = generator.nextInt(3); Random generator = new Random(); int randomValue = generator.nextInt(3); SE-1011 Slide design: Dr. Mark L. Hornick Instructor: Dr. Yoder 2

Packages import java.util.Random; public class Example { public static void main(String[ ] ignored) { java.util.Random generator; } SE-1011 Slide design: Dr. Mark L. Hornick Instructor: Dr. Yoder 3 PackageClass name Fully-qualified name

DecimalFormat DecimalFormat moneyFormatter; moneyFormatter = new DecimalFormat("$#.00"); moneyFormatter.format(number) Also worth knowing: Formatter or (for single use) String.format(…). May want to google examples. SE-1011 Slide design: Dr. Mark L. Hornick Instructor: Dr. Yoder 4

5

Acknowledgement This course is based on the text Introduction to Programming with Java by Dean & Dean, 2 nd Edition SE-1011 Slide design: Dr. Mark L. Hornick Instructor: Dr. Yoder 6