Gregory M. Kapfhammer
Key Concept
Corresponding Diagram
In-Class Discussion
In-Class Activity
Details in the Textbook
Similarities and differences?
Can you create a list for both of these?
What does this look like in memory?
Aliases for reference variables
Refer to Section 3.1 for more details and diagrams!
Real world examples of string processing?
Purpose of and ways to index a string?
See Figure 3.1 for the methods provided by String
We can write a Java program to learn more about Strings
Input the program in Listing 3.1 on page 120
Can you explain the output of this program?
Now, change the replacement and the substring!
Work on this programming task with your partner
If you create and fix an error, post the details in Slack!
What is a class library?
Application programming interface (API)
What are some examples of packages?
Check the online documentation!
Make sure to use an import!
Let's explore a new package!
Provided by java.util.Random
Calculations based on a seed value
Input, compile, and run the program in Listing 3.2
Just one of the nextInt and nextFloat calls
What do you do if the output needs a special format?
The DecimalFormat and NumberFormat classes
You can format correct for currency and percentages!
See details in the text — may help on an assignment!
What to do if a variable only has a few possible "types"?
For instance, a letter grade has distinct values
Or, across the world, seasons have categories
You can use enumerated types to define these categories
See details in the text — may help on an assignment!