Welcome to our Zoo!

• Snyk monitors our code for vulnerabilities in the packages we include.
• Codacy checks our code for common 'code smells' and recommends improvements.
• Click the badges to learn more.

• Explore API at https://denisecase.github.io/Zoo04Lab/edu/nwmissouri/zoo04lab/package-summary.html

5 steps to update (details below):

1. Netbeans -> 12.5
2. Java -> 17
3. Windows Edit System Environment Variables (JAVA_HOME, path)
4. pom.xml (already complete - verify our current versions)
5. IDE project settings -> set compile to JDK 17

• Uninstall 12.4 (program available in C:\Program Files\NetBeans-12.4)
• Download and install 12.5

Open Powershell as Admin and run this command to install Java 17. Must use --exact or -e. (winget works with install / upgrade / uninstall).

winget install Microsoft.OpenJDK.17 -e

Verify location on your machine, e.g., C:\Program Files\Microsoft\jdk-17.0.0.35-hotspot

Windows path must have exactly one JDK entry.

• Hit Win key, Edit System Environment Variables.
• Verify/add JAVA_HOME (mine is C:\Program Files\Microsoft\jdk-17.0.0.35-hotspot)
• Verify path includes exactly one Java entry - either %JAVA_HOME%\bin OR C:\Program Files\Microsoft\jdk-17.0.0.35-hotspot\bin and no other JDK or Java entries.

These have been updated. Find these in pom.xml:

• java.version = 17
• junit = 5.8.1
• maven - see different versions by plugin

Open NetBeans. Right-click our Project / Properties / Build / Compile / Java Platform

• click "Manage Java Platforms", click "Add Platform", Type = Java Std Edition / Next
• Locate your new JDK 17 (mine is in C:\Program Files\Microsoft\jdk-17.0.0.35-hotspot), click Next. It will fill in the information. Click Finish, Close.
• Back in the Java Platform dropdown, Select JDK 17.
• Clean and build project to verify everything compiles. Try running ZooApp to verify.

• Encapsulation. Wrap code in good interfaces. Hide private data, expose publicly accessible methods.
• Abstraction. Abstract general ideas that work for many, e.g. move is an abstraction of crawl, slither, fly.
• Inheritance. Write once in a parent class and all the derived child classes get it for free.
• Polymorphism. "Many shapes". One thing (e.g. move) can take many forms, e.g. a snake might move by slithering, while a bird might move by flying.

• Single Responsibility Principle. Only one reason to change.
• Open-Closed Principle. Open for extesion; closed for modification.
• Liskov Substitution Principle. Use derived class just like base.
• Interface Segregation Principle. Many client-specific interfaces.
• Dependency Inversion Principle. Depend on abstract rather than concrete.