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Rational
A class for rational numbers, and starting point for learning Java, and the Java toolchain
Based on https://github.com/UCSB-CS56-M16/cs56-rational-example
This is a set of tutorial examples of a class for Rational Numbers.
It illustrates various concepts/techinques of Java Coding (a list of these appears below.)
These examples are intended as support for a course in which there are also reading assignments and lectures; this tutorial is not intended to be a stand-alone curriculum for learning Java.
Having said that, if you follow the code examples in order, and look up the concepts that are new to you at each step, that will probably go a long way towards learning some important basic concepts of Java programming.
Link to javadocs: http://ucsb-cs56-m16.github.io/cs56-rational-example
Rational tutorials: table of contents
| Section | Code (github repo) |
Topics Covered |
|---|---|---|
| Rational: ex01 | code | private data members, public constructors, integers from command line arguments, main methods, built in toString method, simple compilation/execution with javac/java |
| Rational: ex02 | code | toString method, public getters, simple build.xml file for Ant, mutiple classes with main() in a single project |
| Rational: ex03 | code | creating a jar file, automatic testing with junit, creating and publishing javadoc |
| Rational: ex04 | code | move source to /src and .class files to /build, adjustments to Ant build.xml, discuss immutable objects |
| Rational: ex05 | code | Addressing bugs with test-driven development (expose bug with test first, then make test pass to squash bug) |
| Rational: ex06 | code | understanding inheritance (from java.lang.Object), linking from our javadoc to Java standard libraries, negative rational numbers, multiplying rational numbers |
| Rational: ex07 | code | Exceptions, testing for Exceptions with JUnit |
| Rational: ex08 | code | functions (methods) to multiply two rational numbers |
| Rational: ex09 | code | == vs. .equals, hashCode() |
| Rational: ex10 | code | packages: edu.ucsb.cs56.pconrad.rational |
| Rational: ex11 | code | Using java arrays and java.util.ArrayList with Rational; running main() programs from a jar file; reading from file, constructing from string |
| Rational: ex12 | code | Converting from Ant to Maven, adding jacoco test case coverage |
| Rational: ex13 | code | Improved test case coverage |
| Rational: ex14 | code | Java Lambdas |
| Rational: ex15 | code | Sorting: Comparable, Comparators |
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