This repository is part of a series of Java tutorials for a Rational class written by Phill Conrad for CMPSC 56, a Java course taught in the Dept. of Computer Science at UC Santa Barbara.

For detailed instructions, see:

• https://ucsb-cs56-pconrad.github.io/tutorials/rational/
• https://ucsb-cs56-pconrad.github.io/tutorials/rational_ex02/

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Quick start

Once you clone this repo, these commands show how to compile and run the code inside.

In the previous lessson, ex01, we used simple Java javac and java commands to compile and run. In this lesson, we use a tool called ant.

• If you are using CSIL, then ant should already be installed.
• If you are using your own computer system, you may need to install ant. Refer to the article on ant for more information.

Here are example commands to compile and run the code in this repo:

Run ant compile to compile the code:

-bash-4.3$ ls
build.xml  Main.java  Rational.java  README.md
-bash-4.3$ ant compile
Buildfile: /cs/faculty/pconrad/github/cs56-rational-example/ex02/build.xml

compile:
    [javac] Compiling 2 source files to /cs/faculty/pconrad/github/cs56-rational-example/ex02

BUILD SUCCESSFUL
Total time: 0 seconds
-bash-4.3$ ls
build.xml  Main.class  Main.java  Rational.class  Rational.java  README.md
-bash-4.3$

Run ant run to run the main from the Rational class (that's what we specified in the target):

-bash-4.3$ ant run
Buildfile: /cs/faculty/pconrad/github/cs56-rational-example/ex02/build.xml

run:
     [java] r.getNumerator()=5
     [java] r.getDenominator()=7

BUILD SUCCESSFUL
Total time: 0 seconds
-bash-4.3$

To run the other main, since it takes command line parameters, it is better to run it interactively the "old fashioned way".

-bash-4.3$ java Main
Usage: java Main int denom
  int and denom should be integers; denom may not be zero.
  -bash-4.3$ java Main 2 7
  r1 = 1/1
  r2 = 2/7
  -bash-4.3$

To clean up, we type ant clean

-bash-4.3$ ls
build.xml  Main.class  Main.java  Rational.class  Rational.java  README.md
-bash-4.3$ ant clean
Buildfile: /cs/faculty/pconrad/github/cs56-rational-example/ex02/build.xml

clean:

BUILD SUCCESSFUL
Total time: 0 seconds
-bash-4.3$ ls
build.xml  Main.java  Rational.java  README.md
-bash-4.3$