Week 10 Tuesday. CS 400 Programming III. X-Team Exercise #4: due before 10pm on April 16th

Transcription

1 Week 10 Tuesday X-Team Exercise #4: due before 10pm on April 16th Team Project: Tournament-Bracket (D-Team 30pts) Milestone #1: due before 10pm April 20 th (A-Team 20pts) Milestone #2: due before 10pm April 23 rd (A-Team 100pts) Milestone #3: due before 10pm May 3rd Read: Module 10 (links to Java 8 feature documentation) TODAY in Lecture: Intro to X-Team Exercise #4: Dictionary Graph Intro to Final Team Project Milestones Java Enumerations Java Interfaces OO Design o UML Diagrams Shell scripts and vim Unix/Linux Utilities o diff o grep o make and Makefile Thursday: continue where we leave off on Tuesday Functional Interfaces Lambda Expressions In-Class X-Team Time (attend you lecture with your X-team and complete some part of the final x-team project in class Next Week Java 8 Features (that we didn't get to yet) o Functional Interfaces (java.util.function.function) o Lambda expressions o java.nio.file.files o java.nio.file.paths o java.nio.streams Copyright 2018 Deb Jim Skrentny CS 400 (S18): W10T - 1

2 X-Team, Exercise #4 Last X-Team exercise Dictionary Graph o GraphTest o Graph o WordProcessor o GraphProcessorTest o GraphProcessor Copyright 2018 Deb Jim Skrentny CS 400 (S18): W10T - 2

3 Final Project: Tournament Bracket GUI Tournament-Bracket GUI Given: a list of teams (challengers) in seeded order Create: an interactive tournament bracket o where last challenges 1 st, 2 nd to last challenges 2 nd, and so on... N: is the number of teams, where,,,,, UI allows scores and winners of games to be entered, creating the next round of challenges Team Project Must be completed in a team or 3-5 students Student may be in either lecture Teams may be same as X-Team or you may choose your 3-5 team members. Students who do not pick their own team members will be assigned to a team. Milestone #1: Design Documents with D-Team (3-5 students) D-Team: 3-5 students (may be your X-Team members) Class Summary Object Diagram Milestone #2: GUI example with A-Team (3-5 students) A-Team: 3-5 students (may be same members as D-team) Program must produce a GUI with UI controls and challengers showing Milestone #3: Working GUI Tournament Bracket with A-Team A-Team: must be same team as Milestone #2 Program produces working Tournament GUI Copyright 2018 Deb Jim Skrentny CS 400 (S18): W10T - 3

4 Enumerations class Fish implements Moveable { static final int UP = 0; static final int RIGHT = 1; static final int DOWN = 2; static final int LEFT = 3; static final int CLOSER = 4; static final int FARTHER = 5; int x = 0, y = 0, z = 0; void move() { direction = (int)(math.random()*6); switch(direction) { case UP: y--; break; case RIGHT: x++; break; case DOWN: y++; break; case LEFT: x--; break; case CLOSER: z--; break; case FARTHER: z++; break; } } Rewrite using an enumeration for the direction Enumerations defines new type with only CONSTANTS set of predefined values (values are Objects references) names must be valid Java identifiers implicitly extend java.lang.enum [safer] data type can only contain enumerated values each value has an ordinal() int value they have equals() and hashcode() they are Comparable by their ordinal value can be inside a class but not inside a method may be in its own class must be in a file with same name ennum type has.value() returns all enum Day { N,M,T,W,R,F,S } enum Planet { MERCURY, VENUS, EARTH, MARS, JUPITER, SATURN, NEPTUNE, URANUS } enum Checker { RED, BLACK } enum Direction { UP, DOWN, LEFT, RIGHT, CLOSER, FARTHER} enum Level { HS, UGRAD, GRAD, SPECIAL, VS } enum Direction { UP, RIGHT, DOWN, LEFT, CLOSER, FARTHER } Use: Level.HS, Level.UGRD Copyright 2018 Deb Jim Skrentny CS 400 (S18): W10T - 4

5 Java Interfaces a contract can have: o FIELDS (constants, enums) o default methods Examples: Comparable,Throwable,Runnable,Comparator, Listener, defined constants static final int UP = 0; // all are static final int RIGHT = 1; // still static and final enum Direction { UP, RIGHT, DOWN, LEFT, CLOSER, FARTHER } default methods can provide a default implementation for any method may not do anything but it will compile without existing implementing types having to be edited Example: Moveable2.java public interface Moveable2 { enum Direction { UP, RIGHT, DOWN, LEFT, CLOSER, FARTHER } void move(); default Direction getrandommove() { int n = (int)(math.random()*direction.values().length); return Direction.values()[n]; } } Copyright 2018 Deb Jim Skrentny CS 400 (S18): W10T - 5

6 OO Design: Classes and Objects Finding the Classes (and Objects) for a Fish Tank Simulation 1. read the problem description (get the problem domain) 2. identify (name and label) different types of real-world objects (the nouns) a. people, places, things b. roles c. results 3. Refine the list a. remove duplicates b. determine if the nouns are objects or classes (types) c. can they be stored as primitives (or enums) Class Summary ClassName - Description or Purpose or Responsibility of the Class Copyright 2018 Deb Jim Skrentny CS 400 (S18): W10T - 6

7 Diagrams Diagrams can be anything that your team understands and agrees to use Unified Modeling Language: is a great place to start Class Diagram shows Fields, Constructors, Methods Object Diagram shows state of a specific instance Use Case Diagram shows sequence of interactions Inheritance "is-a" Fish is-a Moveable type Composition "has-a" Fish has-a Location Association "interacts-with" Fish interacts-with Food Draw UML-style Class diagrams for: a Fish Tank simulation: Tank, Fish, Food, Shark, EnergyLevel Show these Symbols: * 1 n Copyright 2018 Deb Jim Skrentny CS 400 (S18): W10T - 7

8 vim demo What I do: remote connect to Linux, edit with vi, use make, and shell scripts. Just enough VIM to get started and stuck! command mode insert mode escape goto line N change word yank line put line replace character replace all ^M in a text file :1,$s/Ctrl-V-M//g save quit save and quit Copyright 2018 Deb Jim Skrentny CS 400 (S18): W10T - 8

9 sh csh bash Shell Scripts what is a makefile? a build utility Makefiles what a build utility? a program that is used to create executable (programs) from source code are there other build utilities? yes, shell scripts, ant, maven, gradle How does make work? 1. create a makefile with targets and rules 2. Run make <target name> Show simple makefile for compiling and running java application compiling and running JUnit test classes (-cp switch) generating html and pdf from markdown files compiling, linking, building C++ with gcc on Linux MinGW minimalist GNU for Windows - make diff grep csh scripting languages: sh, csh, bash, perl, python, javascript (web browsers) editors: just learn vim Copyright 2018 Deb Jim Skrentny CS 400 (S18): W10T - 9