Lukasz Stafiniak pages | Java / Java

January 12, 2012, at 04:37 PM by lukstafi - lec11

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## Write a "Reminder" graphical application, managing messages to be displayed at scheduled times, perhaps periodically. Use @@ScheduledThreadPoolExecutor@@.

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# [[Attach:java-lecture11.pdf | Lecture 11]] -- Usable, secure and maintainable code: [[http://java.sun.com/docs/books/effective/ | Effective Java]] by Joshua Bloch.

January 11, 2012, at 01:51 PM by lukstafi - lec10

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# [[Attach:java-lecture10.pdf | Lecture 10]] -- Model-View-Controller pattern for Swing applications.
## [[Attach:Lec10.jar]] -- comprehensive example from [[http://books.google.com/books?id=LjJcCnNf92kC&printsec=frontcover#v=onepage&q&f=false | Head First design patterns]] By Eric Freeman, Elisabeth Freeman, Kathy Sierra, Bert Bates.

December 25, 2011, at 11:42 PM by lukstafi - concurrency assignment

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# Concurrency. Select one of the following exercises.
## Write a program that downloads several pages from the internet and computes a joint histogram of words in the pages. Compare the performance when the pages are downloaded sequentially and concurrently.
## Rewrite the "Settlers" example from cooperative concurrency to fully using Java threads.
*** I will provide an almost-ready rewrite with only some bits to finish, stand by if you choose this exercise...
## Rewrite (parallelize) a project of your choice into using Java threads.
*** You need to get the project accepted on the first lab of January if you choose this exercise.

December 21, 2011, at 12:19 PM by lukstafi - lecture 9

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# ~~More of Swing and SWT GUI libraries~~. ~~Model-View-Controller~~.
~~# Concurrency~~.

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# [[Attach:java-lecture09.pdf | Lecture 9]] -- Concurrency.
## [[Attach:Lec9.jar]] -- selected code examples from [[http://www.mindviewinc.com/Books/TIJ4/ | Thinking in Java]] by Bruce Eckel.

December 13, 2011, at 01:41 PM by lukstafi - Settlers GUI assignment

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# Due last week before the Christmas break, or if we cannot organize a class, on the first lab in 2012: either
## Write a graphical interface to display results of the Settlers simulation.
### For bonus points, extend it with a graphical interface to set-up the simulation.
### For bonus points, extend it with a stepping mechanism to display the course of the simulation as it evolves.
## Write a graphical interface to a project of your choice; you need to get the project accepted by Dec. 16.

December 12, 2011, at 05:08 PM by lukstafi - Settlers assignment comment

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I will post the solution to the Settlers series of exercises in compiled form only not to spoil the fun, but if you'd rather develop new features than redo the assignments above, contact me, and I'll share the sources.

December 09, 2011, at 01:03 PM by lukstafi - serializable comment

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## Add functions to save the state of simulation into a file and restore it from a file, in binary.

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## Add functions to save the state of simulation into a file and restore it from a file, in binary. Hint: use serialization; don't forget to make all and every class serializable (perhaps even turn the @@LookFor@@ interface into a serializable abstract class).

December 07, 2011, at 01:02 PM by lukstafi - GUIs

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# Graphical user interfaces ~~(comparison of AWT, Swing, SWT~~.~~..) Event handling~~.
~~# More of Swing GUI library~~. Model-View-Controller.

to:

# Graphical user interfaces: Swing, SWT. Event handling.
## [[Attach:Lec8.jar]] -- selected code examples from [[http://www.mindviewinc.com/Books/TIJ4/ | Thinking in Java]] by Bruce Eckel.
# More of Swing and SWT GUI libraries. Model-View-Controller.

December 02, 2011, at 03:25 PM by lukstafi - pretty-print assignment

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## Modify the program to, instead of printing on the screen, pretty-print the output into a file. ~~I'll provide details later~~.

to:

## Modify the program to, instead of printing on the screen, pretty-print the output into a file. Generate a table with rows corresponding to successive time instances and columns corresponding to buildings and settlers. Create either a formatted text table, or an HTML table.

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# Input / Output.

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# [[Attach:java-lecture07.pdf | Lecture 7]] -- Input / Output.

December 01, 2011, at 12:24 PM by lukstafi - binary exercise

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## Add functions to save the state of simulation into a file and restore it from a file, in binary.

November 30, 2011, at 01:46 PM by lukstafi - lec7.jar

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## [[Attach:Lec7.jar]] -- selected code examples from [[http://www.mindviewinc.com/Books/TIJ4/ | Thinking in Java]] by Bruce Eckel.

November 23, 2011, at 11:28 AM by lukstafi - minor

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* [[http://www.mindviewinc.com/Books/TIJ4/ | Thinking in Java]] by Bruce Eckel.

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* [[http://www.mindviewinc.com/Books/TIJ4/ | Thinking in Java]] by Bruce Eckel.

November 23, 2011, at 11:27 AM by lukstafi - upgrade TiJ

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* [[http://www.mindviewinc.com/Books/TIJ4/ | Thinking in Java]] by Bruce Eckel.

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* [[http://www.mindviewinc.com/Books/TIJ4/ | Thinking in Java]] by Bruce Eckel.

November 23, 2011, at 11:19 AM by lukstafi - IO assignment

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# Due Dec 2: Modify the simulation inspired by The Settlers game [[Attach:settlers.jar]] in one of the following ways. (Select one exercise; the first ~~five~~ exercises are simple, the first three require little work.)

to:

# Due Dec 2: Modify the simulation inspired by The Settlers game [[Attach:settlers.jar]] in one of the following ways. (Select one exercise; the first four exercises are simple, the first three require little work.)

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~~## Configure the simulation by reading a file.~~

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# Due Dec 9: Modify the simulation inspired by The Settlers game [[Attach:settlers.jar]] in one of the following ways.
## Configure the simulation by reading a file.
## Modify the program to, instead of printing on the screen, pretty-print the output into a file. I'll provide details later.

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# Input / Output.

November 14, 2011, at 04:59 AM by lukstafi - assignment 5

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# Due Dec 2: Modify the simulation inspired by The Settlers game [[Attach:settlers.jar]] in one of the following ways. (Select one exercise; the first five exercises are simple, the first three require little work.)
## Write a method to add a road segment between two existing waypoints.
## Add another kind of resources, for example @@STONE@@.
## Make the carriers return to the warehouse they came from after making a delivery, similarly to how they return when they cannot make the delivery; but in case they make the delivery to a warehouse where there is not enough carriers (e.g. less than 3), let them stay. Now, a small number of carriers should still distribute all resources needed.
## Configure the simulation by reading a file.
## Add a terrain: a two-dimensional array of @@enum@@ objects that decides which kinds of buildings can be built at which locations. (The terrain can be a field in the @@Scheduler@@ class.)
## Add another kind of settler: a constructor, add an @@underConstruction@@ boolean field to the @@Building@@ class and modify @@notFunctional ()@@ to account for it. Modify the @@Building@@ class so that the constructor settler needs to reside in a building for a time proportional to @@resourcesToBuild().sum()@@ before @@underConstruction@@ becomes false. Write a method in the @@Castle@@ class that generates and schedules a task which searches for a building that is @@underConstruction@@ but does not have a constructor, and sends a constructor there. The constructor should return back to the castle after finishing the job.
## Add another kind of building: sawmill, and another settler: woodcutter. The castle should send a woodcutter and a carrier to a sawmill after it is built. The woodcutter produces the wood and the carrier delivers it periodically to the nearest warehouse.

November 09, 2011, at 07:52 PM by lukstafi - Lec6 code samples

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## [[Attach:Lec6.jar]] -- selected code examples from [[http://www.mindviewinc.com/Books/TIJ4/ | Thinking in Java]] by Bruce Eckel.

November 04, 2011, at 07:18 PM by lukstafi - delay due date

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# Due Nov 11: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. (Some change to the class structure might be needed.) Remove the unnecessary class casts. Remember to fix all sources of so called ''unchecked'' warnings. To get the locations of warnings, compile with @@javac -Xlint:unchecked *.java@@. For bonus points, select one of the exercises:

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# Due Nov 18: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. (Some change to the class structure might be needed.) Remove the unnecessary class casts. Remember to fix all sources of so called ''unchecked'' warnings. To get the locations of warnings, compile with @@javac -Xlint:unchecked *.java@@. For bonus points, select one of the exercises:

November 02, 2011, at 01:51 PM by lukstafi - variance

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# [[Attach:java-lecture06.pdf | Lecture 6]] -- Generics. Collections.

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# [[Attach:java-lecture06.pdf | Lecture 6]] -- Covariance and Contravariance. Generics. Collections.

October 29, 2011, at 12:44 PM by lukstafi - bonus exercise

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# Due Nov 11: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. (Some change to the class structure might be needed.) Remove the unnecessary class casts. Remember to fix all sources of so called ''unchecked'' warnings.
** To get the locations of warnings, compile with @@javac -Xlint:unchecked *.java@@.
## For bonus points, ~~implement~~ the Java standard library collection interfaces @@Set<E>@@ and @@Map<K,V>@@ using ordered linked lists, subclassing appropriate abstract classes from the library.

to:

# Due Nov 11: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. (Some change to the class structure might be needed.) Remove the unnecessary class casts. Remember to fix all sources of so called ''unchecked'' warnings. To get the locations of warnings, compile with @@javac -Xlint:unchecked *.java@@. For bonus points, select one of the exercises:
## Add an iterator (or another form of browsing the elements) to the @@MySet@@ interface. In @@union@@ and @@intersect@@ methods, use the @@instanceof@@ operator to switch to a general way of performing these operations in case the argument is not of the @@MySetImpl@@ class.
## Implement the Java standard library collection interfaces @@Set<E>@@ and @@Map<K,V>@@ using ordered linked lists, subclassing appropriate abstract classes from the library.

October 29, 2011, at 12:11 PM by lukstafi -

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# Due Nov 11: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. (Some change to the class structure might be needed.) Remove the unnecessary class casts. Remember to fix all sources of _unchecked_ warnings.

to:

# Due Nov 11: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. (Some change to the class structure might be needed.) Remove the unnecessary class casts. Remember to fix all sources of so called ''unchecked'' warnings.

October 29, 2011, at 12:08 PM by lukstafi - more ex4 comments

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# Due Nov 11: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. (Some change to the class structure might be needed.) Remove the unnecessary class casts.

to:

# Due Nov 11: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. (Some change to the class structure might be needed.) Remove the unnecessary class casts. Remember to fix all sources of _unchecked_ warnings.
** To get the locations of warnings, compile with @@javac -Xlint:unchecked *.java@@.

October 29, 2011, at 11:14 AM by lukstafi - ex4 comment

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** [[Attach:ex3nested.jar]] -- ~~nicer~~ example using nested classes.

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** [[Attach:ex3nested.jar]] -- example using nested classes.

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# Due Nov 11: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. Remove the unnecessary class casts.

to:

# Due Nov 11: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. (Some change to the class structure might be needed.) Remove the unnecessary class casts.

October 28, 2011, at 11:15 PM by lukstafi - ex3 update

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** Exercise update:
### implement the @@clone()@@ method for @@MySetImpl@@ and @@MyMapImpl@@;
### don't forget to add simple demonstration tests for @@MySet.intersect@@, @@MyMap.union@@ and @@clone()@@ methods.

October 28, 2011, at 10:58 PM by lukstafi - new assignment

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** [[Attach:ex3nested.jar]] -- nicer example using nested classes.
# Due Nov 11: Modify the [[Attach:ex3nested.jar | nested]] implementation of sets and maps (including the interfaces) to use generic types. Remove the unnecessary class casts.
## For bonus points, implement the Java standard library collection interfaces @@Set<E>@@ and @@Map<K,V>@@ using ordered linked lists, subclassing appropriate abstract classes from the library.

October 27, 2011, at 02:54 AM by lukstafi - Swing

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# Graphical user interfaces (~~AWT library). Event handling~~.

to:

# Graphical user interfaces (comparison of AWT, Swing, SWT...) Event handling.
# More of Swing GUI library. Model-View-Controller.

October 27, 2011, at 02:49 AM by lukstafi - assignment source

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** [[Attach:~~Ex3~~.jar]]

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** [[Attach:ex3.jar]]

October 27, 2011, at 02:48 AM by lukstafi - assignment source

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** [[Attach:Ex3.jar]]
*** DISCLAIMER: this example does not show the right way to implement containers or good programming practice, it is just an exercise in use and limitations of inheritance and interfaces.

October 21, 2011, at 10:21 PM by lukstafi - another book

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* [[http://books.google.com/books/about/Clean_code.html?id=dwSfGQAACAAJ | Clean code: a handbook of agile software craftsmanship]] by Robert C. Martin

October 19, 2011, at 11:47 AM by lukstafi - tutorials primary

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* [[http://download.oracle.com/javase/tutorial/ | The Java Tutorials]] at Sun/Oracle.

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* [[http://download.oracle.com/javase/tutorial/ | The Java Tutorials]] at Sun/Oracle.

October 19, 2011, at 11:44 AM by lukstafi - change deadline, tentative lectures

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# Due ~~Oct 28~~: [[Attach:Ex3-SetsAndMaps.pdf | Sets and Maps]].

to:

# Due Nov 4: [[Attach:Ex3-SetsAndMaps.pdf | Sets and Maps]].

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# Graphical user interfaces (AWT library). Event handling.
# Concurrency.

October 16, 2011, at 10:23 PM by lukstafi - javadoc

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# [[Attach:java-lecture05.pdf | Lecture 5]] -- Exceptions. Packages.

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# [[Attach:java-lecture05.pdf | Lecture 5]] -- Exceptions. Packages. Generating documentation with @@javadoc@@.

October 16, 2011, at 11:30 AM by lukstafi - new lecture

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# [[Attach:java-lecture05.pdf | Lecture 5]] -- Exceptions. Packages.
# [[Attach:java-lecture06.pdf | Lecture 6]] -- Generics. Collections.

October 14, 2011, at 08:59 AM by lukstafi - new exercises

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# Due Oct 28: [[Attach:Ex3-SetsAndMaps.pdf | Sets and Maps]].

October 12, 2011, at 12:06 PM by lukstafi - new lectures

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# [[Attach:java-lecture02.pdf | Lecture 2]] -- Classes, objects, inheritance.

to:

# [[Attach:java-lecture02.pdf | Lecture 2]] -- Classes, objects, inheritance.
# [[Attach:java-lecture03.pdf | Lecture 3]] -- Inheritance and interfaces. Nested types and inner classes.
# [[Attach:java-lecture04.pdf | Lecture 4]] -- Review: the Java tutorials.

October 07, 2011, at 02:10 PM by lukstafi - dates extended

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# Due Oct 7: [[Attach:Ex1-SelfAvoidingWalk.pdf | Self-Avoiding Walk]]; [[http://introcs.cs.princeton.edu/java/home/ | Introduction to Programming in Java]]: [[http://introcs.cs.princeton.edu/java/14array/SelfAvoidingWalk.java.html | SelfAvoidingWalk.java]].
# Due Oct 14: [[Attach:Ex2-PrimeFactors.pdf | Prime Factors]].

to:

# Due Oct 14: [[Attach:Ex1-SelfAvoidingWalk.pdf | Self-Avoiding Walk]]; [[http://introcs.cs.princeton.edu/java/home/ | Introduction to Programming in Java]]: [[http://introcs.cs.princeton.edu/java/14array/SelfAvoidingWalk.java.html | SelfAvoidingWalk.java]].
# Due Oct 21: [[Attach:Ex2-PrimeFactors.pdf | Prime Factors]].

October 07, 2011, at 09:49 AM by lukstafi - typo

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# Due Oct 14: [[Attach.Ex2-PrimeFactors.pdf | Prime Factors]].

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# Due Oct 14: [[Attach:Ex2-PrimeFactors.pdf | Prime Factors]].

October 07, 2011, at 09:49 AM by lukstafi - ex 2

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# Due Oct 14: [[Attach.Ex2-PrimeFactors.pdf | Prime Factors]].

October 06, 2011, at 10:45 PM by lukstafi - run online

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Run Java code online:
* [[http://ideone.com/]] (do not make the class defining @@main@@ public)
* [[http://www.browxy.com:9001/codeRunner]] (do make it public)

October 06, 2011, at 09:53 PM by lukstafi - OOP articles

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* [[http://en.wikiversity.org/wiki/Object_Oriented_Software_Design#Introductory_Articles | The Object-Oriented Thought Process]] articles by Matt Weisfeld

October 05, 2011, at 07:07 AM by lukstafi - reorganized references

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~~References~~:

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Primary course material:
* [[http://java.sun.com/docs/books/javaprog/ | The Java Programming Language, 4th ed.]] by Ken Arnold, James Gosling, and David Holmes.
* [[http://java.sun.com/docs/books/effective/ | Effective Java]] by Joshua Bloch.
* [[http://download.oracle.com/javase/6/docs/api/ | Java SE6 API]] and [[http://download.oracle.com/javase/7/docs/api/ | Java SE7 API]].

See also:

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* [[http://download.oracle.com/javase/6/docs/api/ | Java SE6 API]] and [[http://download.oracle.com/javase/7/docs/api/ | Java SE7 API]].

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* [[http://java.sun.com/docs/books/effective/ | Effective Java]] by Joshua Bloch.

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# [[Attach:java-lecture01.pdf | Lecture 1]] -- ~~references, the~~ Java ~~story, syntax~~.
# ~~[[Attach:java-lecture02.pdf | Lecture~~ 2]]

to:

# [[Attach:java-lecture01.pdf | Lecture 1]] -- Introduction to Java.
# [[Attach:java-lecture02.pdf | Lecture 2]] -- Classes, objects, inheritance.

September 30, 2011, at 09:55 PM by lukstafi - IDEs

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* [[http://www.mindviewinc.com/Books/TIJ4/ | Thinking in Java]] by Bruce Eckel.
* [[http://java.sun.com/docs/books/effective/ | Effective Java]] by Joshua Bloch.
* [[http://books.google.com/books?id=LjJcCnNf92kC&printsec=frontcover#v=onepage&q&f=false | Head First design patterns]] By Eric Freeman, Elisabeth Freeman, Kathy Sierra, Bert Bates

Integrated Development Environments (Java and general):
* [[http://netbeans.org/kb/index.html | NetBeans]]
* [[http://www.eclipse.org/downloads/moreinfo/java.php | Eclipse]]
* Emacs [[http://cedet.sourceforge.net/ | CEDET]] with [[http://jdee.sourceforge.net/ | JDEE]]

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* Due Oct 7: [[Attach:Ex1-SelfAvoidingWalk.pdf | Self-Avoiding Walk]]; [[http://introcs.cs.princeton.edu/java/home/ | Introduction to Programming in Java]]: [[http://introcs.cs.princeton.edu/java/14array/SelfAvoidingWalk.java.html | SelfAvoidingWalk.java]].

to:

# Due Oct 7: [[Attach:Ex1-SelfAvoidingWalk.pdf | Self-Avoiding Walk]]; [[http://introcs.cs.princeton.edu/java/home/ | Introduction to Programming in Java]]: [[http://introcs.cs.princeton.edu/java/14array/SelfAvoidingWalk.java.html | SelfAvoidingWalk.java]].

Lectures:
# [[Attach:java-lecture01.pdf | Lecture 1]] -- references, the Java story, syntax.
# [[Attach:java-lecture02.pdf | Lecture 2]]

September 30, 2011, at 06:26 PM by lukstafi - references

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~~The first exercise list:~~ [[~~Attach~~:~~Ex1-SelfAvoidingWalk~~.~~pdf~~ | ~~Self-Avoiding Walk~~]]~~; [[http:~~/~~/introcs~~.~~cs.princeton.edu/java/home/ | Introduction to Programming in Java]]:~~ [[http://~~introcs~~.cs.~~princeton.edu~~/~~java~~/~~14array~~/~~SelfAvoidingWalk.java.html~~ | ~~SelfAvoidingWalk.java~~]].

to:

References:
* [[http://java.sun.com/docs/books/jls/ | The Java Language Specification]] at Sun/Oracle.
* [[http://download.oracle.com/javase/tutorial/ | The Java Tutorials]] at Sun/Oracle.
* [[http://en.wikiversity.org/wiki/Learning_Java | Learning Java]] at Wikiversity or [[http://en.wikibooks.org/wiki/Java_Programming | Java Programming]] at Wikibooks.
* [[http://download.oracle.com/javase/6/docs/api/ | Java SE6 API]] and [[http://download.oracle.com/javase/7/docs/api/ | Java SE7 API]].

Exercises:
* Due Oct 7: [[Attach:Ex1-SelfAvoidingWalk.pdf | Self-Avoiding Walk]]; [[http://introcs.cs.princeton.edu/java/home/ | Introduction to Programming in Java]]: [[http://introcs.cs.princeton.edu/java/14array/SelfAvoidingWalk.java.html | SelfAvoidingWalk.java]].

September 30, 2011, at 08:55 AM by lukstafi - book link

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The first exercise list: [[Attach:Ex1-SelfAvoidingWalk.pdf | Self-Avoiding Walk]] ~~(and~~ [[~~Attach~~:~~SelfAvoidingWalk~~.java]]).

to:

The first exercise list: [[Attach:Ex1-SelfAvoidingWalk.pdf | Self-Avoiding Walk]]; [[http://introcs.cs.princeton.edu/java/home/ | Introduction to Programming in Java]]: [[http://introcs.cs.princeton.edu/java/14array/SelfAvoidingWalk.java.html | SelfAvoidingWalk.java]].

September 30, 2011, at 08:40 AM by lukstafi - source

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The first exercise list: [[Attach:Ex1-SelfAvoidingWalk.pdf | Self-Avoiding Walk]].

to:

The first exercise list: [[Attach:Ex1-SelfAvoidingWalk.pdf | Self-Avoiding Walk]] (and [[Attach:SelfAvoidingWalk.java]]).

September 30, 2011, at 08:27 AM by lukstafi - exercise 1

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The first exercise list: [[Attach:Ex1-SelfAvoidingWalk.pdf | Self-Avoiding Walk]].

Java

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