ITI0011:praktikum 6 T8 - Redigeerimiste ajalugu

Ago – 8. oktoober 2014, kell 19:40

2014-10-08T19:40:44Z

Ago – 7. oktoober 2014, kell 05:56

2014-10-07T05:56:37Z

Ago: /* Üldine */

2014-10-07T04:58:31Z

Üldine

Ago: /* Exercise */

2014-10-07T04:57:27Z

Exercise

Ago – 6. oktoober 2014, kell 22:44

2014-10-06T22:44:54Z

Ago – 6. oktoober 2014, kell 22:38

2014-10-06T22:38:38Z

Ago: /* Exercise */

2014-10-06T22:28:07Z

Exercise

Ago: Uus lehekülg: 'Tagasi ITI0011 lehele. == Üldine == Siin on praktikumi, mis toimub teisipäeval, 7. oktoobril kell 8, info. Praktikumis käsitletavad teemad: * veebist lugemine * Stringi...'

2014-10-06T21:45:51Z

Uus lehekülg: 'Tagasi ITI0011 lehele. == Üldine == Siin on praktikumi, mis toimub teisipäeval, 7. oktoobril kell 8, info. Praktikumis käsitletavad teemad: * veebist lugemine * Stringi...'

Uus lehekülg

Tagasi [[ITI0011]] lehele.

== Üldine ==

Siin on praktikumi, mis toimub teisipäeval, 7. oktoobril kell 8, info.

Praktikumis käsitletavad teemad:
* veebist lugemine
* Stringi parsimine
* objekti loomine
* (sortimine)

== Exercise ==

You have a database of sports activities. The database is stored in a text file. Now you want to write a program that reads the data from the file and converts it into Java objects. You will write different objects for different activities. But in order to store them in one collection, you need to have a common type (e.g. super class).

1) Create objects for different activities:
* running. has fields:
** date (when the activity took place)
** distance (in kms)
** duration (in minutes)
** steps (how many steps were done)
** maxSpeed (in km/h)
* cycling. has fields:
** date (when the activity took place)
** distance (in kms)
** duration (in minutes)
** max speed (in km/h)
* walking
** date (when the activity took place)
** distance (in kms)
** duration (in minutes)
** resting duration (how many minutes in total resting took place during the activity)

2) Read information from file.

The structure of the file:

in case of running:
date R distance duration steps maxspeed

in case of cycling:
date C distance duration maxspeed

in case of walking:
date W distance duration restduration

For example the file:
2014-10-01 R 10 50 5660 10
2014-10-03 C 12 30 33
2014-10-05 W 4 60 20

would yield in 3 objects: one running object, one cycling object and one walking object.

3) (optional) try to sort the objects by date.

An example: http://stackoverflow.com/questions/6510724/how-to-convert-java-string-to-date-object

@@ 147. rida: / 147. rida: @@
 ** resting duration (how many minutes in total resting took place during the activity)
-) Read information from file: http://courses.cs.ttu.ee/w/images/7/76/Praktikum-06-input.txt
+) Read information from file: http://dijkstra.cs.ttu.ee/~ago/iti0011/praktikum-06-input.txt
 The structure of the file (R, C, W indicates activity type: running, cycling, walking accordingly):

←Vanem redaktsioon		Redaktsioon: 7. oktoober 2014, kell 05:56
13. rida:		13. rida:

	'''Kood tuleb üles laadida git'i'''. Kausta (projekti) nimi peaks olema "prax6".		'''Kood tuleb üles laadida git'i'''. Kausta (projekti) nimi peaks olema "prax6".
		+
		+	== Koodinäide ==
		+
		+	Activities.java
		+
		+	<source lang="java">
		+	import java.io.BufferedReader;
		+	import java.io.IOException;
		+	import java.io.InputStream;
		+	import java.io.InputStreamReader;
		+	import java.io.Reader;
		+	import java.net.MalformedURLException;
		+	import java.net.URL;
		+	import java.util.StringTokenizer;
		+
		+	public class Activities {
		+
		+	public static class Data {
		+	public int a;
		+	public String b;
		+
		+	public void print() {
		+	System.out.println(b + a);
		+	}
		+
		+	@Override
		+	public String toString() {
		+	// TODO Auto-generated method stub
		+	return b + " " + a + " (" + super.toString() + ")";
		+	}
		+	}
		+
		+	public static void main(String[] args) {
		+	try {
		+	URL url = new URL("http://www.neti.ee");
		+	InputStream is = url.openStream();
		+
		+	//Reader r = new InputStreamReader(System.in);
		+	Reader r = new InputStreamReader(is);
		+	BufferedReader br = new BufferedReader(r);
		+	while (true) {
		+	String line = br.readLine();
		+	if (line == null) break;
		+	System.out.println(line);
		+	}
		+
		+	URL url2 = new URL("http://www.neti.ee");
		+	BufferedReader br2 = new BufferedReader(new InputStreamReader(url2.openStream()));
		+
		+	} catch (MalformedURLException e) {
		+	e.printStackTrace();
		+	} catch (IOException e) {
		+	e.printStackTrace();
		+	}
		+
		+	String line = "123 123 123 tere ";
		+	int start = 0;
		+	int end = -1;
		+	for (int i = 0; i < line.length(); i++) {
		+	if (line.charAt(i) == ' ') {
		+	end = i;
		+	System.out.println(line.substring(start, end));
		+	start = i + 1;
		+	}
		+	//System.out.println(line.charAt(i));
		+
		+	}
		+	System.out.println(line.substring(start, line.length()));
		+
		+	String[] ss = line.split(" ");
		+	for (String s : ss) {
		+	try {
		+	int a = Integer.parseInt(s);
		+	double d = Double.parseDouble(s);
		+	System.out.println(a + 1);
		+	} catch (NumberFormatException e) {
		+	System.out.println(s);
		+	}
		+
		+	}
		+
		+	StringTokenizer st = new StringTokenizer(line);
		+
		+	System.out.println(st.nextToken());
		+	System.out.println(st.nextToken());
		+	System.out.println(st.nextToken());
		+	System.out.println(st.nextToken());
		+	if (st.hasMoreTokens()) {
		+	System.out.println(st.nextToken());
		+	}
		+
		+
		+	Data d = new Data();
		+	d.a = 12;
		+	d.b = "tere";
		+	System.out.println(d);
		+	}
		+
		+	}
		+
		+	</source>

	== Tips ==		== Tips ==

@@ 12. rida: / 12. rida: @@
 * (sortimine)
-Kood tuleb üles laadida git'i. Kausta (projekti) nimi peaks olema "prax6".
+'''Kood tuleb üles laadida git'i'''. Kausta (projekti) nimi peaks olema "prax6".
 == Tips ==

@@ 48. rida: / 48. rida: @@
 ) Read information from file: http://courses.cs.ttu.ee/w/images/7/76/Praktikum-06-input.txt
-The structure of the file:
+The structure of the file (R, C, W indicates activity type: running, cycling, walking accordingly):
 in case of running:

@@ 55. rida: / 55. rida: @@
 ) (optional) try to sort the objects by date.
-An example: http://stackoverflow.com/questions/6510724/how-to-convert-java-string-to-date-object
+An example: http://stackoverflow.com/questions/2784514/sort-arraylist-of-custom-objects-by-property
 ) print out activities.
 Activities should be stored in a list or array (or something else similar). Print out all the information about the activity. In case of running, print out "running" + date, duration, maxspeed, steps, distance etc.

@@ 6. rida: / 6. rida: @@
 Praktikumis käsitletavad teemad:
 * veebist lugemine
 * Stringi parsimine
 * objekti loomine
 * (sortimine)
 == Exercise ==