CODEWITHSUNDEEP
javatextinputoutput
user1943713
user1943713

Reputation:

How do I assign values read in from a .txt file?

I'm working on a program to read in a Wikipedia page view statistics file from a .txt file, so far I have a load method that reads in this file as follows:

public void loadPVSF(String x) throws FileNotFoundException, IOException {

        FileInputStream f = new FileInputStream(x);   //obtains bytes from an input file
        DataInputStream in = new DataInputStream(f);  //reads primitive java types
        BufferedReader br = new BufferedReader(new InputStreamReader(in));

        while ((temp = br.readLine()) != null) {

            tempArray = temp.split("\n");   //adds each line to an array tempArray

            for (String st : tempArray) //puts each element of tempArray through String st
            {    
                MainArray = st.split(" ");   //adds each string after a " " to MainArray

                for (String str : MainArray) {

                    if(linecounter<5){
                        linecounter++;

                        System.out.println(linecounter + ": " + str);

Running this, this is a sample of the following command line output:

1: commons.m 
2: Category:Gracie_Gold 
3: 1 
4: 7406
1: commons.m
2: Category:Grad_Maribor
3: 1
4: 7324
1: commons.m
2: Category:Grade_II*_listed_houses_in_Cheshire
3: 1
4: 7781

Basically each set of four lines is:

1 - Language/Project
2 - Article Title
3 - Number of Page views
4 - Size of the Page (bytes)

I need to know how I will go about assigning each one of these read-in lines correctly. Essentially what I need in the end is a hash table that will store a list of the article titles and their corresponding number of views so that I can determine which one has the largest number of views.

Any tips or advice would be greatly appreciated.

Sample of the input .txt file:

nl Andreas_(apostel) 7 103145 nl Andreas_Baader 4 46158 nl Andreas_Bjelland 2 28288 nl Andreas_Burnier 2 11545 nl Andreas_Charles_van_Braam_Houckgeest 1 10373 nl Andreas_Eschbach 1 365 nl Andreas_Grassl 1 365

Upvotes: 2

Views: 306

Answers (1)

vels4j
vels4j

Reputation: 11298

You can have a simple class like

class Page {

String languageOrProject ;
String articleTitle;
int views;
int size ; 

}

then you can sort with a Comparator. Or if you need only maximum page views, add it in a TreeMap with key as Views and value as pageTitle. At the end you will be able to get least reading page by map.firstKey() and max reading page by map.lastKey()

Upvotes: 1

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