I`m Student
I am using current last.fm Developer api at java eclipse.
But the problem occurred during use.
I wanted metadata values of a large amount.
But result is only 50 pieces.
I know that the default value is 50.
So, I have adjusted Page or limit but the result still shows 50 pieces.
What is reason?
public static void main(String[] args) {
String key="#########";
String tag = "ballad";
int limit = 100;
int page = 2;
int i = 1;
Chart<Artist> I3 = Tag.getWeeklyArtistChart(tag, page, key);
Iterable<Artist> tag3 = I3.getTopArtists(page, key);
for (Artist artist : tag3) {
System.out.println("["+i+"]"+""+artist.getName());
i++;
}
}
result
[1]Drake
[2]Ellie Goulding
.
.
.
.
[50]One Direction
Yes, the default is "50" and always "50", because you don't even set or use the items per page limit. see chart.getTopArtist(page, limit, api_key)
You need to add item per pages limit in:
Iterable<Artist> tag3 = I3.getTopArtists(page, limit, key)
Full Code:
public static void main(String[] args) {
String key="#########";
String tag = "ballad";
int limit = 100;
int page = 2;
int i = 1;
Chart<Artist> I3 = Tag.getWeeklyArtistChart(tag, page, key); // You can also set the limit here. (optional)
Iterable<Artist> tag3 = I3.getTopArtists(page, limit, key); // Try to add the limit here. (optional)(Default 50)
for (Artist artist : tag3) {
System.out.println("["+i+"]"+""+artist.getName());
i++;
}
}
Related
Hi.
I'm making an app that receives data from bluetooth by using stringbuilder
And makes it slice for using another activity.
The image shows what i want to make.
Q1. What should i use c->d, d->e ?
Q2. There will be a lot of data, I want to know the way to simplify this sequence
******************** edited ********************
I have practiced by adding value to Arraylist.
But in String Array, there is no .get(), so i couldn't access to element's length.
public static ArrayList<String> randomValue = new ArrayList<>();
public static int iDistance=0, xIAngle=0, yIAngle=0, zIAngle=0;
public static String distance, xAngle, yAngle, zAngle;
randomValue.add("12345090080070");
randomValue.add("15640080085071");
randomValue.add("16542070084074");
randomValue.add("12645080087078");
randomValue.add("21345084081060");
randomValue.add("14785078075065");
randomValue.add("13155079077077");
randomValue.add("14623080078078");
randomValue.add("14918086080078");
randomValue.add("15684085082080");
for (int i=0; i<randomValue.size(); i++){
String a = randomValue.get(i);
String distance = a.substring(0,5);
String xAngle = a.substring(5,8);
String yAngle = a.substring(8,11);
String zAngle = a.substring(11,14);
//String to int
iDistance = Integer.parseInt(distance);
xIAngle = Integer.parseInt(xAngle);
yIAngle = Integer.parseInt(yAngle);
zIAngle = Integer.parseInt(zAngle);
}
It seems like you are just stuck on finding the equivalent of get for a string array. To access an element in an array, the syntax is array[I], so if you were using a string array, this line:
String a = randomValue.get(i);
would have been:
String a = randomValue[i];
The code for your sequence of transformations can be shortened with Streams:
// this is the sequence of transformation starting with the sting builder "a"
List<String> randomValueWithLength14 =
Arrays.stream(a.toString().split(";")).filter(x -> x.length() == 14)
.collect(Collectors.toList());
// this is the for loop shown in your code
for (int i=0; i<randomValueWithLength14.size(); i++){
String s = randomValueWithLength14.get(i);
String distance = a.substring(0,5);
String xAngle = s.substring(5,8);
String yAngle = s.substring(8,11);
String zAngle = s.substring(11,14);
//String to int
iDistance = Integer.parseInt(distance);
xIAngle = Integer.parseInt(xAngle);
yIAngle = Integer.parseInt(yAngle);
zIAngle = Integer.parseInt(zAngle);
}
I am working on a project where I have been given a text file and I have to add up the points for each team and printout the top 5 teams.
The text file looks like this:
FRAMae Berenice MEITE 455.455<br>
CHNKexin ZHANG 454.584<br>
UKRNatalia POPOVA 453.443<br>
GERNathalie WEINZIERL 452.162<br>
RUSEvgeny PLYUSHCHENKO 191.399<br>
CANPatrick CHAN 189.718<br>
CHNHan YAN 185.527<br>
CHNCheng & Hao 271.018<br>
ITAStefania & Ondrej 270.317<br>
USAMarissa & Simon 264.256<br>
GERMaylin & Daniel 260.825<br>
FRAFlorent AMODIO 179.936<br>
GERPeter LIEBERS 179.615<br>
JPNYuzuru HANYU 197.9810<br>
USAJeremy ABBOTT 165.654<br>
UKRYakov GODOROZHA 160.513<br>
GBRMatthew PARR 157.402<br>
ITAPaul Bonifacio PARKINSON 153.941<br>
RUSTatiana & Maxim 283.7910<br>
CANMeagan & Eric 273.109<br>
FRAVanessa & Morgan 257.454<br>
JPNNarumi & Ryuichi 246.563<br>
JPNCathy & Chris 352.003<br>
UKRSiobhan & Dmitri 349.192<br>
CHNXintong &Xun 347.881<br>
RUSYulia LIPNITSKAYA 472.9010<br>
ITACarolina KOSTNER 470.849<br>
JPNMao ASADA 464.078<br>
UKRJulia & Yuri 246.342<br>
GBRStacey & David 244.701<br>
USAMeryl &Charlie 375.9810<br>
CANTessa & Scott 372.989<br>
RUSEkaterina & Dmitri 370.278<br>
FRANathalie & Fabian 369.157<br>
ITAAnna & Luca 364.926<br>
GERNelli & Alexander 358.045<br>
GBRPenny & Nicholas 352.934<br>
USAAshley WAGNER 463.107<br>
CANKaetlyn OSMOND 462.546<br>
GBRJenna MCCORKELL 450.091<br>
The first three letters represent the team.
the rest of the text is the the competitors name.
The last digit is the score the competitor recived.
Code so far:
import java.util.Arrays;
public class project2 {
public static void main(String[] args) {
// TODO Auto-generated method stub
String[] array = new String[41];
String[] info = new String[41];
String[] stats = new String[41];
String[] team = new String[41];
//.txt file location
FileInput fileIn = new FileInput();
fileIn.openFile("C:\\Users\\O\\Desktop\\turn in\\team.txt");
// txt file to array
int i = 0;
String line = fileIn.readLine();
array[i] = line;
i++;
while (line != null) {
line = fileIn.readLine();
array[i] = line;
i++;
}
//Splitting up Info/team/score into seprate arrays
for (int j = 0; j < 40; j++) {
team[j] = array[j].substring(0, 3).trim();
info[j] = array[j].substring(3, 30).trim();
stats[j] = array[j].substring(36).trim();
}
// Random stuff i have been trying
System.out.println(team[1]);
System.out.println(info[1]);
System.out.println(stats[1]);
MyObject ob = new MyObject();
ob.setText(info[0]);
ob.setNumber(7, 23);
ob.setNumber(3, 456);
System.out.println("Text is " + ob.getText() + " and number 3 is " + ob.getNumber(7));
}
}
I'm pretty much stuck at this point because I am not sure how to add each teams score together.
This looks like homework... First of all you need to examine how you are parsing the strings in the file.
You're saying: the first 3 characters are the country, which looks correct, but then you set the info to the 4th through the 30th characters, which isn't correct. You need to dynamically figure out where that ends and the score begins. There is a space between the "info" and the "stats," knowing that you could use String's indexOf function. (http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#indexOf(int))
Have a look at Maps.
A map is a collection that allows you to get data associated with a key in a very short time.
You can create a Map where the key is a country name, with value being the total points.
example:
Map<String,Integer> totalScore = new HashMap<>();
if (totalScore.containsKey("COUNTRYNAME"))
totalScore.put("COUNTRYNAME", totalScore.get("COUNTRYNAME") + playerScore)
else
totalScore.put("COUNTRYNAME",0)
This will add to the country score if the score exists, otherwise it will create a new totalScore for a country initialized to 0.
Not tested, but should give you some ideas:
public static void main(String... args)
throws Exception {
class Structure implements Comparable<Structure> {
private String team;
private String name;
private Double score;
public Structure(String team, String name, Double score) {
this.team = team;
this.name = name;
this.score = score;
}
public String getTeam() {
return team;
}
public String getName() {
return name;
}
public Double getScore() {
return score;
}
#Override
public int compareTo(Structure o) {
return this.score.compareTo(o.score);
}
}
File file = new File("path to your file");
List<String> lines = Files.readAllLines(Paths.get(file.toURI()), StandardCharsets.UTF_8);
Pattern p = Pattern.compile("(\\d+(?:\\.\\d+))");
List<Structure> structures = new ArrayList<Structure>();
for (String line : lines) {
Matcher m = p.matcher(line);
while (m.find()) {
String number = m.group(1);
String text = line.substring(0, line.indexOf(number) - 1);
double d = Double.parseDouble(number);
String team = text.substring(0, 3);
String name = text.substring(3, text.length());
structures.add(new Structure(team, name, d));
}
}
Collections.sort(structures);
List<Structure> topFive = structures.subList(0, 5);
for (Structure structure : topFive) {
System.out.println("Team: " + structure.getTeam());
System.out.println("Name: " + structure.getName());
System.out.println("Score: " + structure.getScore());
}
}
Just remove <br> from your file.
Loading file into memory
Your string splitting logic looks fine.
Create a class like PlayerData. Create one instance of that class for each row and set all the three fields into that using setters.
Keep adding the PlayerData objects into an array list.
Accumulating
Loop through the arraylist and accumulate the team scores into a hashmap. Create a Map to accumulate the team scores by mapping teamCode to totalScore.
Always store row data in a custom object for each row. String[] for each column is not a good way of holding data in general.
Take a look in File Utils. After that you can extract the content from last space character using String Utils e removing the <br> using it as a key for a TreeMap. Than you can have your itens ordered.
List<String> lines = FileUtils.readLines(yourFile);
Map<String, String> ordered = new TreeMap<>();
for (String s : lines) {
String[] split = s.split(" ");
String name = split[0].trim();
String rate = splt[1].trim().substring(0, key.length - 4);
ordered.put(rate, name);
}
Collection<String> rates = ordered.values(); //names ordered by rate
Of course that you need to adjust the snippet.
I am getting data from database for specific category.
Suppose I select or pass data to query that category is Laptop then it give me data of all attribute and it's value.
Like :
My Code to getting and display data on JSP page is :
<%
List<String> attribNameList = (List<String>)request.getAttribute("attribName");
List<String> attribValueList = (List<String>)request.getAttribute("attribValue");
List<String> attribDataList = (List<String>)request.getAttribute("attribData");
String aname,aval,adata;
for(int i = 0 ; i<attribValueList.size() ; i++)
{
aname = attribNameList.get(i);
aval = attribValueList.get(i);
adata = attribDataList.get(i);
%>
<a><%=i%><%= aname %></a>
<a><%= aval %></a>
<%
if(adata == null)
{
}
else
{
%>
<a><%= adata %></a>
<%
}
%>
<br>
<%
}
%>
Here aname display attribute name i.e. RAM, Processor, etc.
aval display value i.e. 4, 2.8, etc.
and adata display last data i.e. GB, GHz, MP, etc.
Now I want to display data as category wise like all memory attribute will display first.
Like :
RAM 4 GB
HDD 1 TB
Cache 3 MB, etc.
How can I display data in such format ?
I have tried using if condition where adata variable checked with
if(adata.equals("GB")||adata.equals("TB")||adata.equals("MB"))
{
//memory category data display
}
else
{
//Other data
}
but it isn't working.
Any Suggestion Please...
How about creating a custom object to store your entries:
class MyDataRow implements Comparable<MyDataRow> {
private String aname;
private String aval;
private String adata;
// getters, setters, constructors etc
#Override
public int compareTo(MyDataRow other) {
final int BEFORE = -1;
final int EQUAL = 0;
final int AFTER = 1;
if(other == null) return AFTER;
if(other.getAdata().equals(this.adata)) return EQUALS;
if(this.adata.equals("GB")||this.adata.equals("TB")||this.adata.equals("MB"))
{
if(other.getAdata().equals("GB") || xxxxxxx) return EQUAL;
return BEFORE;
}
if(next category in the list... etc etc)
}
}
Then the result of your database query populates a List. In MyDataRow, you override the 'compareTo' method with the ordering logic that you want. Before you enter the loop that prints out your list to the page, call Collections.sort(myDataRowList) :
List<MyDataRow> myDataRowList = new ArrayList<MyDataRow>();
for(int i = 0 ; i<attribValueList.size() ; i++)
{
aname = attribNameList.get(i);
aval = attribValueList.get(i);
adata = attribDataList.get(i);
myDataRowList.add(new MyDataRow(aname, aval, adata);
}
Collections.sort(myDataRowList); // now your myDataRowList is sorted in the order you want
for(MyDataRow myDataRow : myDataRowList) {
// print rows to screen
}
I'm looking for a way to translate an EMV response with Java like with this online option:
http://www.emvlab.org/tlvutils/
where you put something like this EMV response:
6f3a8407a0000000031010a52f500b56495341204352454449548701015f2d086573656e707466729f12074352454449544f9f1101019f38039f1a02
and it will show you everything perfectly, I started doing something by myself but then I realize that maybe we could have two 9F38(PDOL) Strings not neccesary two same tags cuz I know it's impossible but maybe the value of a tag end in 9F and the start of the next tag would be 38 and that would give me an error... Now that I mention it, is that possible? cuz that was one of the main reasons why I stopped doing my own function..
Does any of you have written a function to do this already?
Thanks!
https://github.com/binaryfoo/emv-bertlv should do the trick.
Using your example, the following code:
List<DecodedData> decoded = new RootDecoder().decode("6f3a8407a0000000031010a52f500b56495341204352454449548701015f2d086573656e707466729f12074352454449544f9f1101019f38039f1a02", "EMV", "constructed");
new DecodedWriter(System.out).write(decoded, "");
Will output:
[6F (FCI template)] 8407A0000000031010A52F500B56495341204352454449548701015F...1A02
[84 (dedicated file name)] A0000000031010
[A5 (FCI proprietary template)] 500B56495341204352454449548701015F2D086573656E707466729F...1A02
[50 (application label)] VISA CREDIT
[87 (application priority indicator)] 01
[5F2D (language preference)] esenptfr
[9F12 (application preferred name)] CREDITO
[9F11 (issuer code table index)] 01
[9F38 (PDOL - Processing data object list)] 9F1A02
9F1A (terminal country code) 2 bytes
This project has code to deal with EMV data http://code.google.com/p/javaemvreader/
You are on the right track. You can easily build your own EMV parser using the technique call TLV (Tag Length Value). Your raw data always comes back with a Tag, then after the tag is the length, using the length can get you the value.
So create three methods
method 1: Contains all the short tags
method 2: Contains all the long tags
method 3: Contains all the proprietary tags
So when you pass in your raw emv tag:
6f3a8407a0000000031010a52f500b56495341204352454449548701015f2d086573656e707466729f12074352454449544f9f1101019f38039f1a02
Loop through all those three methods, it will give you all the nice information that you need.
Use below function which will gives you hashmap of TLV value
public LinkedHashMap parseBERTLVTag(String tlv) throws DecoderException
{
if(tlv==null || "".equalsIgnoreCase(tlv)){
return null;
}
System.out.println("============= START ["+tlv+"]==================");
boolean inTagRead= true;
Map<String,String> tags= new HashMap<>();
StringBuilder _tmp = new StringBuilder();
String lastTag = "";
int old_index = 0;
boolean isFirstTagByte = true;
int len = 0;
boolean more=true;
String data = "";
while (more)
{
len = 0;
String hByte = tlv.substring(old_index,(old_index = old_index+2));
if(inTagRead)
{
if(isLastTagByte(hByte, isFirstTagByte))
{
inTagRead=false;
_tmp.append(hByte);
lastTag = _tmp.toString();
System.out.println("Tag["+lastTag+"]");
tags.put(lastTag, null);
_tmp= new StringBuilder();
}else
{
_tmp.append(hByte);
}
isFirstTagByte = false;
}else//Length
{
isFirstTagByte = true;
if(isLastLengthByte(hByte)) {
inTagRead=true;
_tmp.append(hByte);
len = Integer.parseInt(_tmp.toString(), 16 );
//read len*2
System.out.println(" Length ["+len+"]");
data = tlv.substring(old_index, (old_index = old_index+len*2));
String tmpData= lastTag+":"+_tmp.toString()+":h"+data;
System.out.println(" Data ["+tmpData+"]");
_tmp = new StringBuilder();
tags.put(lastTag, tmpData);
}else
{
_tmp.append(hByte);
}
}
more= tlv.length()<=old_index?false:true;
System.out.println("tag "+lastTag+" value "+data+" length "+len);
if(lastTag.length() > 0 && data.length() > 0 && len > 0){
if(!map.containsKey(lastTag)){
map.put(lastTag,new TLVModel().setTag(lastTag).setLength(len).setValue(data));
}
}
}//END OF WHILE
System.out.println("------------ as MAP ---------------------");
System.out.println("size "+map.size());
for (Map.Entry mp:map.entrySet()){
System.out.println("key "+mp.getKey()+" value "+mp.getValue());
}
return map.size() > 0 ? map : null;
}
I am trying to get all the followersIDs from an a twitter account with about 150.000 followers. I later want to map their location, but first I need all those IDs.
at the moment I am using this code:
long lCursorIDs = -1;
long[] fArray = new long[100];
do
{
fArray = twitter.getFollowersIDs(name, lCursorIDs).getIDs();
} while (twitter.getFollowersIDs(name, lCursorIDs).hasNext ());
try
{
PrintWriter pr = new PrintWriter(filenameOutput);
for (int i=0; i<fArray.length ; i++)
{
pr.println(fArray[i]);
}
pr.close();
System.out.println("Follower IDs collected and saved to file: " + filenameOutput );
}
catch (Exception e)
{
e.printStackTrace();
System.out.println("No such file exists.");
}
This works for User with less followers. but with that many it always returns an error message - rate limit exceeded.
I was thinking about getting only a certain number of followersIDs per hour, but I am not sure how to do that and not start every hour from the beginning with the first follower. also, I am not sure how many followers I can get with one request. maybe it is 100, as with the "lookupUser" method but I am not sure.. any ideas/suggestions?
EDIT: ok, I just tried to get the followerIDs of an account with 2700 followers and it stored them correctly in the text file. It also only "cost" one request. than I changed the account name to an account with 15500 followers and it crashes again with an rate limit exceeded message. I don´t get why since it´s only roughly 6 times as many followers but all the remaining requests get spend.. any ideas on what I´m doing wrong?
the answer:
int numberOfFollowers;
numberOfFollowers = user.getFollowersCount();
//CREATE ARRAYS FOR FOLLOWER IDS
long cursor = -1;
long[] fArray = new long[numberOfFollowers];
long[] local = new long[5000];
IDs ids = twitter.getFollowersIDs(name, cursor);
int j = 0;
int x = 5000;
int durchgang = 1;
int d_anzahl = 1 + numberOfFollowers / 5000;
//STROE FOLLOWER IDS IN ARRAYS
do
{
ids = twitter.getFollowersIDs(name, cursor);
local = twitter.getFollowersIDs(name, cursor).getIDs();
System.out.println("Durchgang: " + durchgang + " / " + d_anzahl );
System.arraycopy(local, 0, fArray, j * x , local.length);
j++;
durchgang++;
cursor = ids.getNextCursor();
} while (ids.hasNext());
this gets an array with all follower IDs of any twitter User. It calculates the number of loops needed to get all follower IDs and copys each array of 5000 IDs into new array which has all IDs at the end.