Dear all,

For a school project I'm gathering peoples 'thoughts' by using the following code:

1. import processing.pdf.*;
   
   
   boolean record;
   
   
   
   int teller = 3705;
   int lijn;
   
   import twitter4j.conf.*;
   import twitter4j.internal.async.*;
   import twitter4j.internal.org.json.*;
   import twitter4j.internal.logging.*;
   import twitter4j.http.*;
   import twitter4j.internal.util.*;
   import twitter4j.api.*;
   import twitter4j.util.*;
   import twitter4j.internal.http.*;
   import twitter4j.*;
   
   //import twitter4j.org.json.*;
   import twitter4j.*;
   import twitter4j.http.*;
   //import twitter4j.examples.*;
   
   PFont font;
   PFont font2;
   
   
   PImage b;
   
   int y[] = new int[3];
   float target[] = new float[3];
   
   //float timer = 200;
   
   String[] LABEL = {
     "x", "x", "x"
   };
   
   //Use this line for altering search results
2. 
   String searchTerms[] = {
     "denk -replies -filter:replies -RT lang:nl near:\"den haag\" within:15mi", "vind",
     "denk"
   };
   
   String gt[] = new String[3];
   String gf[] = new String[3];
   String gn[] = new String[3];
   
   
   
   int now;
   int lastSecond;
   String startTime;
   
   PImage profile;
   
   long lastId[] = new long[3];
   
   boolean connected = true;
   
   void setup() {
     size(900, 600);
     //size(800,450); //.75 size
     //size(533,300); //halfsize
   
     smooth();
     // font = loadFont("Sansa-Normal-48.vlw");
     font = createFont("Aaux ProBlack", 60);
   
     font2 = createFont("Aaux ProLight", 60);
   
     // font = loadFont("AutoThree-Regular-48.vlw");
   
     // font2 = loadFont("TrebuchetMS-Italic-22.vlw");
   
     if (connected) {
       Twitter twitter = new Twitter();
       for (int party = 0; party < 3; party++) {
         try {
           Query query = new Query(searchTerms[party]);
           QueryResult result = (QueryResult) twitter.search(query);
   
           java.util.List tweets = result.getTweets();
           println(tweets.size());
           Tweet t = (Tweet) tweets.get(0);
           lastId[party] = t.getId();
           println(lastId[party]);
           gt[party] = t.getText();
           gf[party] = t.getFromUser();
           gn[party] = t.getProfileImageUrl();
         }
         catch (Exception e) {
           System.out.println(e);
         }
       }
     }
   
     for (int i = 0; i < 3; i++) {
       target[i]=height-12;
     }
   
     startTime = hour() + ":" + trim(nfs(minute(), 2));
   
     textAlign(LEFT);
   }
   
   
   void draw() {
   
     teller = teller+1;
   
   
     if (record) {
       beginRecord(PDF, teller+".pdf");
     }
   
     now = second();
   
     {
       background(1, 1, 255);
   
   //KLEURVLAK ACHTER DE TWEET
       //noStroke();
       //fill(2, 2, 216);
       //rect(140, 0, 600, height);
   
   
       //BEWEGENDE LIJN
       stroke(226, 204, 0);
       strokeWeight(2);
       line(1, lijn, width, lijn);
   
       lijn = lijn+1;
       if (lijn > height) {
         lijn = 0;
       }
     }
   
     int maximum = max(y[0], y[1], y[2]);
     int total = y[0]+y[1]+y[2];
   
     fill(200, 200);
     textFont(font, 15);
     fill(0, 0, 200);
     textFont(font2, 15);
   
   
     for (int i = 0; i < 1; i++) {
       if (y[i]!=0) target[i] = 0.95*target[i]  + 0.05*map(y[i], 0, maximum, height, height/3);
   
   
       stroke(0);
       strokeWeight(4);
   
       fill(255);
   
       // bericht
       textFont(font2, 35);
   
   
       text(gt[i], 144, 200, 600, 300); //width*.14 use to be 150, .83 replaces 500, .215 replaces 280, .5 replaces 300 
   
         textFont(font, 35);
   
       fill(0);
   
       // username
   
   
       text(gf[i]+ " denkt:", 140, 100, 600, 600); //width*.14 use to be 150, .83 replaces 500, .215 replaces 280, .5 replaces 300
     }
   
     //every 3 seconds
     if (now!= lastSecond && now%3==0) {
       //do a new twitter search since the last ID
       if (connected) {
         Twitter twitter = new Twitter();
         for (int party = 0; party < 3; party++) {
           try {
             Query query = new Query(searchTerms[party]);
             query.setSinceId(lastId[party]);
             QueryResult result = (QueryResult) twitter.search(query);
             java.util.List tweets = result.getTweets();
             //println(tweets.size());
             if (tweets.size()>0) {
               Tweet t = (Tweet) tweets.get(0);
               lastId[party] = t.getId();
               gt[party] = t.getText();
               gf[party] = t.getFromUser();
               gn[party] = t.getProfileImageUrl();
               println(gt[party]);
               //println(lastId[party]);
               y[party]=min(height/6*height, y[party]+tweets.size());   // height/6 replaces 100
             }
           }
           catch (Exception e) {
             System.out.println(e);
           }
         }
       }
       else {
         for (int i = 0; i < 3; i++) {
           y[i]+= int(random(10));
         }
       }
     }
   
     lastSecond = now;
   
   
     if (record) {
       endRecord();
       record = false;
     }
   }
   
   
   //String timestamp() {
   //Calendar now = Calendar.getInstance();
   //return String.format("%1$ty%1$tm%1$td_%1$tH%1$tM%1$tS", now);
   //}
   
   
   
   void keyReleased() {
   
   
     if (key == 'p' || key == 'P') record = true;
   }
   
   

And it works pretty well. At first I used just the searchword "Denk" (which means "Think" in dutch), and then I started specifying my search results, for example, I wanted only dutch tweets with the word denk. This was also succesfull by adding: "lang:nl" to the search-line. Then I wanted to specify a location to look for tweets, which I should be able to do by adding: near:\"den haag\" within:15mi. And this is where all goes wrong, cause once I added this location to my search, I got a NullPointerException. I tried increasing the range from 15mi to 1500mi, just to see if it would get any results at all, but I still got a NullPointerException.

This is the specific line that I'm struggling with:

1. String searchTerms[] = {
     "denk -replies -filter:replies -RT lang:nl near:\"den haag\" within:15mi", "vind",
     "denk"
   };

So my question is; how can I change it so I can find location specific tweets?
I  hope this was clear enough, thanks for reading.