java - how I deal with this ArrayIndexOutOfBoundException in this noun finding program -

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• what causes java.lang.arrayindexoutofboundsexception , how prevent it? 14 answers

i have came out problem couldn't find way solve exception. please help. program trying find out nouns,verbs , adjectives user given sentence(here tried find out nouns). if had made errors in program please point errors , can correct it. here code:

enter code here  import java.io.fileinputstream; import java.io.inputstream; import java.util.hashset; import java.util.set;  import opennlp.tools.cmdline.parser.parsertool; import opennlp.tools.parser.parse; import opennlp.tools.parser.parser; import opennlp.tools.parser.parserfactory; import opennlp.tools.parser.parsermodel; import opennlp.tools.util.objectstream;  public class parsertest {  static set<string> nounphrases = new hashset<>(); static set<string> adjectivephrases = new hashset<>(); static set<string> verbphrases = new hashset<>(); static string result; gui_demo gd = new gui_demo(); string line = practice.gui_demo.textfield1.gettext(); public parsertest(string line) {     // todo auto-generated constructor stub }   public parsertest() {     // todo auto-generated constructor stub }  //objectstream<string> linearr = new plaintextbylinestream(new stringreader(line));  string[] linearr = line.split(".");  public void getnounphrases(parse p) {     if (p.gettype().equals("nn") || p.gettype().equals("nns") || p.gettype().equals("nnp") || p.gettype().equals("nnps")) {          nounphrases.add(p.getcoveredtext());          system.out.println(p.getcoveredtext());     }      if (p.gettype().equals("jj") || p.gettype().equals("jjr") || p.gettype().equals("jjs")) {         adjectivephrases.add(p.getcoveredtext());          system.out.println(p.getcoveredtext());     }      if (p.gettype().equals("vb") || p.gettype().equals("vbp") || p.gettype().equals("vbg")|| p.gettype().equals("vbd") || p.gettype().equals("vbn")) {         verbphrases.add(p.getcoveredtext());          system.out.println(p.getcoveredtext());     }      (parse child : p.getchildren()) {          getnounphrases(child);     } }   public void parseraction() throws exception {     try{     inputstream = new fileinputstream("en-parser-chunking.bin");     parsermodel model = new parsermodel(is);     parser parser = parserfactory.create(model);     for(int i=1; <= linearr.length; i++){     parse topparses[] = parsertool.parseline(linearr[i], parser , 1);      //getting exception      (parse p : topparses){         //p.show();         getnounphrases(p);     }     }        }catch(exception e){         system.out.print(e);     } } public static void main(string[] args) throws exception {      new parsertest().parseraction();     result = "nouns :" +nounphrases.toarray(new string[nounphrases.size()]);//+ "\n" + "verbs:" + verbphrases + "adjectives:" + adjectivephrases;     /*system.out.println("list of noun parse : "+nounphrases);     system.out.println("list of adjective parse : "+adjectivephrases);     system.out.println("list of verb parse : "+verbphrases); */     }  } 

and output of program is:

java.lang.arrayindexoutofboundsexception: 1

you have:

for(int i=1; <= linearr.length; i++) {     parse topparses[] = parsertool.parseline(linearr[i], parser , 1); } 

the last index of array 1 less length of it, since first index 0 , not 1. therefore, linearr[linearr.length-1] last index.

you need change i <= linearr.length i < linearr.length.

moreover, i starts @ 1 , not 0. if need make sure array has @ least 2 elements, have not. need change well.

final result should be:

for(int i=0; < linearr.length; i++) {     parse topparses[] = parsertool.parseline(linearr[i], parser , 1); }