how I deal with this ArrayIndexOutOfBoundException in this noun finding program

Question

I have came out with this problem that I couldn't find a way to solve this exception. Please do help. My program is trying to find out nouns,verbs and adjectives from a user given sentence(Here I just tried to find out the nouns). If I had made errors in my program then please point those errors , so that I can correct it. Here is my 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());
    }

    for (Parse child : p.getChildren()) {
         getNounPhrases(child);
    }
}


public void parserAction() throws Exception {
    try{
    InputStream is = new FileInputStream("en-parser-chunking.bin");
    ParserModel model = new ParserModel(is);
    Parser parser = ParserFactory.create(model);
    for(int i=1; i <= lineArr.length; i++){
    Parse topParses[] = ParserTool.parseLine(lineArr[i], parser , 1);      //getting Exception

    for (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 the output of the program is:

java.lang.ArrayIndexOutOfBoundsException: 1

score 2 · Answer 1 · answered Apr 21 '16 at 20:28

You have:

for(int i=1; i <= lineArr.length; i++) {
    Parse topParses[] = ParserTool.parseLine(lineArr[i], parser , 1);
}

The last index of an array is always one less than the length of it, since the first index is 0 and not 1. Therefore, lineArr[lineArr.length-1] is the last index.

You need to change i <= lineArr.length to i < lineArr.length.

Moreover, i starts at 1 and not 0. If you do this you need to make sure your array has at least two elements, which you have not. You need to change this as well.

Final result should be:

for(int i=0; i < lineArr.length; i++) {
    Parse topParses[] = ParserTool.parseLine(lineArr[i], parser , 1);
}

how I deal with this ArrayIndexOutOfBoundException in this noun finding program

1 Answers1