简单的词法分析java程序

public class xxxx {
    int xyz;
    xyz = 0;
}

输出应该是：

Reserved words:
class: 1
int: 2
public: 1

Other words:
xxxx: 1
xyz: 2,3

但是我目前的程序存在很多问题,所以我不知道最近会发生什么,所以我的程序修改或完全重写是值得欢迎的.我只是试图把java语言作为一种爱好,所以只要我能理解到底是什么,所有的帮助都是受欢迎的.我确信这个问题有一个简单的解决方案,但我的尝试没有用:(感谢您的帮助^^

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

public class LexicalAnalysis {

    private String[] keywords = { "abstract","boolean","byte","case","catch","char","class","continue","default","do","double","else","extends","final","finally","float","for","if","implements","import","instanceof","int","interface","long","native","new","package","private","protected","public","return","short","static","super","switch","synchronized","this","throw","throws","transient","try","void","volatile","while","false","true","null" };
    HashMap<String,ArrayList<Integer>> keywordsTable;

    HashMap<String,ArrayList<Integer>> otherWords = new HashMap<String,ArrayList<Integer>>();

    public LexicalAnalysis(String fileName){

        Scanner kb = null;
        int lineNumber = 0;

        try {
            kb = new Scanner(new File(fileName));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

          keywordsTable = new HashMap<String,ArrayList<Integer>>();
          for(int i = 0; i < 47; i++){
              keywordsTable.put(keywords[i],new ArrayList<Integer>());
          }

        while(kb.hasNextLine()){

            lineNumber++;

            String line = kb.nextLine();

            String[] lineparts = line.split("s+|.+|;+|(+|)+|"+|:+|[+|]+");

            for(String x: lineparts){

                ArrayList<Integer> list = keywordsTable.get(x);
                if(list == null){
                    list = otherWords.get(x);
                    if(list == null){
                        ArrayList<Integer> temp = new ArrayList<Integer>();
                        temp.add(lineNumber);
                        otherWords.put(x,temp);
                    }else{
                        otherWords.remove(x);
                        ArrayList<Integer> temp = new ArrayList<Integer>();
                        temp.add(lineNumber);
                        otherWords.put(x,temp);
                    }
                }else{
                    keywordsTable.remove(x);
                    ArrayList<Integer> temp = new ArrayList<Integer>();
                    temp.add(lineNumber);
                    keywordsTable.put(x,temp);
                }
            }
        }
        System.out.println("Keywords:");
        printMap(keywordsTable);
        System.out.println();
        System.out.println("Other Words:");
        printMap(otherWords);

    }
    public static void printMap(Map<String,ArrayList<Integer>> mp) {    
        Iterator<Map.Entry<String,ArrayList<Integer>>> it = mp.entrySet().iterator();    
        while (it.hasNext()) {        
            Map.Entry<String,ArrayList<Integer>> pairs = (Map.Entry<String,ArrayList<Integer>>)it.next();    
            System.out.print(pairs.getKey() + " = ");
            printList(pairs.getValue());
            System.out.println();
            it.remove();
        }
    }
    public static void printList(List x){

        for(Object m : x){
            System.out.print(m + ",");
        }

    }
    public static void main(String args[]){
        new LexicalAnalysis("lexitest.txt");
    }


}