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这里文件read.txt包含多个unicode单词和代理对..在for循环中使用k = 3来从文件read.txt中获取多个三个字母的单词。我在计算代理对时遇到问题..（即）字符与变音符号一起计数...想要一些想法来计算代理对...当运行下面的代码时......得到这个错误......

  

java.lang.ArrayIndexOutOfBoundsException：13   在pp.main（pp.java:36）   建立成功（总时间：1秒）

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class pp {

    public static void main(String[] args) throws IOException {
     FileReader fr = null;
     BufferedReader br =null;
     FileWriter fw=null;
        BufferedWriter bw=null;

        String [] stringArray;
           int arrayLength ;
           String s="";
       String stringLine="";
        try{
    fr = new FileReader("D:\\OFFICE\\read.txt");
    fw=new FileWriter("D:\\OFFICE\\write.txt");
    br = new BufferedReader(fr);
    bw=new BufferedWriter(fw);
   while((s = br.readLine()) != null)
   {
        stringLine = stringLine + s;
        stringLine = stringLine + " ";
  }
    stringArray = stringLine.split(" ");
   arrayLength=stringLine.codePointCount(0, stringLine.length());
 for (int i = 0; i <arrayLength; i++)  
 {
 for(int k=3;k>stringArray[i].length();i++) 
    //for getting all 3 char unicode  lines
          {
      System.out.println(stringArray[i]);
           bw.newLine();
         } 
   int n=stringLine.offsetByCodePoints(0, i);
   arrayLength=stringLine.codePointAt(n);
      }
   fr.close();
    br.close();
    bw.flush();
        bw.close();
    }catch (ArrayIndexOutOfBoundsException e) {
    e.printStackTrace();
     }}}