在【金阳光测试】Android自动化第一季第一讲——预备知识中有这样一个面试题

题目如下：

编写一个脚本，统计log文件中首个单词出现的次数，如:

error:xxx

waring:xxx

error:xxx

waring:xxx

由于自身能力及对java的不了解，请大家多多指点，自己写的程序如下：

FileStudy.java:

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;public class FileStudy {   public static void main(String[] args){getFileDemo d = new getFileDemo();d.getData();}}

getFileDemo.java:

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;public class getFileDemo {String s = "";String lines = "";String Temp = "";String temp = "";String pathName = "E:\\practise\\Java_File\\log.txt";String[] tempString;int endIndex = 0;int k = 0;public void getData(){try {File filename = new File(pathName);InputStreamReader reader = new InputStreamReader(new FileInputStream(filename));BufferedReader br = new BufferedReader(reader);while((lines =br.readLine()) != null){
//              System.out.println(lines);s += lines + "\n"; }
//          System.out.println("------------------");
//          System.out.println(s);String[] b = s.split("\n");
//          System.out.println("------------------");
//          for (int i=0;i<b.length;i++){
//              System.out.println(b[i]);
//          }
//          System.out.println("------------------");for (int i=0;i<b.length;i++){endIndex = b[i].indexOf(":");
//              System.out.println(endIndex);temp += b[i].substring(0, endIndex)+"\n";tempString = temp.split("\n");}
//          System.out.println("------------------");for (int i=0;i<tempString.length;i++){if(tempString[i].equals(tempString[0])){k = k + 1;}
//              System.out.println(tempString[i]);}System.out.println(k);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}
}

金阳光修改后给出的代码如下：

【差距立马就体现出来了。。。】

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;public class getFileDemo {
String lines = "";String pathName = "c:\\log.txt";int temp=0;static Map <String,Integer> hashMap = new HashMap<String,Integer>();public void getData() {try {File filename = new File(pathName);InputStreamReader reader = new InputStreamReader(new FileInputStream(filename));BufferedReader br = new BufferedReader(reader);String everyLineData =null;hashMap.put("error", 0);hashMap.put("debug", 0);while ((lines = br.readLine()) != null) {everyLineData= lines;System.out.println(lines);String data = everyLineData.split(":")[0];if(hashMap.containsKey(data)){hashMap.put(data, hashMap.get(data)+1);}}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public static void main(String[] args) {getFileDemo d = new getFileDemo();d.getData();Iterator iterator = hashMap.entrySet().iterator();while (iterator.hasNext()) {Entry entry= (Entry) iterator.next();String key= (String) entry.getKey();int value =  (int) entry.getValue();System.out.println(key+value);}}}

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编写一个脚本，统计log文件中首个单词出现的次数

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