编写一个脚本，统计log文件中首个单词出现的次数

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 block
				e.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 block
			e.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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