LogTest.java Source code

Introduction

Here is the source code for LogTest.java

Source

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.util.TreeMap;

public class LogTest {
    public static void main(String[] args) throws IOException {
        String inputfile = args[0];
        String outputfile = args[1];

        Map<String, Integer> map = new TreeMap<String, Integer>();

        Scanner scanner = new Scanner(new File(inputfile));
        while (scanner.hasNext()) {
            String word = scanner.next();
            Integer count = map.get(word);
            count = (count == null ? 1 : count + 1);
            map.put(word, count);
        }
        scanner.close();

        List<String> keys = new ArrayList<String>(map.keySet());
        Collections.sort(keys);

        PrintWriter out = new PrintWriter(new FileWriter(outputfile));
        for (String key : keys)
            out.println(key + " : " + map.get(key));
        out.close();
    }
}