linecounter.java

本源码使用eclipse开发。可以统计某个文件夹下具有某一后缀名所有文件的行数。可以用来统计源代码行数来了解自己的开发规模

package com.gosyl.linecounter;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.ArrayList;

public class LineCounter {
    /**
         * //TODO
         * 
         * @param args
         */
    public static void main(String[] args) throws Exception {
	LineCounter lineCounter = new LineCounter();
	String path="src/com/gosyl/linecounter/";
	String pre=".java";
	File[] files = lineCounter.getfiles(new File(path
		), pre);
	System.out.println("目录："+path);
	System.out.println("    文件数:"+ files.length
		+ "个("+pre+")文件");
	System.out.println("    代码行数：" + lineCounter.getLineCount(files)
		);
    }

    ArrayList<File> fileList = new ArrayList<File>();

    public LineCounter() {
    }

    public File[] getfiles(File base, String string) {
	File[] files = base.listFiles();

	if (files != null) {
	    for (File file : files) {
		if (file.isFile() && file.getName().endsWith(string)) {
		    fileList.add(file);
		} else if (file.isDirectory()) {
		    getfiles(file, string);
		}
	    }
	}

	File[] result = new File[fileList.size()];
	return fileList.toArray(result);
    }

    public int getLineCount(File[] files) throws Exception {
	int result = 0;
	for (File file : files) {
	    BufferedReader reader = new BufferedReader(new FileReader(file));
	    while (reader.readLine() != null)
		result++;
	}
	return result;
    }

}