CodeCounter

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

import javax.swing.JTextArea;

public class CodeCounter {
  
	static long normalLines = 0;//代码正常行数
	static long commentLines = 0;//注释行数
	static long whiteLines = 0;//空行数
	static String str = "";
	public static void main(String[] args) {
		File f = new File("D:/Program Files/MyEclipse 6.0/WorkSpace1.5/ToolClass/src");//统计该目录下所有的以“.java”结束的文件行数
		File[] codeFiles = f.listFiles();
		/*for(File child : codeFiles){
			if(child.getName().matches(".*\\.java$")) {
				parse(child);
			}
		}*/
		System.out.println(f.getName());
		tree(f, 1);
		
		System.out.println("normalLines:" + normalLines);
		System.out.println("commentLines:" + commentLines);
		System.out.println("whiteLines:" + whiteLines);
		System.out.println("allLines:" + (normalLines+commentLines+whiteLines));
		
	}
	
	public static void count(String file,JTextArea area) {
		File f = new File(file);//统计该目录下所有的以“.java”结束的文件行数
		File[] codeFiles = f.listFiles();
		/*for(File child : codeFiles){
			if(child.getName().matches(".*\\.java$")) {
				parse(child);
			}
		}*/
		System.out.println(f.getName());
		area.append(f.getName());
		area.append(tree(f, 1,area));
		
		System.out.println("normalLines:" + normalLines);
		System.out.println("commentLines:" + commentLines);
		System.out.println("whiteLines:" + whiteLines);
		System.out.println("allLines:" + (normalLines+commentLines+whiteLines));
		String str = "normalLines:" + normalLines+"\n"+"commentLines:" 
		+ commentLines+"\n"+"whiteLines:" + whiteLines+"\n"+"allLines:" + (normalLines+commentLines+whiteLines);
		area.append(str);
	}
	//统计 f 目录下（包括子目录）所有的以“.java”结尾文件的行数
	private static void tree(File f, int level){
		String preStr = "";
		for(int i = 0; i < level; i++){
			preStr += "  ";
		}
		
		File []childs = f.listFiles();
		
		for(int i = 0; i<childs.length; i++){
			if(childs[i].getName().matches(".*\\.java$")) {
				parse(childs[i]);
			}
			System.out.println(preStr + childs[i].getName());
			if(childs[i].isDirectory()){
				tree(childs[i], level + 1);
			}
		}
	}
	//统计 f 目录下（包括子目录）所有的以“.java”结尾文件的行数
	private static String tree(File f, int level, JTextArea area){
		
		String preStr = "";
		for(int i = 0; i < level; i++){
			preStr += "  ";
		}
		
		File []childs = f.listFiles();
		
		for(int i = 0; i<childs.length; i++){
			if(childs[i].getName().matches(".*\\.java$")) {
				parse(childs[i]);
			}
			System.out.println(preStr + childs[i].getName());
			//area.append("\n"+preStr + childs[i].getName());
			str = str+preStr + childs[i].getName()+"\n";
			if(childs[i].isDirectory()){
				tree(childs[i], level + 1,area);
			}
		}
		return str;
	}
	
	//统计 f 目录下（不包括子目录） 所有的以".java"结尾的文件行数
	private static void parse(File f) {
		BufferedReader br = null;
		boolean comment = false;
		try {
			br = new BufferedReader(new FileReader(f));
			String line = "";
			while((line = br.readLine()) != null) {
				line = line.trim();
				if(line.matches("^[\\s&&[^\\n]]*$")) {
					whiteLines ++;
				} else if (line.startsWith("/*") && !line.endsWith("*/")) {
					commentLines ++;
					comment = true;	
				} else if (line.startsWith("/*") && line.endsWith("*/")) {
					commentLines ++;
				} else if (true == comment) {
					commentLines ++;
					if(line.endsWith("*/")) {
						comment = false;
					}
				} else if (line.startsWith("//")) {
					commentLines ++;
				} else {
					normalLines ++;
				}
			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if(br != null) {
				try {
					br.close();
					br = null;
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}

}