《Java程序设计》第一次作业：源代码计算器

package iotest;

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

public class StaticsCodeingLine {

	private static int whiteLines = 0;
	private static int commentLines = 0;
	private static int normalLines = 0;
	
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		File f = new File("C:\\Users\\Administrator\\Workspaces\\MyEclipse 8.5\\TYH\\src\\iotest\\StaticsCodeingLine.java");//注意路径 
		sumCode(f);
	}
	
	private static void sumCode(File file) { 
		BufferedReader br = null; 
		boolean comment = false; 
		try { 
			br = new BufferedReader(new FileReader(file)); 
			String line = ""; 
			try { 
				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 (true == comment) { 
						commentLines++; 
						if (line.endsWith("*/")) { 
							comment = false; 
						} 
					} else if (line.startsWith("//")) { 
							commentLines++; 
					} else { 
						normalLines++; 
					} 
				} 
			} catch (IOException e) { 
					e.printStackTrace(); 
			} 
		} catch (FileNotFoundException e) { 
				e.printStackTrace(); 
		} finally { 
			if (br != null) { 
				try { 
					System.out.println("空行数："+whiteLines);
					System.out.println("注释行数："+commentLines);
					System.out.println("代码行数："+normalLines);
					br.close(); 
					br = null; 
				} catch (IOException e) { 
					e.printStackTrace(); 
				} 
			} 
		} 
	}
}