《Java程序设计》第一次作业：源代码计算器 目标二

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

public class StaticsCodeingLine3 {
private static int whiteLines = 0;
private static int commentLines = 0;
private static int normalLines = 0;

/**
* @param args
*/
public static void main(String[] args) throws IOException
{
/**
char a;
System.out.print("输入一个路径:");
a = (char)System.in.read();
System.out.println("输入的字符是:"+a);
//f = (char)a;
File f = new File("D:\\360\\shuchu.txt");
sumCode(f);
**/
Scanner in = new Scanner(System.in);
String str =in.nextLine();
try{
@SuppressWarnings("unused")
String encoding="";
File f =new File("D:\\360\\"+str);
sumCode(f);
}catch(Exception e){
System.out.println(e);
}

}
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();
}
}
}
}
}