第一次作业 源代码计算器

<pre name="code" class="java">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;

public static void main(String[] args) {
File f = new File("E:\\workplace\\wyp\\src\\iotest\\StaticsCodeingLine.java");
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();
}
}
}
}
}

</pre><pre name="code" class="java"><img src="https://img-blog.csdn.net/20150517132536839?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdTAxMzk5MzI3Mg==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />