package regxdemo;import java.io.BufferedReader;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;public class CountFile {    /**     * @param args     */    static int cntCode=0, cntNode=0, cntSpace=0;    static boolean flagNode = false;    public static void main(String[] args) {        // TODO Auto-generated method stub        BufferedReader br = null;        try {            br = new BufferedReader(new FileReader("TestFile.java"));            String line=null;            while((line = br.readLine()) != null)                pattern(line);        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }                System.out.println("注释行： " + cntNode);        System.out.println("空行： " + cntSpace);        System.out.println("代码行： " + cntCode);        System.out.println("总行： " + (cntNode+cntSpace+cntCode));            }    private static void pattern(String line) {        // TODO Auto-generated method stub        String regxNodeBegin = "\\s*/\\*.*";        String regxNodeEnd = ".*\\*/\\s*";        String regx = "//.*";        String regxSpace = "\\s*";        if(line.matches(regxNodeBegin) && line.matches(regxNodeEnd)){            ++cntNode;            return ;        }        if(line.matches(regxNodeBegin)){            ++cntNode;            flagNode = true;        } else if(line.matches(regxNodeEnd)){            ++cntNode;            flagNode = false;        } else if(line.matches(regxSpace))             ++cntSpace;        else if(line.matches(regx))             ++cntNode;        else if(flagNode)             ++cntNode;        else ++cntCode;    }}