package day16;import java.io.BufferedReader;import java.io.File;import java.io.FileFilter;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStreamReader;public class LineCounter {    private File directory;    private int sumLine = 0;    public LineCounter(File directory) {        super();        this.directory = directory;    }    public int getSumLine(String strFileter) {        sumLine = lineNumberinDirectory(strFileter);        return sumLine;    }    private int lineNumberinDirectory(final String strFilter) {        int lineNumber = 0;        File[] filesFiltered = directory.listFiles(new FileFilter() {            public boolean accept(File pathname) {                if (pathname.isFile() && pathname.getName().indexOf(strFilter) != -1)                    return true;                return false;            }        });        for (File file : filesFiltered)            lineNumber += lineNumberinFile(file);        return lineNumber;    }    private int lineNumberinFile(File file) {        BufferedReader br = null;        int lineNumber = 1;        try {            br = new BufferedReader(new InputStreamReader(new FileInputStream(file)));            while (br.readLine() != null)                lineNumber++;        } catch (FileNotFoundException e) {            System.out.println(e.getMessage());            return 0;        } catch (IOException e) {            System.out.println(e.getMessage());            return 0;        }        return lineNumber;    }}