LineNumberReaderExample.java

/*
 * Created on 13-3-29
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 * 
 * Copyright @2013 the original author or authors.
 */
package ch18io.file;

/**
 * Description of this file.
 *
 * @author XiongNeng
 * @version 1.0
 * @since 13-3-29
 */

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.LineNumberReader;

public class LineNumberReaderExample {
    public static void main(String[] args) {
        try {
            File file = new File("c:\\ihave10lines.txt");
            if (file.exists()) {
                FileReader fr = new FileReader(file);
                LineNumberReader lnr = new LineNumberReader(fr);
                int linenumber = 0;
                while (lnr.readLine() != null) {
                    linenumber++;
                }
                System.out.println("Total number of lines : " + linenumber);
                lnr.close();
            } else {
                System.out.println("File does not exists!");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}