Java基础----LineNumberReader

package com.cug.linenumber;

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

public class LineNumberReaderDemo {
<span style="white-space:pre">	</span>public static void main(String[] args) throws IOException {
<span style="white-space:pre">		</span>LineNumberReader lnr = new LineNumberReader(new FileReader("a.txt"));
<span style="white-space:pre">		</span>String line = null;
<span style="white-space:pre">		</span>
<span style="white-space:pre">		</span>while((line = lnr.readLine()) != null){
<span style="white-space:pre">			</span>System.out.println(lnr.getLineNumber()+":"+line);
<span style="white-space:pre">		</span>}
<span style="white-space:pre">		</span>
<span style="white-space:pre">		</span>lnr.close();
<span style="white-space:pre">	</span>}
}