LineNumberReader获取文件行数

package io;

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

public class LineNumberReaderTest {
	public static void main(String[] args) throws Exception{
		int lineNumber = getFileLineNumber("D:/Projects/JDK/src/io/info.txt");
		
		System.out.println("the line number of specified file is "+lineNumber);
	}
	
	public static int getFileLineNumber(String filePath) throws Exception{
		LineNumberReader lineNumberReader = new LineNumberReader(new FileReader(filePath));
		// it will return the number of characters actually skipped 
		lineNumberReader.skip(Long.MAX_VALUE);
		
		int lineNumber = lineNumberReader.getLineNumber();
		
		lineNumber++;
		
		lineNumberReader.close();
		
		return lineNumber;
	}
}