Java 按行读取文件内容（控制台输入文件名，读取行数）

import java.io.*;
public class FileReadingTest {
	
	public static void main(String args[]){
	String fileName = args[0];
	int line =Integer.parseInt(args[1]);
	String contents = "";
	try {
	FileReader fileReader = new FileReader(fileName);
	BufferedReader bufferedReader = new BufferedReader(fileReader);
	
	for(int i = 0;i<line;i++) {
		if((contents = bufferedReader.readLine())!=null)
			System.out.println(contents);
	}
	bufferedReader.close();
	fileReader.close();
	}
	catch (IOException e) {
	System.out.println("Errors occured");
	System.exit(1);
	}
	
	}
	
}