IO 最快的read 和 write

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;

public class IOTest {
    public static void main(String[] args) {
        PrintWriter pw;
        try {
            pw = new PrintWriter("C:\temp\printwrite.txt");
            pw.println("hello test");
            pw.println("this is holiday");
            pw.close();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        FileReader fileReader;
        BufferedReader bufferedReader;
        try {
            fileReader = new FileReader("C:\temp\test.txt");
            bufferedReader = new BufferedReader(fileReader);
            
            System.out.println(bufferedReader.readLine());
            System.out.println(bufferedReader.readLine());
            
            bufferedReader.close();
            
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
    }
}