JavaSE 高级 第16节 读取缓冲类BufferedReader

2016-07-24

字符流相关类：读取缓冲类

1，BufferedReader

package com.java1995;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;

public class TestBufferedReader {

    public static void main(String[] args) {
        InputStreamReader isr = null;
        BufferedReader br = null;

        try {
            isr = new InputStreamReader(new FileInputStream("D:\\workspace\\java_io\\in.txt"), "UTF-8");
            br = new BufferedReader(isr, 1000);
            br.mark(100);
            // 第一种，使用read()
            int c = 0;
            c = br.read();
            while (c != -1) {
                System.out.print((char) c);
                c = br.read();
            }
            // 第二种，使用readLine()
            System.out.println("------------------");
            br.reset();
            String str = br.readLine();
            while (str != null) {
                System.out.println(str);
                str = br.readLine();
            }
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            try {
                isr.close();
                br.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
}

【参考资料】

[1] Java轻松入门经典教程【完整版】