Java_基础—readLine()和newLine()方法

爱被打了一巴掌 2022-05-16 08:27 150阅读 0赞

# Java\_基础—readLine()和newLine()方法 #

2017年07月25日 20:16:48

阅读数：547

package com.soar.chario;
    
    import java.io.BufferedReader;
    import java.io.BufferedWriter;
    import java.io.FileNotFoundException;
    import java.io.FileReader;
    import java.io.FileWriter;
    import java.io.IOException;
    
    public class Demo4_Buffered {
        /*
         * 带缓冲区的流中的特殊方法
         * readLine()属于BufferedReader
         * newLine()属于BufferedWriter
         * 
         * newLine 和 \r\n的区别
         * newLine是跨平台的方法
         * \r\n只支持的是windows系统
         */
        public static void main(String[] args) throws IOException {
            //readLine();
            BufferedReader br = new BufferedReader(new FileReader("zzz.txt"));
            BufferedWriter bw = new BufferedWriter(new FileWriter("aaa.txt"));
    
            String line;
            while((line = br.readLine()) != null){
                bw.write(line);
                //bw.newLine();             //写出回车换行符
                bw.write("\r\n");
            }
    
            br.close();
            bw.close();
        }
    
        private static void readLine() throws FileNotFoundException, IOException {
            BufferedReader br = new BufferedReader(new FileReader("zzz.txt"));
            String line;
    
            while((line = br.readLine()) != null){
                System.out.println(line);
            }
    
            br.close();
        }
    
    }

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