BufferedReader构造函数简单来讲就做了几件事:1)基于方法入参,指定底层字符输出流;2)创建指定或默认大小的字符缓冲区;3)初始化成员变量nextChar(下一次字符读取位置),nChars(当前缓冲区字符个数) 2 - int read()方法 - 读取单个字符 /** * 读取单个字符,当到达流末尾的时候返回-1 */ public int read() t...
与下面的BufferedReader结合使用实现字符类型的文件的拷贝。 二:BufferedReader 1、类功能简介: 缓冲字符输入流、他的功能是为传入的底层字符输入流提供缓冲功能、他会通过底层字符输入流(in)中的字符读取到自己的buffer中(内置缓存字符数组)、然后程序调用BufferedReader的read方法将buffer中的字符读取到程序中、当buffer...
MyBufferedReader myReader =newMyBufferedReader("MyBufferedReaderDemo.java"); String line =null; while((line=myReader.readLine())!=null) { System.out.println(line); } myReader.close(); } } classMyBufferedReader { privateFileReader fileReader =null; publicMyBufferedReader(String fileName)throws...
import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; public class Demon03 { public static void main(String[] args) { try (BufferedReader br = new BufferedReader(new FileReader("module3\\4.txt"))){ String line = null; while ((line = br.readLine())!=nu...
主要通过BufferedReader的readLine()方法按行读取字符串,如下代码所以 读取完毕后记得关闭文件流,最好统一放在finally中关闭 public void readLine(String path) { InputStreamReader isr = null; BufferedReader br = null; try { isr = new InputStreamReader(new FileInputStream(path)); ...
read(char[] cbuf, int off, int len) 将字符读入数组的某一部分。 int InputStreamReader.read(char[] cbuf, int offset, int length) 将字符读入数组中的某一部分。 int BufferedReader.read(char[] cbuf, int off, int len) 将字符读入数组的某一部分。 abstract int Reader.read(char[] cbuf,...
BufferedReader in = new BufferedReader(new FileReader("foo.in")); will buffer the input from the specified file. Without buffering, each invocation of read() or readLine() could cause bytes to be read from the file, converted into characters, and then returned, which can be very inefficient...
BufferedReader rd = new BufferedReader(new InputStreamReader(is)); StringBuilder response = new StringBuilder(); String line; while ((line = rd.readLine()) != null) { response.append(line); response.append('\n'); } rd.close(); is.close(); return response.toString(); 它正在破门而入...
BufferedReader in = new BufferedReader(new FileReader("foo.in")); will buffer the input from the specified file. Without buffering, each invocation of read() or readLine() could cause bytes to be read from the file, converted into characters, and then returned, which can be very inefficient...
Reads a line of text. A line is considered to be terminated by any one of a line feed ('\n'), a carriage return ('\r'), a carriage return followed immediately by a line feed, or by reaching the end-of-file (EOF). Java documentation forjava.io.BufferedReader.readLine(). ...