1，使用指定的碼表讀寫(xiě)字符

FileReader是使用默認(rèn)碼表讀取文件, 如果需要使用指定碼表讀取, 那么可以使用InputStreamReader(字節(jié)流,編碼表)

FileWriter是使用默認(rèn)碼表寫(xiě)出文件, 如果需要使用指定碼表寫(xiě)出, 那么可以使用OutputStreamWriter(字節(jié)流,編碼表)

【1】?代碼分析

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.UnsupportedEncodingException;

public class Demo7_TransIO {

/**

* @param args

* @throws IOException

*/

public static void main(String[] args) throws IOException {

//demo1();

//demo2();

BufferedReader br =?????????????????????????????????//更高效的讀

new BufferedReader(new InputStreamReader(new FileInputStream("utf-8.txt"), "utf-8"));

BufferedWriter bw =?????????????????????????????????//更高效的寫(xiě)

new BufferedWriter(new OutputStreamWriter(new FileOutputStream("gbk.txt"), "gbk"));

int c;

while((c = br.read()) != -1) {

bw.write(c);

}

br.close();

bw.close();

}

public static void demo2() throws UnsupportedEncodingException,

FileNotFoundException, IOException {

InputStreamReader isr = new InputStreamReader(new FileInputStream("utf-8.txt"), "uTf-8");????//指定碼表讀字符

OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("gbk.txt"), "gbk");????//指定碼表寫(xiě)字符

int c;

while((c = isr.read()) != -1) {

osw.write(c);

}

isr.close();

osw.close();

}

public static void demo1() throws FileNotFoundException, IOException {

//用默認(rèn)編碼表讀寫(xiě),出現(xiàn)亂碼

FileReader fr = new FileReader("utf-8.txt");

FileWriter fw = new FileWriter("gbk.txt");

int c;

while((c = fr.read()) != -1) {

fw.write(c);

}

fr.close();

fw.close();

}

}

2，轉(zhuǎn)換流圖解

畫(huà)圖分析轉(zhuǎn)換流

標(biāo)簽：字符,java,import,讀寫(xiě),io,new,close,JAVA,碼表

來(lái)源： https://blog.csdn.net/Cricket_7/article/details/95076775

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