字符流的拷贝

字符流的拷贝

FileReader fr = new FileReader("a.txt");
FileWriter fw = new FileWriter("b.txt");

int ch;
while((ch = fr.read()) != -1) {
	fw.write(ch);
}

fr.close();
fw.close();

package com.heima.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 Demo03_Copy {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		FileReader fr = new FileReader("xxx.txt");
		FileWriter fw = new FileWriter("zzz.txt");
		int c;
		while((c = fr.read()) != -1) {
			fw.write(c);
		}
		
		fr.close();
		//Writer类中有一个2k的小缓冲区,如果不关流,就会将内容写到缓冲区里
		//关流会将缓冲区内容刷新出来,再关闭
		fw.close();
	}
}