采用文件字符输入流和文件字符输出流把 Dwordatxt 复制到 Ewordatxt 分别采用一次读取一个字符的方式和一次读取一个字符数组的方式 用java做

import java.io.*;

public class FileCopy { public static void main(String[] args) { String sourcePath = "D:\word\a.txt"; String targetPath = "E:\word\a.txt";

    // 一次读取一个字符
    try (FileReader reader = new FileReader(sourcePath);
         FileWriter writer = new FileWriter(targetPath)) {
        int ch;
        while ((ch = reader.read()) != -1) {
            writer.write(ch);
        }
        System.out.println("一次读取一个字符的方式复制完成！");
    } catch (IOException e) {
        e.printStackTrace();
    }

    // 一次读取一个字符数组
    try (FileReader reader = new FileReader(sourcePath);
         FileWriter writer = new FileWriter(targetPath)) {
        char[] buffer = new char[1024];
        int len;
        while ((len = reader.read(buffer)) != -1) {
            writer.write(buffer, 0, len);
        }
        System.out.println("一次读取一个字符数组的方式复制完成！");
    } catch (IOException e) {
        e.printStackTrace();
    }
}