Java 文件复制：一次读取一个字符和一次读取一个字符数组

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();
    }
}

}