Java中使用Files类的copy()方法实现复制文件

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class FileCopyExample {
    public static void main(String[] args) {
        // 源文件路径
        String sourceFilePath = "path/to/source/file.txt";
        // 目标文件路径
        String targetFilePath = "path/to/target/file.txt";

        Path sourcePath = Paths.get(sourceFilePath);
        Path targetPath = Paths.get(targetFilePath);

        try {
            // 复制文件
            Files.copy(sourcePath, targetPath);
            System.out.println("文件复制成功");
        } catch (IOException e) {
            System.err.println("文件复制失败: " + e.getMessage());
        }
    }
}    

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;

public class FileCopyWithReplace {
    public static void main(String[] args) {
        String sourceFilePath = "path/to/source/file.txt";
        String targetFilePath = "path/to/target/file.txt";

        Path sourcePath = Paths.get(sourceFilePath);
        Path targetPath = Paths.get(targetFilePath);

        try {
            Files.copy(sourcePath, targetPath, StandardCopyOption.REPLACE_EXISTING);
            System.out.println("文件复制成功（覆盖已存在文件）");
        } catch (IOException e) {
            System.err.println("文件复制失败: " + e.getMessage());
        }
    }
}