Java中Files的常用方法的代码示例

以下是Java中Files的常用方法的代码示例：

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

public class FilesExample {
    public static void main(String[] args) {
        Path source = Paths.get("C:/Temp/source.txt");
        Path target = Paths.get("C:/Temp/target.txt");

        // 拷贝文件
        try {
            Files.copy(source, target, StandardCopyOption.REPLACE_EXISTING);
        } catch (Exception e) {
            e.printStackTrace();
        }

        // 判断文件是否存在
        boolean exists = Files.exists(target);
        System.out.println("Target file exists: " + exists);

        // 获取文件大小
        try {
            long size = Files.size(target);
            System.out.println("Target file size: " + size);
        } catch (Exception e) {
            e.printStackTrace();
        }

        // 删除文件
        try {
            Files.delete(target);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}