Java 文件操作

import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class FileTest {
    public static void main(String[] args) throws IOException {
        File file = new File("test.txt");
        if (!file.exists()) {
            System.out.println("正在创建");
            try {
                file.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
            System.out.println("文件创建成功");
        }
        else {
            System.out.println("找到文件名为test的文本文件");
            if(file.isFile() && file.canRead())
            {
                System.out.println("正在读取文件信息");
            }
            System.out.println(file.getName());
            System.out.println(file.getAbsolutePath());
            System.out.println(file.isHidden());
            System.out.println(file.length());
            long temptime = file.lastModified();
            Date date = new Date();
            DateFormat df = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
            System.out.println(df.format(temptime));
//            System.out.println(temptime);
            
        }
    }
}