Java-尝试显示文件夹中文件的最后修改日期

Question

My problem is that when I try lastModified function on files I get an error - method 'lastModified' not found . It only allows me to use the lastModified function on folders, and I'm unsure how to fix this. This is what I have so far:

public static void main(String[] args) {

    String path = "C:/Desktop/ExampleFolder";

    String files;
    File folder = new File(path);
    File[] listOfFiles = folder.listFiles();

    for (int i = 0; i < listOfFiles.length; i++) {
        if (listOfFiles[i].isFile())            
        {
            files = listOfFiles[i].getName();
            SimpleDateFormat sdf = new SimpleDateFormat("MM-dd-yy HH:mm: a");

            if (files.endsWith(".txt") || files.endsWith(".csv") || files.endsWith(".docx")) {
                System.out.println("File Name: " + files + " , " + "Size: " + files.length() + " bytes " + " , " + "Last Modified : " + sdf.format(files.lastModified())  );
            }

        }

    }

}

Answer 1

In your code you wrote files.lastModified() where files is a String .

Don't you mean following instead ?

listOfFiles[i].lastModified()