java中File类用法
import java.io.*;import java.util.*;public class FileTest {public static void main(String [] args) {File f = new File("1.txt");if (f.exists()) {f.delete();} else {try {f.createNewFile();} catch(IOException e) {e.printStackTrace();}}System.out.println("File name " + f.getName());System.out.println("File path " + f.getPath());System.out.println("File absolute path " + f.getAbsolutePath());System.out.println("File parent " + f.getParent());System.out.println("File last modified " + f.lastModified());System.out.println("is exist " + (f.exists() ? "exist" : "not exist"));System.out.println("can read " + (f.canRead() ? "yes" : "no"));System.out.println("is directory " + (f.isDirectory() ? "yes" : "no"));Date date = new Date(f.lastModified());System.out.println(date); // print modified date}}