import java.util.Scanner; //调用java.util.Scanner
public class Test
{
public static void main (String[] args)
{
Scanner keyboardInput = new Scanner(System.in); //从类Sca
{ //创建带通配符的文件名过滤器对象
FilenameFilter filter = new DirFilter("w*abc.txt");
File f1 = new File("");
File curdir = new File(f1.getAbsolutePath(),""); //当前目录
System.out.println(curdir.getAbsolutePat
一、输入数字代码：import java.util.Scanner;
public class Demo {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("输入整数：");
int su
