import java.io.File;

public class demol20 {
    public static void main(String[] args) {
        File s = new File("D:\\Javawork\\out");
        delect(s);
    }

    public static void delect(File s){
        File[] s1 = s.listFiles();
        for (File file : s1) {
            //如果是文件就直接删除
            if(file.isFile()){
                file.delete();
            }else {
                delect(file);
            }
        }
        s.delete();
    }
}

import java.io.*;
import java.util.Arrays;

public class demol22 {
    public static void main(String[] args) throws IOException {
        //建立读取字符流
        FileReader s1=new FileReader("D:\\Javawork\\number.txt");
        int a;
        //建立集合接受数据
        StringBuilder s2=new StringBuilder();
        while ((a= s1.read())!=-1){
          s2.append((char) a);
        }
        s1.close();
        //将集合转成字符串
        Integer[]arr= Arrays.stream(s2.toString().split("-")).map(Integer::parseInt).toArray(Integer[]::new);
        //进行排序
        int max=0;
        for (int i = 0; i < arr.length-1; i++) {
            if(arr[i]>arr[i+1]){
                max=arr[i+1];
                arr[i+1]=arr[i];
                arr[i]=max;
            }
        }
        String s3=Arrays.toString(arr).replace(", ","-");
        String s4=s3.substring(1,s3.length()-1);
        //建立写入源
        FileWriter s5=new FileWriter("D:\\Javawork\\number.txt");
        s5.write(s4);
        s5.close();
    }
}

import java.io.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

public class demol23 {
    public static void main(String[] args) throws IOException {
        //对文件进行解压
        File s=new File("D:\\Javawork\\ddd.zip");
        File s1=new File("D:\\Javawork");
        unzip(s,s1);
    }
    //定义解压方法
    public static void unzip(File s,File s1) throws IOException {
        ZipInputStream s3=new ZipInputStream(new FileInputStream(s));
        ZipEntry entry ;
        while ((entry=s3.getNextEntry())!=null){
            if(entry.isDirectory()){
                File s4=new File(s1,entry.toString());
                s4.mkdirs();
            }else {
                FileOutputStream s4=new FileOutputStream(new File(s1,entry.toString()));
                int d;
                while ((d= s3.read())!=-1){
                    s4.write(d);
                }
                s4.close();
                s3.closeEntry();
            }
        }
    }
   
}

package Day2.text1;

import java.io.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class demol25 {
    public static void main(String[] args) throws IOException {
        //数据源
        File s0=new File("D:\\Javawork\\ddd\\aaa");
        //存放位置
        File s1=s0.getParentFile();
        File s2=new File(s1,s0.getName()+".zip");
        System.out.println(s2);
        ZipOutputStream s3=new ZipOutputStream(new FileOutputStream(s2));
        //创建递归
        tozip(s0,s3, s0.getName());
        //关闭
        s3.close();
    }

    public static void tozip(File s0,ZipOutputStream s3,String name) throws IOException {
        File[] s4 = s0.listFiles();
        for (File s5 : s4) {
            if(s5.isFile()){
                ZipEntry s6=new ZipEntry(name+"\\"+s5.getName());
                s3.putNextEntry(s6);
                FileInputStream s7=new FileInputStream(s5);
                int s;
                while ((s=s7.read())!=-1){
                    s3.write(s);
                }
                s7.close();
                s3.closeEntry();
            }else {
                tozip(s5,s3,name+"\\"+s5.getName());
            }
        }
    }
}