Java:文件操作

import java.io.File;
import java.io.IOException;

public class Driver {
    public static void main(String[] args) throws IOException {

        String pathSeparator = File.pathSeparator;
        System.out.println(pathSeparator);//路径分隔符
        String separator = File.separator;
        System.out.println(separator); //文件分隔符

        show01();

        show02("d:\\","Driver.java");
    
        show03();

        show04();// 获取功能

        show05();//判断功能

        show06();//遍历

        show07();//删除功能操作
    }

    private static void show07() throws IOException {

        File file=new File("C:\\wanson\\demo1"); //一级文件夹
        System.out.println(file.mkdir());

       /* File file1=new File("C:\\wanson\\aa\\bb\\cc");
        System.out.println(file1.mkdirs());*/ // 创建多级文件夹

       /* File file2=new File("C:\\wanson\\hello.txt");

        System.out.println(file2.createNewFile());*/

        File file3=new File("C:\\wanson\\demo1");
        System.out.println(file3.delete());




    }

    private static void show06() {
        File file=new File("D:\\UPUPW_ANK_W64");
        //遍历方法1
//        File file=new File("D:\\UPUPW_ANK_W641");
//        File file=new File("D:\\UPUPW_ANK_W64\\UPUPW.exe");
        String[] name=file.list();
        System.out.println("*****************************************");
        for (String s : name) {
            System.out.println(s);
        }
        //遍历方法2
        System.out.println("*****************************************");
        File[]files=file.listFiles();
        for (File file1 : files) {
            System.out.println(file1);
        }

    }

    private static void show05() {
        //判断功能
        File file = new File("D:\\java_project\\HandleFile\\src\\Driver.java");
        File file1 = new File("f:\\java_project\\HandleFile\\src\\Driver.java");
        System.out.println(file.exists());
        System.out.println(file1.exists());

        System.out.println(file.isFile());//判断是否是文件
        System.out.println(file1.isFile());

        System.out.println(file.isDirectory());
        System.out.println(file1.isDirectory());

    }

    private static void show04() {
        // 获取功能操作
        File file=new File("D:\\java_project\\HandleFile\\src\\Driver.java");
        File file1=new File("\\src\\Driver.java");
        System.out.println(file.getAbsolutePath());
        System.out.println(file1);
        System.out.println(file.getPath());
        System.out.println(file1.getPath());

        System.out.println(file.getName());
        System.out.println(file1.getName());

        System.out.println(file.length()); //文件大小  有大小  单位字节
        System.out.println(file1.length());//文件夹大小  没有大小

    }

    private static void show03() {
        File parent=new File("D:\\java_project\\HandleFile\\src\\");
        File file=new File(parent.getName(),"Driver.java");
        System.out.println(file);
    }

    private static void show02(String parent,String child) {
        File file=new File(parent,child);
        System.out.println(file);
    }

    private static void show01(){
        File file01=new File("D:\\java_project\\HandleFile");
        System.out.println(file01);

        File file02=new File("D:\\java_project\\HandleFile\\src\\Driver.java");
        System.out.println(file02);

        File file03=new File("Driver.java");
        System.out.println(file03);

    }
}