java创建文件的三种方式

package file;

import org.junit.jupiter.api.Test;

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



public class FileCreate {
    public static void main(String[] args) {
        new FileCreate().create01();
        new FileCreate().create02();
        new FileCreate().create03();
    }
    //方法一 new File(String pathname)//根据路径构建一个File对象
    public void create01(){
        String filePath = "e:\A.txt";
        File file = new File(filePath);
        try {
            file.createNewFile();
            System.out.println("文件创建成功");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    //方式2 new File(File parent,String child) //根据父目录文件+子路径构建
    @Test
    public void create02(){
        File parentFile = new File("e:\");
        String fileName = "B.txt";
        File file1 = new File(parentFile, fileName);
        try {
            file1.createNewFile();
            System.out.println("文件创建成功");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    //方式3 new File(String parent,String child) //根据父目录和子目录构建
    public void create03(){
        String parentFile = "E:\";
        String fileName = "C.txt";
        File file = new File(parentFile,fileName);
        try {
            file.createNewFile();
            System.out.println("文件创建成功");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}