JAVA IO 快速入门()

package com.example.demo;

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

public class test {
    public static void main(String[]args) throws IOException {
        //第一种写法;

        String fileName = "news.txt";
        String parentPath ="d:\\";
        File file = new File(parentPath,fileName);
        try{
            file.createNewFile();
            System.out.println("创建成功");
        }catch(Exception e){
            e.printStackTrace();
        }


       //第二种写法

        File files = new File("d:\\","news1.txt");
        try {
        files.createNewFile();
        System.out.println("创建成功");
        }catch (Exception e){e.printStackTrace();}

        //第三种写法
        File filess = new File("D:\\news2.txt");
        try {
            filess.createNewFile();
            System.out.println("成功");
        }catch (Exception e){
        e.printStackTrace();
        }

    }
}
————————
package com.example.demo;

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

public class test {
    public static void main(String[]args) throws IOException {
        //第一种写法;

        String fileName = "news.txt";
        String parentPath ="d:\\";
        File file = new File(parentPath,fileName);
        try{
            file.createNewFile();
            System.out.println("创建成功");
        }catch(Exception e){
            e.printStackTrace();
        }


       //第二种写法

        File files = new File("d:\\","news1.txt");
        try {
        files.createNewFile();
        System.out.println("创建成功");
        }catch (Exception e){e.printStackTrace();}

        //第三种写法
        File filess = new File("D:\\news2.txt");
        try {
            filess.createNewFile();
            System.out.println("成功");
        }catch (Exception e){
        e.printStackTrace();
        }

    }
}