java新建一个文件夹和文件 thanks

[zgycsmb]

我想在d盘根目录下，新建一个文件夹 demosun 再在此文件夹下新建一个demosu.txt文件

这如何用代码实现呀 thanks

[sffx123]

我擦来晚了

[五哥]

File file = new File("D:\\demosun");
if (!file.exists()){
file.mkdirs() ;
}

[古布]

File f = new File("D:/demosun");
f.mkdirs();
FileWriter fw = new FileWriter("D:/demosun/demosu.txt");
fw.close();

[古布]

File f = new File("D:/demosun");
f.mkdirs();
FileWriter fw = new FileWriter("D:/demosun/demosu.txt");
fw.close();

[五哥]

File file = new File("D:\\demosun");
if (!file.exists()){
  file.mkdirs() ;
}
file = new File("D:\\demosun\\demosu.txt") ;
if (!file.exists()){
  bool b = file.createNewFile();
if (b){
  System.out.println("创建成功。") ;
}
}

[_jerrytiger]

public static void main(String[] args) throws IOException {
		File file = new File("d:/demosun/demosu.txt");
		if(!file.getParentFile().exists())
			file.getParentFile().mkdirs();
		if(!file.exists())
			file.createNewFile();
	}

[ningtieming]

package test;

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

public class Test {
	public static void main(String []args){
		File directory = new File("D:\\demosun");
		if(!directory.exists()){
			directory.mkdirs();
		}
		File file = new File("D:\\demosun\\demosu.txt");
		try{
			if(!file.exists()){
				file.createNewFile();
			}
		}
		catch(IOException e){
			e.printStackTrace();
		}
		if(file.exists()){
			System.out.println("文件夹及文件创建成功");
		}
	}
}

[a395885670]

File file = new File("D:\\demosun");
if (!file.exists()){
file.mkdirs() ;
}
file = new File("D:\\demosun\\demosu.txt") ;
if (!file.exists()){
bool b = file.createNewFile();
if (b){
System.out.println("创建成功。") ;
}
}