blocks|key|1225182|text|File+f+=+new+File("C:\\TEST");
try{
++++if(f.mkdir())+{+
++++++++System.out.println("Directory+Created");
++++}+else+{
++++++++System.out.println("Directory+is+not+created");
++++}
}+catch(Exception+e){
++++e.printStackTrace();
}+|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1225183|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>File f = new File("C:\\TEST");
try{
 if(f.mkdir()) { 
 System.out.println("Directory Created");
 } else {
 System.out.println("Directory is not created");
 }
} catch(Exception e){
 e.printStackTrace();
} 
</code></pre>

blocks|key|1010573|text|调用File.mkdir，如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1010574|new+File(path).mkdir();|code-block|syntax|javascript|1010575|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/j2se/1.4.2/docs/api/java/io/File.html#mkdir%2528%2529^0|2|A|2|A|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

Call <a href="http://java.sun.com/j2se/1.4.2/docs/api/java/io/File.html#mkdir%28%29" rel="noreferrer"><code>File.mkdir</code></a>, like this:

<pre><code>new File(path).mkdir();
</code></pre>

blocks|key|1010752|text|在Java7和更新版本中，您可以将java.nio.file.Files类的静态Files.createDirectory()方法与Paths.get一起使用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1010753|Files.createDirectory(Paths.get("/path/to/folder"));|code-block|syntax|javascript|1010754|如果父目录不存在，方法Files.createDirectories()还会创建父目录。|1010755|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.oracle.com/javase/8/docs/api/java/nio/file/Files.html|1|http://docs.oracle.com/javase/8/docs/api/java/nio/file/Files.html#createDirectory%2528java.nio.file.Path,%2520java.nio.file.attribute.FileAttribute...%2529|2|http://docs.oracle.com/javase/8/docs/api/java/nio/file/Paths.html#get-java.net.URI-|3|http://docs.oracle.com/javase/8/docs/api/java/nio/file/Files.html#createDirectories%2528java.nio.file.Path,%2520java.nio.file.attribute.FileAttribute...%2529^0|H|J|1U|9|H|J|0|14|N|1|1U|9|2|0|0|B|P|3|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]|$9|18|A|19|1|1A]|$9|1B|A|1C|1|1D]]|E|$]]|$1|F|3|G|5|H|7|1E|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1F|8|@]|D|@$9|1G|A|1H|1|1I]]|E|$]]|$1|M|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]|U|$5|P|Q|R|E|$S|V]]|W|$5|P|Q|R|E|$S|X]]|Y|$5|P|Q|R|E|$S|Z]]]]

With Java 7 and newer you can use the static <a href="http://docs.oracle.com/javase/8/docs/api/java/nio/file/Files.html#createDirectory%28java.nio.file.Path,%20java.nio.file.attribute.FileAttribute...%29" rel="noreferrer">Files.createDirectory()</a> method of the <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/file/Files.html" rel="noreferrer"><code>java.nio.file.Files</code></a> class along with <a href="http://docs.oracle.com/javase/8/docs/api/java/nio/file/Paths.html#get-java.net.URI-" rel="noreferrer"><code>Paths.get</code></a>.

<pre><code>Files.createDirectory(Paths.get("/path/to/folder"));
</code></pre>

The method <a href="http://docs.oracle.com/javase/8/docs/api/java/nio/file/Files.html#createDirectories%28java.nio.file.Path,%20java.nio.file.attribute.FileAttribute...%29" rel="noreferrer">Files.createDirectories()</a> also creates parent directories if these do not exist.

blocks|key|1225068|text|使用mkdir()|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1225069|new+File('/path/to/folder').mkdir();|code-block|syntax|javascript|1225070|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/javase/6/docs/api/java/io/File.html#mkdir())^0|2|7|2|7|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

Use <a href="http://java.sun.com/javase/6/docs/api/java/io/File.html#mkdir()" rel="noreferrer"><code>mkdir()</code></a>:

<pre><code>new File('/path/to/folder').mkdir();
</code></pre>

blocks|key|1225144|text|在File类上使用mkdir方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1225145|https://docs.oracle.com/javase/1.5.0/docs/api/java/io/File.html#mkdir%2528%2529|offset|length|1225146|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.oracle.com/javase/1.5.0/docs/api/java/io/File.html#mkdir%2528%2529^0|0|0|23|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

Use the mkdir method on the File class:

<a href="https://docs.oracle.com/javase/1.5.0/docs/api/java/io/File.html#mkdir%28%29" rel="nofollow noreferrer">https://docs.oracle.com/javase/1.5.0/docs/api/java/io/File.html#mkdir%28%29</a>

blocks|key|1010975|text|使用Java+8：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1010976|Files.createDirectories(Paths.get("/path/to/folder"));|code-block|syntax|javascript|1010977|相同的：|1010978|new+File("/path/to/folder").mkdirs();|1010979|或|1010980|Files.createDirectory(Paths.get("/path/to/folder"));|1010981|1010982|new+File("/path/to/folder").mkdir();|1010983|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|V|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|W|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|X|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|O|3|H|5|6|7|Z|8|@]|9|@]|A|$]]|$1|P|3|Q|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|R|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|S|$]]

Using Java 8:

<pre><code>Files.createDirectories(Paths.get("/path/to/folder"));
</code></pre>

Same:

<pre><code>new File("/path/to/folder").mkdirs();
</code></pre>

Or

<pre><code>Files.createDirectory(Paths.get("/path/to/folder"));
</code></pre>

Same:

<pre><code>new File("/path/to/folder").mkdir();
</code></pre>

blocks|key|1010836|text|更好地使用mkdirs作为：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1010837|new+File("dirPath/").mkdirs();|code-block|syntax|javascript|1010838|mkdirs：如果父目录不存在，也要创建父目录。|1010839|ps:不要忘记结尾的/，它显式地表明您想要创建一个目录。|1010840|entityMap^0|5|6|0|0|0|6|0|A|1|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

Better to use <code>mkdirs</code> as: 

<pre><code>new File("dirPath/").mkdirs();
</code></pre>

<code>mkdirs</code>: also create parent directories if these do not exist. 

ps: don't forget the ending <code>/</code> that shows explicitly you want to make a directory.

blocks|key|1011008|text|以下代码对创建单个或多个目录很有帮助：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1011009|import+java.io.File;

public+class+CreateSingleOrMultipleDirectory{
++++public+static+void+main(String[]+args)+{
//To+create+single+directory
++++++++File+file+=+new+File("D:\\Test");
++++++++if+(!file.exists())+{
++++++++++++if+(file.mkdir())+{
++++++++++++++++System.out.println("Folder/Directory+is+created+successfully");
++++++++++++}+else+{
++++++++++++++++System.out.println("Directory/Folder+creation+failed!!!");
++++++++++++}
++++++++}
//To+create+multiple+directories
++++++++File+files+=+new+File("D:\\Test1\\Test2\\Test3");
++++++++if+(!files.exists())+{
++++++++++++if+(files.mkdirs())+{
++++++++++++++++System.out.println("Multiple+directories+are+created+successfully");
++++++++++++}+else+{
++++++++++++++++System.out.println("Failed+to+create+multiple+directories!!!");
++++++++++++}
++++++++}
++++}
}|code-block|syntax|javascript|1011010|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The following code would be helpful for the creation of single or multiple directories:

<pre><code>import java.io.File;

public class CreateSingleOrMultipleDirectory{
 public static void main(String[] args) {
//To create single directory
 File file = new File("D:\\Test");
 if (!file.exists()) {
 if (file.mkdir()) {
 System.out.println("Folder/Directory is created successfully");
 } else {
 System.out.println("Directory/Folder creation failed!!!");
 }
 }
//To create multiple directories
 File files = new File("D:\\Test1\\Test2\\Test3");
 if (!files.exists()) {
 if (files.mkdirs()) {
 System.out.println("Multiple directories are created successfully");
 } else {
 System.out.println("Failed to create multiple directories!!!");
 }
 }
 }
}
</code></pre>

How can I create an empty folder in Java?

问如何在Java中创建文件夹？
EN

回答 8

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