Java File类静态文件createTempFile（String file_name，String file_extension）方法，带有示例...

拼搏现实的明天。 2023-03-05 06:27 11阅读 0赞

## File类静态文件createTempFile(String file\_name，String file\_extension) **(**File Class static File createTempFile(String file\_name, String file\_extension)**)** ##

*  This method is available in package java.io.File.createTempFile(String file\_name , String file\_extension).
    
    软件包java.io.File.createTempFile(String file\_name，String file\_extension)中提供了此方法。
 *  This method is used to create a temporary file in a specified directory and if the directory is not given then default directory will get selected.
    
    此方法用于在指定目录中创建一个临时文件，如果未提供该目录，则将选择默认目录。
 *  This method is static so it will be accessible with classname.
    
    该方法是静态的，因此可以使用类名进行访问。

**Syntax:**

**句法：**

static File createTempFile(String file_name , String file_extension){
        }

**Parameter(s):**

**参数：**

We pass two objects as a parameter in the method of the File i.e file\_name and file\_extension. So the first argument is filename and the second argument is file extension so if the file extension is null then it takes default extension is **'.tmp'**.

我们在File方法中传递两个对象作为参数，即file\_name和file\_extension。 因此，第一个参数是filename，第二个参数是文件扩展名，因此，如果文件扩展名为null，则默认扩展名为**'.tmp'** 。

**Return value:**

**返回值：**

The return type of this method is File. So, it returns a temporary file.

该方法的返回类型为File 。 因此，它返回一个临时文件。

### Java程序，演示createTempFile()方法的示例 **(**Java program to demonstrate example of createTempFile() method**)** ###

// import the File class because we will use File class methods
    import java.io.File;
    
    // import the Exception class because it may raise an 
    // exception when working with files
    import java.lang.Exception;
    
    public class CreateTempFile {
        
        public static void main(String[] args) {
        
            try {
        
                // Specify the path of file and we use double slashes to 
                // escape '\' character sequence for windows otherwise 
                // it will be considerable as url.
    
                // create a temporary file object 
                File file = File.createTempFile("Java", ".txt");
    
                // check whether file exists or not
                if (file.exists()) {
        
                    // Temporary file will create in current directory with named 
                    // Java and extension is .txt so the filename will be Java.txt
                    System.out.println("Temp File created: " + file.getName());
                } else {
        
                    // if the file is not created
                    System.out.println("Temp File cannot be created: " + file.getName());
                }
            } catch (Exception e) {
        
                System.out.println("An error occurred.");
                e.printStackTrace();
            }
        }
    }

**Output**

**输出量**

E:\Programs>javac CreateTempFile.java
    
    E:\Programs>java CreateTempFile
    Temp File created: Java5580937140195842517.txt

> 翻译自: [https://www.includehelp.com/java/file-class-static-file-createtempfile-string-file\_name-string-file\_extension-method-with-example.aspx][https_www.includehelp.com_java_file-class-static-file-createtempfile-string-file_name-string-file_extension-method-with-example.aspx]

[https_www.includehelp.com_java_file-class-static-file-createtempfile-string-file_name-string-file_extension-method-with-example.aspx]: https://www.includehelp.com/java/file-class-static-file-createtempfile-string-file_name-string-file_extension-method-with-example.aspx