With this example we are going to demonstrate how to create a temporary file. We are using the File class that is an abstract representation of file and directory pathnames. In short, to create a temporary file you should:
- Create a new File instance by converting the given pathname string into an abstract pathname.
- Use
createTempFile(String prefix, String suffix)API method of File. This method creates an empty file in the default temporary-file directory, using the given prefix and suffix to generate its name. Since the suffix is set tonullthe suffix".tmp"will be used.
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import java.io.File;
import java.io.IOException;
public class CreateTemporaryFile {
public static void main(String[] args) {
File file1 = null;
File file2 = null;
try {
file1 = File.createTempFile("tmp_file", null);
System.out.println("Temporary file created: " + file1.getPath());
}
catch (IOException ioe) {
System.out.println("Exception while creating temporary file : " + ioe);
}
try {
file2 = File.createTempFile("tmp_file", ".tmp");
System.out.println("Temporary file created: " + file2.getPath());
}
catch (IOException ioe) {
System.out.println("Exception while creating temporary file : " + ioe);
}
}
}
Output:
Temporary file created: C:UserslocaluserAppDataLocalTemptmp_file20310.tmp
Temporary file created: C:UserslocaluserAppDataLocalTemptmp_file20311.tmp
This was an example of how to create a temporary file in Java.
