class Test {   public static void main(String args[]) {       System.out.println(fun());   }   static int fun() {       static int x= 0;       return ++x;   }}

The code you've written is in Java, but it contains an error. In Java, you cannot declare a variable as static inside a method. The static keyword in Java is used in the declaration of a class variable, which means it belongs to the class rather than any instance of the class.

Here's the corrected version of your code:

class Test {
    static int x= 0; // Declare static variable outside the method

    public static void main(String args[]) {
        System.out.println(fun());
    }

    static int fun() {
        return ++x; // Increment the static variable
    }
}

In this corrected version, the static variable x is declared outside the fun() method, but within the Test class. This means x is a class variable and it can be accessed and modified by the fun() method. The fun() method increments x by 1 each time it is called and then returns the new value of x. The main() method calls fun() and prints the returned value.