Question

Program 4

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

Answer 1

The question is about a Java programming error due to the misuse of the 'static' keyword inside a method. The correct approach is to either remove the static keyword from the variable 'x' inside the function or declare 'x' outside as a static field.

Step-by-step explanation:

The student has asked a question related to Java programming, specifically about a piece of code that seems to be using a static variable within a method (function). In Java, the static keyword is used to indicate that a particular member variable or method belongs to the class, rather than instances of the class. However, it is important to note that the static keyword cannot be used to declare local variables inside a method. The code provided contains an error because it attempts to declare a static local variable inside the fun() method, which is not permissible in Java. Therefore, to correct this code, the static keyword should be removed from the declaration of the x variable, or x should be declared as a static field outside the fun() method.