Cannot make a static reference to the non-static method fxn(int) from the type Two [duplicate]

Question

Possible Duplicate:
What is the reason behind “non-static method cannot be referenced from a static context”?
Cannot make a static reference to the non-static method
cannot make a static reference to the non-static field

I am not able to understand what is wrong with my code.

class Two {     public static void main(String[] args) {         int x = 0;          System.out.println("x = " + x);         x = fxn(x);         System.out.println("x = " + x);     }      int fxn(int y) {         y = 5;         return y;     } } 

Exception in thread "main" java.lang.Error: Unresolved compilation problem: Cannot make a static reference to the non-static method fxn(int) from the type Two

Answer 1

Since the main method is static and the fxn() method is not, you can't call the method without first creating a Two object. So either you change the method to:

public static int fxn(int y) {     y = 5;     return y; } 

or change the code in main to:

Two two = new Two(); x = two.fxn(x); 

Read more on static here in the Java Tutorials.