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About Byron Kiourtzoglou

Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.

You cannot have static variables declared inside a method

In this example we shall show you the reason why you cannot have static variables declared inside a method. The steps of the example are described below:

  • We have a class, StaticVar that consists of a process() method, where it sets a static int variable and prints it.
  • We make a new instance of the StaticVar in a main() method and call its process() method.
  • A java.lang.Error occurs, and the unresolved compilation problem is that the static modifier is not permitted,

as described in the code snippet below.  

package futuretest;

public class StaticVar {
    
  public static void main(String[] argv) {
    StaticVar t = new StaticVar();
    t.process();
  }
  
  void process() {
    static int a = 42;
// EXPECT COMPILE ERROR
    System.out.println("Process: " + a);
  }
}

  
This was an example of explaining why you cannot have static variables declared inside a method in Java.

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