Java Static Methods.

Java Static Methods

• Static methods (class methods), like static variables, belong to the class.
  (not the object of a class)
• They can be invoked by name, through the class name, without any existing object of that class.
• Static methods have only access to other static members of the class.
• It is normal to refer to static type through the class name.
• An interface can contain static constants and methods, which can be referred to directly through the interface name.
  Here is an example:

  interface CommonData {
  
    static String[] priceCat = {"Low", "Middle", "High"};
    static int number = 23;
    static String str = "Demo sting in Java";
  }
  
  public class StaticMethods {
  
    static void listData() {
      System.out.println("Value of num=" + CommonData.number);
      System.out.println("Value of str=" + CommonData.str);
      for (String cat : CommonData.priceCat) {
        System.out.println("Category=" + cat);
      }
      System.out.println("Last Category=" + CommonData.priceCat[CommonData.priceCat.length - 1]);
    }
  
    public static void main(String args[]) {
       StaticMethods.listData();
    }
  }

  The result will bee:

  Value of num=23
  Value of str=Demo sting in Java
  Category=Low
  Category=Middle
  Category=High
  Last Category=High
  

  You can download this example here (needed tools can be found in the right menu on this page).