Java kelas statis
// Java program to Demonstrate How to
// Implement Static and Non-static Classes
// Class 1
// Helepr class
class OuterClass {
// Input string
private static String msg = "GeeksForGeeks";
// Static nested class
public static class NestedStaticClass {
// Only static members of Outer class
// is directly accessible in nested
// static class
public void printMessage()
{
// Try making 'message' a non-static
// variable, there will be compiler error
System.out.println(
"Message from nested static class: " + msg);
}
}
// Non-static nested class -
// also called Inner class
public class InnerClass {
// Both static and non-static members
// of Outer class are accessible in
// this Inner class
public void display()
{
// Print statement whenever this method is
// called
System.out.println(
"Message from non-static nested class: "
+ msg);
}
}
}
// Class 2
// Main class
class GFG {
// Main driver method
public static void main(String args[])
{
// Creating instance of nested Static class
// inside main() method
OuterClass.NestedStaticClass printer
= new OuterClass.NestedStaticClass();
// Calling non-static method of nested
// static class
printer.printMessage();
// Note: In order to create instance of Inner class
// we need an Outer class instance
// Creating Outer class instance for creating
// non-static nested class
OuterClass outer = new OuterClass();
OuterClass.InnerClass inner
= outer.new InnerClass();
// Calling non-static method of Inner class
inner.display();
// We can also combine above steps in one
// step to create instance of Inner class
OuterClass.InnerClass innerObject
= new OuterClass().new InnerClass();
// Similarly calling inner class defined method
innerObject.display();
}
}
Tame Tortoise