java inner class code example

Example 1: inner class vs outer class

1. Can Outer class be static? --> No
2. Can inner class be static? --> Yes
3. Can you create an object from the inner class? --> Only if it's static
4. Can we have main method in inner class ? --> Only if it's static
5. Inner class can only be extended if it's static.

Example 2: what is inner class in java

1. Can Outer class be static? --> No
	2. Can inner class be static? --> Yes
	3. Can you create an object from the inner class? --> Only if it's static
	4. Can we have main method in inner class ? --> Only if it's static
	5. Inner class can only be extended if it's static.

Example 3: use of nested class in java

In Java, it is possible to define a class within another class, such 
classes are known as nested classes. They enable you to logically group 
classes that are only used in one place, thus this increases the use of 
encapsulation, and creates more readable and maintainable code.

Example 4: inner class baeldung

public class Enclosing {
     
    private static int x = 1;
     
    public static class StaticNested {
 
        private void run() {
            // method implementation
        }
    }
     
    @Test
    public void test() {
        Enclosing.StaticNested nested = new Enclosing.StaticNested();
        nested.run();
    }
}

Example 5: are inner classes inherited

//Only fields and methods are inherited. 
//Inner class can extend it's outer class. 
//... Because, even the private members of outer 
//class are available inside the inner class. 
//Even though, When an inner class extends its outer class, 
//only fields and methods are inherited but not inner class 
//itself.