class inside class in java code example

Example 1: can we create a class inside a class in java

Yes you can

class OuterClass {
   class InnerClass {
   }
}

Example 2: java use method in another class

class A { 
  
    public void a1 ( ) { 
    } 
 
    private void a2 ( ) { 
    } 
} 
 
class B { 
 
    private A objA = new A ( ); 
 
    public void b1 ( ) { 
        // Call to method a1. This works. 
        objA.a1 (); 
    } 
 
    void b2 ( ) { 
        // Call to method a2. This will give compile error. 
        objA.a2 (); 
    } 
}

Example 3: 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.