'why cant we access the method2-interface [duplicate]

Why cant we access the method2? I mean d is instance of A or am i wrong?

public class MainPage {
        public static void main(String[] args) {
                
            interfaceExample d=new A();
            d.method1();
            //d.method2(); this is not accessible why?
    
                
        }
            
    }
    
    interface interfaceExample{
        void method1();
    }
    class A implements interfaceExample{
    
        @Override
        public void method1() {
            // TODO Auto-generated method stub
            
        }
        public void method2() {
            // TODO Auto-generated method stub
            
        }
        
    }
javainterface


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