superclass - Java getClass and super classes -

public boolean equals(object o) {     if (this == o)         return true;     if ((o == null) || (this.getclass() != o.getclass()))         return false;     else {         alunote umaluno = (alunote) o;         return(this.nomeempresa.equals(umaluno.getnomeempresa()) && super.equals(umaluno);     } } 

could explain me how fourth line ((this.getclass() != o.getclass())) works when argument super class? because classes have different names. this.getclass return different name o.getclass, right?

check following code snippet answers question. object o can hold object. o.getclass() return run time class of object

public class main {   void method(object o) {     system.out.println(this.getclass() == o.getclass());   }    public static void main(string[] args) {     new main().method(new object());  // false     new main().method(new main());    // true     new main().method(new string());  // false     new main().method(new mainone()); // false   } }  class mainone extends main { }