Overriding Equals Method - Cannot Invoke Equals On Primitive Type (double)

I am trying to override the equals method for my class TeamMember I have two fields:

private Details details;
private double salary;

Code for override I get an error on salary saying cannot invoke equals (double) on the primitive type (double)

Is their something I am missing/coding wrong?

Java Code:

public boolean equals(Object obj) {
//test exceptional cases
//avoid potential NullPointerException/ClassCastException
if ((obj == null) || (this.getClass() != obj.getClass()))
return false;
TeamMember other = (TeamMember) obj; //cast to a TeamMember object
// compare fields details and salary
return this.details.equals(other.details)
&& this.salary.equals(other.salary);
} mh_sh_highlight_all('java');