Can someone dumb down A.equal(B) for me?

6. Determine the output of the following Java program. This program consists of two files Blah.java and BlahTest.java defining the classes Blah and BlahTest respectively // Blah.java class Blahl private int foo; private double bar; Blah (int f, double b) ( bar -b; Blah (int a, int b)( foo-a+b bar = 0.0; int getFoo () return foo; void setBar (double x) ( bar-x; void mult) bar *= foo; public String toString)( return "("+foo+", "+bar+")" public boolean equals (Object x) f boolean eq = false; Blah B; if( x instanceof Blah B = eg (Blah ) x; (foo=-B. foo && bar=-B . bar) ; return eq; // BlahTest.java class BlahTest public static void main (String[] args) f Blah A = new Blah ( 15, 3.0); Blah B = new Blah (7, 8); System.out.println (A) System.out.println (B); A.mult B.setBar (45.0); System.out.println (A.equals (B))