The Three Methods Every Object Already Has

You print an object to check a value and get Order@6d06d69c. You compare two objects you know hold the same data and get false. Neither class declares a single method that would explain it.

Every class in Java extends Object, whether or not anybody wrote it down, and Object supplies three methods that your class inherits with default behaviour.

The three inherited methods and what each one does if you write nothing
Method	Default behaviour	What that means
`equals(Object)`	`this == other`	Equal means the very same object, never the same contents
`hashCode()`	A number derived per object	Two objects with identical fields get different numbers
`toString()`	Class name, `@`, hash in hexadecimal	`Order@6d06d69c`

java

Order a = new Order("AB-1", 10);
Order b = new Order("AB-1", 10);

System.out.println(a);
System.out.println(a.equals(b));

text

Order@6d06d69c
false

The defaults are not wrong. They are the only answers a class called Object could give, because it has no idea which of your fields decide identity.

So the three are yours to write, and the decision to leave them alone is a decision too: it says that two of these objects are never equal, however identical their contents.