Why is this equality to another object check in String.java? -


in string.java, code @ beginning of .equals() method:

public boolean equals(object anobject) {     if (this == anobject) {         return true;     }     // ... check if instance of string, etc. }

is check purely performance reasons (i.e. not including check characters of this against itself)?

yes, is. since references same object, it's they're equal.

string = "foobar"; a.equals(a) // true

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