In java there is a string class method that works as seen bellow. But I wonder how is it that we are able to call the method on a random variable of type string?
String word = "hello"
word.equals("hello");
output is true
The equals() method is used to verify if the state of the instances of two Java classes is the same. Because equals() is from the Object class, every Java class inherits it. But the equals() method has to be overridden to make it work properly. Of course, String overrides equals().
Take a look:
public boolean equals(Object anObject) {
if (this == anObject) {
return true;
}
if (anObject instanceof String) {
String aString = (String)anObject;
if (coder() == aString.coder()) {
return isLatin1() ? StringLatin1.equals(value, aString.value)
: StringUTF16.equals(value, aString.value);
}
}
return false;
}
As you can see, the state of the String class value has to be equals() and not the object reference. It doesn’t matter if the object reference is different; the state of the String will be compared
I have taken it from here. Better if you have an idea about String pool also. So please refer the link
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