🌙 How To Use Equals Method In Java

String class contains equals () method to compare one string to another. equals () method returns true if the strings compared are equal, otherwise false. To do the opposite just put an exclamation mark at the start of the statement, for example !str1.equals (str2) String str1 = "Java"; String str2 = "Hungry"; boolean notEqual = ! str1.equals ^{Is it possible to do something like this in Java for Android (this is a pseudo code) IF (some_string.equals("john" OR "mary" OR "peter" OR "etc."){ THEN do something } ? At the moment this is done via multiple String.equals() condition with || among them.} Java is a programming language that comprises multiple methods through which we can compare the strings in Java. These methods are String.equals(), String.equalsIgnoreCase(), Object.equals(), String.compareTo(), and String.regionMatches(). In this article, the string equals() method in Java will be demonstrated in detail.

In Java, the == operator compares that two references are identical or not. Whereas the equals () method compares two objects. Objects are equal when they have the same state (usually comparing variables). Objects are identical when they share the class identity. For example, the expression obj1==obj2 tests the identity, not equality.

To compare strings, you can use the method equalsIgnoreCase () from String class. The operator, ==, tests to see if two object reference variables refer to the exact same instance of an object. The method, .equals (), tests to see if the two objects being compared to each other are equivalent -- but they need not be the exact same instance of

Each of the three have their own purposes. equals () and hashCode () are majorly used to identify whether two objects are the same/equal. Whereas, toString () is used to Serialise the object to make it more readable in logs. From Effective Java: You must override hashCode () in every class that overrides equals ().

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how to use equals method in java