JAVA program to compare two strings without using string method equals() This JAVA program is to compare two strings without using string method equals(). For example, str1=”code” and str2=”code” then on comparing we find that the two strings are equal. Logic. We first check if both their lengths are equal. No, if you don't override the equals-method in your class, then equals is the same as ==.See the documentation for this:. The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true). equals () checks if two objects are the same or not and returns a boolean. compareTo () (from interface Comparable) returns an integer. It checks which of the two objects is "less than", "equal to" or "greater than" the other. Not all objects can be logically ordered, so a compareTo () method doesn't always make sense. The equals method checks either the identity or the equality based on the implementation. The == operator always checks the identity of an object. The Objects.equals method checks for null references and then delegates the check to the equals method of the first argument. The equals method inherited from the Object class checks the identity of I'm trying to override the equals() method that takes an Object as input. I have the following classes in the same package. public class Herd{ int count; boolean exists; In the class that is overriding the method, I am trying to compare whether the Object matches the variable in position, rank, and if they are the same Class String in java uses a String Literal Pool, this means is: "When you try construct a string, first String class search in Literal Pool for traditional same string ,if exist return it, and if don't exist create it", so you can't check by equals method compare refernce of String instance, you have to use == operator as following: somewhat late to the party, but for the null check, you should do "Peter".equals(name). That way you don't have a possible null object to invoke an operation on Conferences. Wim Deblauwe. hashCode () methods are 2 important methods that you usually should override when defining your own classes. . We will see in a bit what that means exactly for different types of objects. . It facilitates the that is used by those data structures. : An object that has a distinct identity within the application domain. .

how to test equals method in java