String Equal To Javascript

Michael Zippo 04.11.2021

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There are three ways to compare strings in Java. The Java method equals () compares two string objects, the equality operator == compares two strings, and the compareTo () method returns the number difference between two strings.

Comparing strings is a crucial part of working with strings in Java. For example, if you are building a coffee app that checks who ordered that drink, you might want to compare it with what you have on file.

client name This tutorial will discuss, with references and examples, how to compare strings in Java. We will discuss the three main options used to compare strings and explore the limitations of the == operator when comparing strings in Java.

By the end of reading this tutorial, you will be I will be an expert at comparing strings in Java.

Java Strings

Strings are used to store text-based data in programming. Strings in Java are defined as a sequence of characters in quotes. Here is an example of a string in Java:

In this example, we declare a string called day that stores the value Monday.

What if we wanted to compare string by another string? There are three main methods that can be used to compare strings in Java. These are:

Using == operator
Using equals () and equalsIgnoreCase ()
Using the compareTo () and compareToIgnoreCase () methods

Compare strings by using ==

== operator, known under the name of the equality operator is used to compare two strings in Java.

Suppose we are running a coffee shop and we want to compare if a customer’s name matches the one we have associated with a particular order. We could compare these names using the following code:

Our code returns:

Break from Descended our code. First, we declare a class called CompareNames which stores the code for our program. We then declare a variable orderName which stores the name associated with a particular order and a variable called customerName which stores the name of the customer who is looking for their drink.

We then use an if statement and the equality operator for before the value of orderName and the value of customerName. line of code that performs this comparison:

If the values ‚Äã‚Äãstored in orderName and customerName are the same, as in this case, the message customer name matches the name of the order. is printed on the console. Otherwise, the message Customer name does not match the order name. is printed on the console.

string Compare objects using ==

In the example above, we have declared two strings and uti Read the == operator to compare them. However, this approach does not work when comparing two string objects.

Here is what happens if we try to compare two string objects using the == operator:

Our code returns:

Even though we assign the string value James to the two string objects, the program does not treat them the same. This is because the program will not compare the value of the strings, but the objects themselves.

In our code, we declared two string objects, each of which has references to different objects. So when we try to compare them using ==, they treat our program as different objects.

Compare strings using equals ()

The Java string The equals () compares two strings in Java

Either backs go to the coffee example. Suppose we want to compare the name we have associated with a coffee order and the name of a customer. We could do it using this code:

Our code returns:

In this example, we are using the equals () to compare the values ‚Äã‚Äãof or rderName and customerName .

We assign the value of equals () to a boolean called AreEqual. If AreEqual true, the console displays a message indicating Customer name matches the name of the order. otherwise, if AreEqual returns false, a message is printed on the console indicating Customer’s name does not match the name of the order. . In this case, orderName and customerName are the same, AreEqual is equal to true.

You can use equalsIgnoreCase () in the same way as equals () to compare strings. The only difference between equals () and equalsIgnoreCase () is that the latter compares two strings regardless of their case, while the former is case sensitive .

If you want to learn more about the equals () string, read our tutorial on the subject.

Compare strings using compareTo ()

The Java compareTo () string method is used to lexicographically compare two strings

compareTo () method compares the Unicode value of each character in the two strings you are comparing. compareTo () returns 0 if the string is equal to the other string, less than 0 if the string has fewer characters than the other string, and greater than 0 if the string has more than characters than the other string.

Suppose we want to ssicographically compare the names of our cafeteria customers with the name we associate with a glass we could do it using this code:

In this example, our code uses compareTo () to compare the value of customerName with the value of orderName code>, in this case the value of orderName, James, does not match the value of customerName, Bill .

Since orderName has more characters than customerName, our code returns a value greater than 0, equal to the Unicode differences in our two strings.

Additionally, the compareTo () method is case sensitive . If you want to compare lexicographic strings regardless of the character cases in your strings, you can use the compareToIgnoreCase () method. The syntax of the compareTo () method and compareToIgnoreCase () is the same.

Conclusion

Comparing values ‚Äã‚Äãstored in two strings is a common operation in Java.

This tutorial explains how to compare two strings using the equality operator (==), equals () and compareTo () method . We also discussed the limitations of the equality operator when comparing objects. We have also shown an example of each of these methods in action.

You now have the skills to start comparing strings in Java like a professional programmer!

We hope this article has helped you to resolve the problem. Apart from String Equal To Javascript, check other __main__ Python module-related topics.