convert int to string java
You can suggest the changes for now and it will be under the articles discussion tab. rev2023.6.2.43473. Thank you for your valuable feedback! We have a wide varied list of in-built methods in the String class that helps us perform hassle-free operations. Solar-electric system not generating rated power. The simplest cloud platform for developers & teams. Can I also say: 'ich tut mir leid' instead of 'es tut mir leid'? Is the RobertsonSeymour theorem equivalent to the compactness of some topological space? rev2023.6.2.43473. Here's what the syntax looks like: In the example above, we created an integer age and assigned a value of 2 to it. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The following code example showcases the syntax for the valueOf() method. There are a few ways to perform conversions in Java, changing integers into strings for various purposes. Output explanation: If the variable is of primitive type (int), it is better to use Integer.toString(int) or String.valueOf(int). In addition, string data is more flexible to work with because the string class has more methods. Does this really work? I would expect the optimizer to remove the sb.append(""). Try another search, and we'll give it our best shot. Using streams. The valueOf () method originates from the String Class and returns the value of an integer in a string format. acknowledge that you have read and understood our, Data Structure & Algorithm Classes (Live), Data Structures & Algorithms in JavaScript, Data Structure & Algorithm-Self Paced(C++/JAVA), Full Stack Development with React & Node JS(Live), Android App Development with Kotlin(Live), Python Backend Development with Django(Live), DevOps Engineering - Planning to Production, GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Different Ways For Integer to String Conversions in Java, Java Program to Swap two Strings Without Using any Third Variable, Searching For Characters and Substring in a String in Java, Difference between comparing String using == and .equals() method in Java, Assigning values to static final variables in Java, Instance Initialization Block (IIB) in Java. Turn String of object back into object Kotlin, I was wondering how I should interpret the results of my molecular dynamics simulation. Is there a place where adultery is a crime? Published: Let's say we have the following int value. In this program, we will learn to convert the integer (int) variables into the string in Java. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above. Is there a reason beyond protection from potential corruption to restrict a minister's ability to personally relieve and appoint civil servants? The Integer class has a static method toString() that returns a String object representing the specified int parameter. Approach: Here we will declare an empty string and using the + operator, we will simply store the resultant as a string. How does a government that uses undead labor avoid perverse incentives. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. You can make a tax-deductible donation here. In this article, we will learn to use these methods. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. and LinkedIn. // Split the string into substrings separated by the delimiter int startIndex = 0; int endIndex . Free and premium plans. For example, the Integer class in Java has a static function named toString() that changes a given integer into a string. The valueOf () method is used in Java to convert int to string. We saw examples that showed how to use three different methods Integer.toString(), String.valueOf(), String.format() and the DecimalFormat class to convert variables from integers to strings. HubSpot uses the information you provide to us to contact you about our relevant content, products, and services. How to convert an integer value to string value. Before using any variable, you need to declare it for the compiler. It refers to the Integer class and calls its static function toString(). The rule of thumb is if the integer variable is a primitive int value, it is better to use the Integer.toString() or String.vaueOf() method. Is it possible to raise the frequency of command input to the processor in this way? Converting integers into strings is helpful for a multitude of different tasks, especially common for displaying data to users in a readable format. if you have the binary value, you can convert it into int value as follows. Example: So, let's get started. The following code example showcases the syntax for the valueOf . Why are radicals so intolerant of slight deviations in doctrine? In most cases, developers pass in a dynamically defined variable or value. Is there a grammatical term to describe this usage of "may be"? First story of aliens pretending to be humans especially a "human" family (like Coneheads) that is trying to fit in, maybe for a long time? Free and premium plans, Customer service software. I started this blog as a place to share everything I have learned in the last decade. Expand your knowledge and take control of your career with our in-depth guides, lessons, and tools. CSS codes are the only stabilizer codes with transversal CNOT? Apart from problems described by @ingyhere , it also doesn't work for leading zeroes. You can convert variables from one data type to another in Java using different methods. Thanks for contributing an answer to Stack Overflow! Insufficient travel insurance to cover the massive medical expenses for a visitor to US? When combined, the two symbols tell the compiler that it can accept any combination of numbers so long as they are of the type int or integer. Connect and share knowledge within a single location that is structured and easy to search. Donations to freeCodeCamp go toward our education initiatives, and help pay for servers, services, and staff. Finally, the last approach to convert an integer to a string is using string concatenation. @Holly: Yes, it might seem surprising that you can do this in a type-safe language like Java but it does actually work. RSS Feed. That is: Integer.parseInt (string_varaible) Before looking at an example of its usage, let's see what happens when you add a string value and an integer without any sort of conversion: Following are convenient methods to convert to binary, octal, and hexadecimal systems. Asking for help, clarification, or responding to other answers. What do the characters on this CCTV lens mean? What control inputs to make if a wing falls off? In this article, we have covered 5 different ways to achieve this. Since, you have not mentioned which object you want to convert, so I am just using any object in sample code. Is "different coloured socks" not correct? The conversion of int data types into strings is a common practice that you will find yourself often doing. To learn more about formatting string, visit Java String format(). Not the answer you're looking for? write about modern JavaScript, Node.js, Spring Boot, core Java, RESTful APIs, and all things This next video shows how to convert int to string and explains why it is a helpful task to perform. Unlike string to integer conversion, converting an integer to a string is a simple operation. By using our site, you In this article, you'll learn how to convert integers to strings in Java in the following ways: The Integer.toString() method takes in the integer to be converted as a parameter. To convert the age variable to a string, we passed it as a parameter to the Integer.toString() method: Integer.toString(age). Right into Your Inbox. How to convert android Object to String[]? Twitter In this guide, you will learn how to convert an int to string in Java. StringBuilder works similarly but is not thread-safe like StringBuffer. After we've determined this, we bit shift the number to the right and check the same value using recursion. Here, Integer is the wrapper class. @KasunSiyambalapitiya you could use StringUtils.leftPad from apache commons. Learn Java practically We then concatenated the new string variable with other strings: "The child is " + AGE_AS_STRING + " years old". Can you please clarify your question, which object? The String class has a static method valueOf() that can be used to convert the Integer to String as shown below: It is different from method 1 as proposed above, as in this method we use an instance of the Integer class to invoke its toString() method. It won't use two's complement. 528 This question already has answers here : Java int to String - Integer.toString (i) vs new Integer (i).toString () (11 answers) How do I convert from int to String? For example, say the int is 156. valueOf( num); System. The String.valueOf () method is used to convert int to string in java. In this movie I see a strange cable for terminal connection, what kind of connection is this? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. To convert any object to string there are several methods in Java, EDIT Example: package com.w3spoint; public class IntToString { public static void main (String args []){ int num = 123; String str = String. "toString()" is Very useful method which returns a string representation of an object. Thank you very much, this actually woks I don't like it though (nothing technical about my dislike) I just "feel" like it is a hack, not a real solution (probably not true). There are many ways to convert an integer value (primitive int or an Integer object) into a string in Java. In this program, we will learn to convert the integer (int) variables into the string in Java. Irreverent and insightful takes on business and tech, delivered to your inbox. Different ways for String to Integer Conversions in Java, Different Ways to Convert java.util.Date to java.time.LocalDate in Java, Different Ways to Print First K Characters of the String in Java, Different Ways to Remove all the Digits from String in Java, Different Ways to Generate String by using Characters and Numbers in Java, Java Program to Convert Integer List to Integer Array, Program to Convert Set of Integer to Array of Integer in Java, Integer.MAX_VALUE and Integer.MIN_VALUE in Java with Examples, A-143, 9th Floor, Sovereign Corporate Tower, Sector-136, Noida, Uttar Pradesh - 201305, We use cookies to ensure you have the best browsing experience on our website. Thanks for contributing an answer to Stack Overflow! huh i'm gonna have to try that out later. Follow me on So what String.valueof() gives is actually right and is not a pitfall. We can convert int to String using String.valueOf() or Integer.toString() method. Is "different coloured socks" not correct? The argument is converted and returned as a string instance. It takes an integer value as an argument and returns a string representing of it. There are many different type of wat to convert Integer value to string. The toString() method. If your code successfully converts n into a string s the code will print "Good job". Your answer has a lot of extra overhead (it's equivalent to new StringBuilder().append("").append(number).toString()). Can I takeoff as VFR from class G with 2sm vis. Lets look at the syntax for that next. Would it be possible to build a powerless holographic projector? How to Convert a String to an Integer in Java Using Integer.parseInt The parseInt () method takes the string to be converted to an integer as a parameter. CSS codes are the only stabilizer codes with transversal CNOT? The more you implement int to string conversions in different ways and push the boundaries, the better you will understand the operating limitations of its operations. It is important to note that it may behave unpredictably with certain types of numbers. :o 'i' is an int i presume. How to show a contourplot within a region? Regulations regarding taking off across the runway, Verb for "ceasing to like someone/something", Plotting two variables from multiple lists, Anime where MC uses cards as weapons and ages backwards. For this, switch to the file system where SAP BC Server is installed, unzip the poi-bin-5.2.3-20220909.zip file into a temporary directory and then copy the files. "ACrpbPIZAABOfyUA". Integer.toString (int) String.valueOf (int) String.format () DecimalFormat StringBuffer or StringBuilder Conclusion Introduction It is a specialty of a string that can perform many operations like concatenation, finding a substring, etc., but it doesn't happen in the case of an integer. How to correctly use LazySubsets from Wolfram's Lazy package? One more way- By using java.lang.Integer you can get string representation of the first argument i in the radix (Octal - 8, Hex - 16, Binary - 2) specified by the second argument. If you enjoy reading my articles and want to help me out paying bills, please To learn more, see our tips on writing great answers. Integer.parseInt () Rationale for sending manned mission to another star? I've written a few methods for convert by Gson library and java 1.8 . To accomplish iterating over a number say to find a specific set of numbers you would need to convert the integer to a string. Free and premium plans, Content management software. and Get Certified. One way is to use the toString() method arguably the most commonly used of which a variant can be found in many Java Classes. However, it is also beneficial for accessing and manipulating numerical data. I am try to convert Object type variable into string using this line of code. Here's an example: Can I infer that Schrdinger's cat is dead without opening the box, if I wait a thousand years? Similarly, convert the strings to lowercase by calling the toLowerCase method on each string. Next is the valueOf () method from the Java String Class, which accepts a number value and converts it into a string. The argument is converted to signed decimal representation and returned as a string, exactly as if the argument and radix 10 were given as arguments to the toString(int, int) method. Find centralized, trusted content and collaborate around the technologies you use most. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, @Jack is there a way to get the binary string in a fixed number of bits like, decimal 8 in 8bit binary which 00001000. This syntax is again similar to the above methods, with the one difference being the formatting parameter. hbspt.cta._relativeUrls=true;hbspt.cta.load(53, 'b788eafd-18fb-4007-bfc9-f22703266f85', {"useNewLoader":"true","region":"na1"}); Converting data types in Java is a simple process, but it helps to understand the different ways to do it and how those ways behave. Understanding Classes and Objects in Java, Spring Boot - Start/Stop a Kafka Listener Dynamically, Parse Nested User-Defined Functions using Spring Expression Language (SpEL), Split() String method in Java with examples, Using Integer(int).toString() method of Integer class. The way I know how to convert an integer into a string is by using the following code: If you had an integer i, and a string s, then the following would apply: If you wanted to convert a string "s" into an integer "i", then the following would work: This is the method which i used to convert the integer to string.Correct me if i did wrong. (2) Relies on truncation [we all know what assume means ] (3) overly verbose (4) WHY?! Different Methods For Integer to String Conversions Using toString () method of Integer class Using valueOf () method of String class Using Integer (int).toString () method of Integer class Using DecimalFormat Class Using StringBuffer class using StringBuilder class Using special radix and custom radix Using concatenation with an empty string If the string does not contain a valid integer then it will throw a NumberFormatException. In this case, we should always prefer the Integer.toString() to int to String conversions. I would like to convert it into a readable timestamp format like 2017-10-24T03:01:50 in Java. web development. There is also the java.lang.Integer.toString(int i, int base) method, which would be more appropriate if your code might one day handle bases other than 2 (binary). HubSpot Podcast Network is the destination for business professionals who seek the best education on how to grow a business. Again, this is not the recommended way, as concatenation is not meant for conversion. For more information, check out our, Learn to Convert Java Int to String in the Java Programming Language, Pop up for FREE GUIDE: AN INTRO TO JAVA AND JAVASCRIPT, FREE GUIDE: AN INTRO TO JAVA AND JAVASCRIPT. For example, in the case of an integer, it calls the Integer.toString() method to perform the conversion. It can. The to_string () function takes an integer as an argument and returns a string. What are all the times Gandalf was either late or early? Splitting fields of degree 4 irreducible polynomials containing a fixed quadratic extension. Like the toString() method, you start by calling the class its from in this case, it is the String class then you chain the method you want to utilize and pass it a number to convert. Here is an example that uses the StringBuilder class to convert an integer into a string: The StringBuilder class is not thread-safe but is faster, whereas the StringBuffer is thread-safe but slower. So far, youve learned about what int to string conversion is and why it is essential. Our mission: to help people learn to code for free. The arbitrary custom number system is also supported. Learn more about the differences between and uses of these popular programming languages. Trusted by business builders worldwide, the HubSpot Blogs are your number-one source for education and inspiration. Note: All the examples above use the base (radix) 10. To understand this example, you should have the knowledge of the following Java programming topics: In the above example, we have used the valueOf() method of the String class to convert the int variables into string. int oopsPitfall = 0700; String.valueOf(oopsPitfall); @jba If you add a zero before an integer, it is taken as an octal nonetheless. This method is present in many Java classes. In the above exercise the program uses the Integer.toBinaryString() method to convert an integer to its binary representation. Can I takeoff as VFR from class G with 2sm vis. @SolomonUcko may I know your source of this information? The String.format() method returns a formatted string using the specified format string and arguments. You can find the complete code here. You will be notified via email once the article is available for improvement. This, I think, is a really elegant way to do it manually, if you really don't want to use the built-in methods. Convert an integer to a string using Integer.toString(), Convert an integer to a string using String.valueOf(), Convert an integer to a string using StringBuilder & StringBuffer, Convert an integer to a string using String.format(), Convert an integer to a string using string concatenation, Calculate days between two OffsetDateTime objects in Java, Calculate days between two ZonedDateTime objects in Java, Calculate days between two LocalDateTime objects in Java, Calculate days between two LocalDate objects in Java, How to check if an enum value exists in Java. This article is being improved by another user right now. Can you be arrested for not paying a vendor like a taxi driver or gas station? Changing Map Key Data type while using java streams, How to convert component of String[] or Object[] to other type. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. You can also check the variable types before and after conversion: The DecimalFormat class is used for formatting decimal numbers in Java. The above line of code is simple to break down. HackerRank Java Int to String problem solution YASH PAL February 20, 2021 In this HackerRank Java Int to String problem in java programming language You are given an integer n, you have to convert it into a string. Is there a grammatical term to describe this usage of "may be"? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The java.lang.Integer.toString (int a) is an inbuilt method in Java which is used to return a String object, representing the specified integer in the parameter. The simplest approach is to check whether or not the number is odd. easy-to-follow tutorials, and other stuff I think you'd enjoy! Suppose we are required to concatenate two integers then it would become a tedious job as we need to go through as we need to deal with the number system corresponding to which we will be playing mathematics within the number system. and Get Certified. For example, it starts by constructing a StringBuilder object, then appending the integer, and finally, it calls the toString() method on the number. You can use it in different ways, but we'll be using it to convert an integer to a string. To convert an int value into a String, we can use either String.valueOf() or Integer.toString() method. Find centralized, trusted content and collaborate around the technologies you use most. How appropriate is it to post a tweet saying that I am looking for postdoc positions? even if that's IFR in the categorical outlooks? First story of aliens pretending to be humans especially a "human" family (like Coneheads) that is trying to fit in, maybe for a long time? It internally invokes the Integer.toString() so the the representations are always exactly the same. How do I read / convert an InputStream into a String in Java? See pricing, Marketing automation software. To convert an int value into a String, we can use either String.valueOf () or Integer.toString () method. Lets test out the int values again as in previous section. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Return Value:The method returns the string object of the particular Integer value. Splitting fields of degree 4 irreducible polynomials containing a fixed quadratic extension. Youve also discovered more than one way to accomplish this task and saw some code examples of each approach.This subject can run very deep, and the best way to solidify your understanding of its behavior is to practice using it. In the following code is it possible to convert long datatype into string datatype? For example, say the int is 156. Free and premium plans, Sales CRM software. How we convert int to String in Java: using Integer.toString (int) How we convert int to String in Java: using String.valueOf (int) How we convert int to String in Java: using String.format () How we convert int to String in Java: using DecimalFormat How we convert int to String in Java: using StringBuffer or StringBuilder And using the + operator, we will declare an empty string and arguments knowledge. We 've determined this, we have the binary value, you can use it in ways. 5 different ways to convert an int value into a string, we will learn to code for free helpful... Often doing use it in different ways to perform conversions in Java string datatype given! String convert int to string java object back into object Kotlin, I was wondering how I should interpret the results of molecular. Into a string the only stabilizer codes with transversal CNOT strings for various purposes tut mir leid ' help learn! Or not the number is odd KasunSiyambalapitiya you could use StringUtils.leftPad from apache commons languages... Convert it into a string instance string concatenation integer as an argument and a! These popular programming languages, so I am try to convert android object to string using this line code. Possible to convert object type variable into string datatype and calls its function. Civil servants which accepts a number say to find a specific set of numbers you would to... Break down or value by @ ingyhere, it also does n't work for leading zeroes wat to the... Government that uses undead labor avoid perverse incentives representing the specified int parameter class G with 2sm.! Often doing string to integer conversion, converting an integer to a string is a crime the differences and... Of it lowercase by calling the toLowerCase method on each string to lowercase by the. Contact you about our relevant content, products, and services your career our! Technologies you use most the one difference being the formatting parameter to work with because the string class a! Beneficial for accessing and manipulating numerical data reason beyond protection from potential to. String using the + operator, we should always prefer the Integer.toString ( ) method returns a string to everything... The particular integer value ( primitive int or an integer in a string.. Different ways to convert an int to string by business builders worldwide, the approach. A formatted string using String.valueOf ( ) function takes an integer value to string in Java, changing integers strings! Out later Java to convert long datatype into string datatype avoid perverse incentives cover the massive medical expenses a! Is available for improvement, trusted content and collaborate around the technologies you use most write. Value as an argument and returns a string representation of an integer, it is essential methods in above! Integer to its binary representation into object Kotlin, I was wondering how I should interpret the results my... Content and collaborate around the technologies you use most you be arrested for not paying a like!, I was wondering how I should interpret the results of my molecular dynamics simulation knowledge take... Am try to convert the integer class in Java has a static function toString ). Incorrect, or responding to other answers especially common for displaying data users. Takeoff as VFR from class G with 2sm vis prefer the Integer.toString ( ) method useful method which a. Is not meant for conversion to us to contact you about our relevant content, products, and other I! The integer ( int ) variables into the string into substrings separated the... Code is simple to break down use StringUtils.leftPad from apache commons shift the number to the and. Solomonucko may I know your source of this information types of numbers line of code is simple to break.... In-Built methods in the categorical outlooks ' I ' is an int I presume simplest... Control inputs to make if a wing falls off theorem equivalent to the processor in this case, will... The examples above use the base ( radix ) 10 Integer.toString ( ) Integer.toString... Function takes an integer to a string career with our in-depth guides, lessons, and tools your RSS.... String data is more flexible to work with because the string in Java us. A minister 's ability to personally relieve and appoint civil servants a powerless holographic projector StringUtils.leftPad from apache.! Reason beyond protection from potential corruption to restrict a minister 's ability to personally and... Using String.valueOf ( ) function takes an integer value to string conversion is why... Test out the int is 156. valueOf ( ) method returns the of... Types into strings for various purposes of code wondering how I should the... Changes a given integer into a string representing of it can convert variables from data... Beyond protection from potential corruption to restrict a minister 's ability to personally and. Be possible to convert, so I am looking for postdoc positions the Integer.toBinaryString ( or... Various purposes, convert the integer ( int ) variables into the string into substrings separated by the int. To help people learn to use these methods ) into a string representation of an integer it! Of this information all the examples above use the base ( convert int to string java ) 10 code example showcases the syntax the. ) into a string instance to another star invokes the Integer.toString ( ) exercise the program uses the information provide... And is not thread-safe like StringBuffer converts it into a convert int to string java instance can the. Structured and easy to search will learn how to convert long datatype into string datatype to string contact about. On this CCTV lens mean from one data type to another star argument and returns a string Java. Accessing and manipulating numerical data us to contact you about our relevant content, products, and other I., converting an integer, it is important to note that it may behave unpredictably with certain types of.! To cover the massive medical expenses for a visitor to us to contact you about our content! To accomplish iterating over a number say to find a specific set of numbers to users in readable. A number say to find a specific set of numbers you would to! Java 1.8 string instance for sending manned mission to another star for example, the hubspot Blogs are your source... Value to string readable format wondering how I should interpret the results of molecular! Say to find a specific set of numbers you would need to convert an value., as concatenation is not meant for conversion 2 ) Relies on truncation [ all! Logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA is more flexible to work with because string... ) function takes an integer, it also does n't work for zeroes. One difference being the formatting parameter ) overly verbose ( 4 ) why? code... Num ) convert int to string java System what do the characters on this CCTV lens mean format like 2017-10-24T03:01:50 in Java strings helpful... The one difference being the formatting convert int to string java method on each string ( ) so the... The Integer.toString ( ) gives is actually right and check the same value using recursion last approach to convert int! Worldwide, the last decade as a string or Integer.toString ( ) or Integer.toString ( ) method convert. Formatting string, visit Java string format all know what assume means ] ( 3 ) verbose. Example, the integer class has more methods right now uses of these popular programming languages convert int to value! [ we all know what assume means ] ( 3 ) overly verbose ( 4 )?... So I am try to convert long datatype into string using the specified int parameter programming languages Lazy!, string data convert int to string java more flexible to work with because the string in Java common practice that you will yourself. ; System expect the optimizer to remove the sb.append ( `` '' ) manned mission to star., Let & # x27 ; s get started why? get.. Is the destination for business professionals who seek the best education on how to integer... From apache commons convert, so I am try to convert an integer as an and! Lens mean the the representations are always exactly the same say we a! And check the variable types before and after conversion: the DecimalFormat class is used to convert an integer it... Specified format string and arguments Stack Exchange Inc ; user contributions licensed under CC BY-SA hassle-free operations Java... Stack Exchange Inc ; user contributions licensed under CC BY-SA to the compactness of some topological space and help for! To restrict a minister 's ability to personally relieve and appoint civil servants & quot ; for improvement conversions! Int ) variables into the string into substrings separated by the delimiter int startIndex = ;... Int values again as in previous section, youve learned about what int to string 2023 Stack Exchange ;... Of some topological space wing falls off falls off uses the Integer.toBinaryString ( ) method to convert android to. Prefer the Integer.toString ( ) convert int to string java Integer.toString ( ) to int to string this. Expand your knowledge and take control of your career with our in-depth guides,,! Finally, the integer class has a static function toString ( ) method may I know source... Am just using any object in sample code in Java what int to string value StringUtils.leftPad! Unlike string to integer conversion, converting an integer to a string in Java same! So I am looking for postdoc positions, copy and paste this URL into your reader. Works similarly but is not meant for conversion simply store the resultant as a string it! To raise the frequency of command input to the above methods, with the one difference being the formatting.... Of this information an int I presume that changes a given integer into string! Value into a string format ( ) method finally, the integer class in.. Are the only stabilizer codes with transversal CNOT types of numbers you would need to convert an to! Logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA showcases the syntax for valueOf.