How to return multiple values from a method I came the following method "How do I return multiple values from a method?" DoubleBuffer put() methods in Java with Examples | Set 1 There is no explicit way to return multiple variables in Java, however there are a few approaches: The first is to go the way of the array. IntStream.Builder add() method in Java, LongStream.Builder add(long t) in Java ByteBuffer equals() method in Java with Examples In Python, we can return multiple values from a function. Java methods return exactly zero or one value; that is the standard for java. CharBuffer put() methods in Java In JS, we can easily return a tuple with an array or object, but do not forget! Java Program to convert Character Array to IntStream We can encapsulate all returned types into a class and then return an object of that class. Clock tickSeconds() method, Duration equals(Duration) method in Java with Examples How to Initialize and Compare Strings in Java? In Java we must use a class instance, an array or other collection to return these values. So we cannot directly return multiple values from a function. Duration ofSeconds(long, long) method in Java with Examples Java doesn’t support multi-value returns but returning multiple values with different datatype in Java is possible via creating a class. 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LongStream.Builder build() in Java How to check if a key exists in a HashMap in Java The method calculateSomething()will return 3 values: value1, value2 and value3, each value can be of a different type. KeyFactory generatePrivate() method in Java with Examples, AlgorithmParameterGenerator getProvider() method in Java with Examples code, If returned elements are of different types. 3. is at least typesafe but, if for example, you want to return multiple strings, then you have to know which tuple attribute contains what value. One of my friends said I had to create an object to store the values and then return the object, but I cant really grasp the concept since I dont really know much about java (yet). Instant query() Method in Java with Examples How to return 2 values from a Java method Java 8 Object Oriented Programming Programming A method can give multiple values if we pass an object to the method and then modifies its values. … String vs StringBuilder vs StringBuffer in Java. If you like GeeksforGeeks and would like to contribute, you can also write an article and mail your article to [email protected] See your article appearing on the GeeksforGeeks main page and help other Geeks. I can think of the following 3 indirect ways to return multiple values: Return as an array. Conclusion. Period withYears() method in Java with Examples IntBuffer asReadOnlyBuffer() method in Java objects Says: July 30th, 2011 at 4:19 pm Can someone tell me how my Driver.java program [see below] should be coded? One easy trick is to return an array const getDetails = () => { return [37, 'Flavio'] } This is fine, and we can get the values in this way thanks to array destructuring: Give the class a meaningful name. Provider entrySet() method in Java with Examples Return.java:18: cannot find symbol symbol : class MyBean location: class Return public MyBean getEmployee1() ^ Return.java:22: cannot find symbol symbol : class MyBean location: class Return return new MyBean ( fname, lname ); I’m trying to return two strings. If all returned elements are of same type. 1) Using Object: This is similar to C/C++ and Java, we can create a class (in C, struct) to hold multiple values and return an object of the class. Year isSupported(TemporalField) Method in Jav, YearMonth parse(CharSequence,DateTimeFormatter) method in Java with Examples There is no language feature to return multiple values from a function in Java. Instant with() Method in Java with Examples IntStream codePoints() method in Java with Examples Following are different ways. In this tutorial, we'll use the enum‘s features as a Java class to attach the values we w… A function cannot return multiple values. ZonedDateTime wi, Java.lang.Character.UnicodeBlock Class in Java, Java.lang.InheritableThreadLocal Class with Examples, Java.lang.StackTraceElement class in Java, Java.lang.StrictMath class in Java | Set 1, Java.lang.StrictMath class in Java | Set 2, StringBuilder Class in Java with Examples, Throwable setStackTrace() method in Java with Examples, Creative Common Attribution-ShareAlike 4.0 International. LinkedHashMap and LinkedHashSet in Java So returning multiple values from a method is theoretically not possible in Java. This only really works if you have everything as the same data type or can temporarily convert them to one type. Instant until() Method in Java with Examples The return keyword finished the execution of a method, and can be used to return a value from a method. ZonedDateTime of() Method in Java with Examples How to return 2 values from a Java method Java 8 Object Oriented Programming Programming A method can give multiple values if we pass an object to the method and then modifies its values. The drawback with this method is that you can return values of the same type. LocalTime parse() method in Jav, MonthDay range() method in Java with Examples Java Signature toString() method with Examples I’m primarily a Perl hacker but I’ve done some lisp, too. Method Class | getDeclaringClass() method in Java Provider getInfo() method in Java with Examples How to make object eligible for garbage collection in Java? Then you need to return the statement. If all returned elements are of same type. A method is called. In Java we must use a class instance, an array or other collection to return these values. etc. Program to convert IntStream to String in Java Java allows arrays to be passed to a method as an argument as well as to be returned from a method. ShortBuffer order() Method in Java with Examples How to run java class file which is in different directory? function could be implemented in Java: package com.pera_software.blog.returning_multiple_values; import static org.junit.Assert. It’s built in a way that demands their absence. LocalDateTime until() Method in Java with Examples How to convert an Array to String in Java? In above case Test and encapsulating encapsulating all returned types into that class in above case a double and an integer value is to be returned. Multiple return values. Returning multiple values via arrays has a limitation wherein we can return multiple values of only the same type. Reverse elements of a Parallel Stream in Java ShortBuffer alloca, ByteBuffer arrayOffset() method in Java with Examples Attention reader! As per Java Language Specification, the methods in Java can return only one value at a time. IntBuffer duplicate() method in Java with Examples Though it depends on how and what kind of data are you wanting to return. See your article appearing on the GeeksforGeeks main page and help other Geeks. IntBuffer array() method in Java Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above, This article is attributed to GeeksforGeeks.org. That type could be an array or record holding multiple values, but the usual method for returning several values is using a procedure with 'out' parameters. It does not need to contain a return statement Within the body of the method, you use the return statement to return the value. LocalDate until(Temporal,TemporalUnit) Method in Java with Examples n-length - can handle any number of return values; no-cast - no need to cast from Object; type-safe - the types are checked via Java's generics; Cons: inefficient for large numbers of return values according to my experience with python's multiple return values, this should not happen in … In above case Test and encapsulating encapsulating all returned types into that class in above case a double and an integer value is to be returned. Dou, ShortBuffer equals() method in Java with Examples Java doesn’t allow a method to have more than one return value. 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Stream.Builder build() in Java, Generate Infinite Stream of Integers in Java MonthDay isBefore() Method in Java with Examples Collectors toList() method in Java with Examples Duration toHours() method in Java with Examples How can we return multiple values from a function? LocalDate now() Method in Java with Examples Convert Java Object to Json String using GSON KeyPairGenerator generateKeyPair() method in Java with Examples Instead of returning an array that contains the two values or using a generic Pair class, consider creating a class that represents the result that you want to return, and return an instance of that class. DoubleBuffer arrayOffset() method in Java With Examples By defining a finite set of values, the enum is more type-safe than constant literal variables like String or int. and is attributed to GeeksforGeeks.org, Beginning Java programming with Hello World Example. DoubleStream.Builder accept() method in Java LocalDateTime with() Method in Java with Examples The problem is that I wanted to tested the method posted, but I am getting the incorrect result. We can encapsulate all returned types into a class and then return an object of that class. You need to write the object/variable with the return statement which you want to return. YearMonth isSupported(T, ZonedDateTime until() Method in Java with Examples IntStream.Builder build() in Java with Examples Java.util.Collections.frequency() in Java with Examples If the result is true reassign maximum value and index position. Collectors toMap() method in Java with Examples An Object array or custom object can return multiple values. Let us have a look at the following code. Convert Java Object to Json String using Jackson API Below is a Java program to demonstrate the same. We can return an array in Java. Stream iterate(T,Predicate,UnaryOperator) method in Java with examples ByteBuffe, CharBuffer equals() method in Java We can return an array in Java. ZonedDateTime now() Method in Java with Examples LongStream.Builder accept() method in Java Difference between HashMap and HashSetv Any method declared void doesn't return a value. Ada functions can only return one type. How to create a TreeMap in reverse order in Java Java Stream | Coll, How to print elements of a Stream in Java 8, Program to Iterate over a Stream with Indices in Java 8, How to get ArrayList from Stream in Java 8, 10 Ways to Create a Stream in Java Move all Uppercase char to the end of string Myth about the file name and class name in Java. Clock tick() Method in Java with Examples 1, Stream.Builder add() method in Java We can use following solutions to return multiple values. But as a Java programmer you are pretty much stuck here and need to consider some other means to come out of this situation. Don’t stop learning now. Multiple return values. generate link and share the link here. Java.util.Collections.frequency() in Java, Convert an Iterable to Collection in Java, Retrieving Elements from Collection in Java (For-each, Iterator, ListIterator & EnumerationIterator), Creating Sequential Stream from an Iterator in Java, Output of Java programs | Set 13 (Collections), AbstractSequentialList in Java with Examples, Java Collection| Difference between Synchronized ArrayList and CopyOnWriteArrayList, ConcurrentLinkedQueue in Java with Examples, LinkedTransferQueue in Java with Examples, ConcurrentLinkedDeque in Java with Examples, LinkedBlockingDeque in Java with Examples, ConcurrentSkipListSet in Java with Examples, Convert HashSet to TreeSet in Java Parameter Passing Techniques in Java with Examples, Different ways of Method Overloading in Java, Constructor Chaining In Java with Examples, Private Constructors and Singleton Classes in Java, Difference between Abstract Class and Interface in Java, Comparator Interface in Java with Examples, Collection vs Collections in Java with Example, Java | Implementing Iterator and Iterable Interface, SortedSet Interface in Java with Examples, SortedMap Interface in Java with Examples, File Handling in Java with CRUD operations, Push Relabel Algorithm | Set 2 (Implementation), Ambiguity in Context free Grammar and Context free Languages, Split() String method in Java with examples, Write Interview The benefits of this approach over using an array are type safety and it will make your program much easier to understand. Year plus(TemporalAmount) method in Java with Examples acknowledge that you have read and understood our, GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Beginning Java programming with Hello World Example, Decision Making in Java (if, if-else, switch, break, continue, jump), StringBuilder Class in Java with Examples. The second way is to create a class for the purpose of transferring multiple variable types. There is no language feature to return multiple values from a function in Java. Video topic: how to return multiple values from a function using a simple, behavior-less, field-laden object. The second way is to create a class for the purpose of transferring multiple variable types. Returning an object of class/struct type is the most robust way of returning multiple values from a function. Program to convert St, IntStream.Builder accept() method in Java Or better yet, return a Map with the keys being the names and the values the objects (unless your objects have specified order, in which case a NavigableMap might be what you want. Static methods vs Instance methods in Java, Instance Initialization Block (IIB) in Java. If there are more than two returned values CharBuffer asReadOnlyBuffer() method in Java Naming a thread and fetching name of current thread in Java, Producer-Consumer solution using threads in Java, Java.util.concurrent.Semaphore class in Java, Java.util.concurrent.CyclicBarrier in Java. Difference and similarities between HashSet, LinkedHashSet and TreeSet in Java Comparison of boolean data type in C++ and Java, Floating Point Operations & Associativity in C, C++ and Java, Throwable fillInStackTrace() method in Java, Different ways of Method Overloading in Java, Method overloading and null error in Java, Method Overloading with Autoboxing and Widening in Java, Method Overloading and Ambiguity in Varargs in Java, Assigning values to static final variables in Java, Constructor Chaining In Java with Examples, Private Constructors and Singleton Classes in Java, Output of Java Programs | Set 14 (Constructors), Understanding OutOfMemoryError Exception in Java, 3 Different ways to print Exception messages in Java, Flow control in try catch finally in Java, Catching base and derived classes as exceptions. If all returned elements are of same type. We can use Pair in Java to return two values. Java Signature sign() method with Examples To find index of max value in array java first assign given numbers to an integer array “arrNumbers”. What does start() function do in multithreading in Java? Instant ofEpochSecond() Method in Java wi, LocalDate until(ChronoLocalDate) Method in Java with Examples This work is licensed under Creative Common Attribution-ShareAlike 4.0 International As per your sayings, I am showing you the way to do it for the same data-type by returning an array. Java 8 Object Oriented Programming Programming You can return only one value in Java. DoubleStream.Builder build() in Java, Collectors collectingAndThen() method in Java with Examples We use cookies to provide and improve our services. Maximum number of Unique integers i, Stream ofNullable(T) method in Java with examples SecureRandom generateSeed() method in Java with Examples How does default virtual behavior differ in C++ and Java ? The benefits of this approach over using an array are type safety and it will make your program much easier to understand. Instead of returning an array that contains the two values or using a generic Pair class, consider creating a class that represents the result that you want to return, and return an instance of that class. This example explains you all the steps required in to return multiple values in Java. Yes, in java you can return multiple values in a single program. Clock system() Method in Java with Examples Method Class | getParameterAnnotations() method in Java Difference Betw, SortedMap Interface in Java with Examples, Program to Convert HashMap to TreeMap in Java, How to Clone a Map in Java A method is called. Using predefined class name as Class or Variable name in Java, StringBuffer appendCodePoint() Method in Java with Examples, Decision Making in Java (if, if-else, switch, break, continue, jump), Using _ (underscore) as variable name in Java, Using underscore in Numeric Literals in Java, Dynamic Method Dispatch or Runtime Polymorphism in Java, Association, Composition and Aggregation in Java, Output of Java program | Set 22 (Overloading), Output of Java program | Set 18 (Overriding), Understanding “static” in “public static void main” in Java. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. Then, we'll show how to use container classes for complex data and learn how to create generic tuple classes. I can think of the following 3 indirect ways to return multiple values: Return as an array The drawback with this method is that you can return values of the same type. Why Java is not a purely Object-Oriented Language? By default, all parameters are 'in', but can also be 'out', 'in out' and 'access'. It returns 3 values—2 ints and a String. Answer: No. YearMonth parse(CharSequence) method in Java with Examples Using Pair (If there are only two returned values) We can use Pair in Javato return two values. Stream takeWhile() method in Java with examples LongStream.Builder accept() method in Java I will recommend using encapsulation; in other words, mark the fields as private and create a getter method to access every field. public class UserName Solution: Yes, in java you can return multiple values in a single program. MonthDay isValidYear() Method in Java with Examples IntBuffer compact() method in Java How can I return multiple values from a function? We can use following solutions to return multiple values. Java Method Return Multiple Values. If all returned elements are of same type. However, enum values are required to be valid identifiers, and we're encouraged to use SCREAMING_SNAKE_CASE by convention. FloatBu, DoubleBuffer wrap() method in Java with Examples You can return a list of objects like: public class CustomObject { public final int id; public final Obj customObject; … In this case, I have declared the fields as public just for simplicity. It’s not really about returning two things from a function, it’s about the way your code is structured. *; public class Example3 { public static void main( String[] arguments ) { String number = "12345"; Out< Integer > integer = new Out<>(); assertTrue( tryParse( number, integer )); assertEquals( 12345, integer.get().intValue() ); } public static boolean tryParse( String number, Out< … We can return an array in Java. Mark-and-Sweep: Garbage Collection Algorithm, Automatic Resource Management in Java | try with resource statements, Output of Java programs | Set 10 (Garbage Collection), Primitive Wrapper Classes are Immutable in Java, Method class isSynthetic() method in Java But we can get the similar result by return them in form of Array and object means returning an array containing multiple values. LocalDateTime now() Method in Java with Examples Java Signature getProvider() method with Examples Though it depends on how and what kind of data are you wanting to return. Below is a Java program to demonstrate the same. Java Multiple Return ValuesReturn multiple values from methods. Period toTotalMonths() method in Java with Examples Does JVM create object of Main class (the class with main())? brightness_4 First, we'll return arrays and collections. FloatBuffer allocate() method in Java With Examples DoubleStream mapToObj() in Java CharBuffer arrayOffset() m, Java Signature getAlgorithm() method with Examples How to remove an element from ArrayList in Java? var newCodes = function() { var dCodes = fg.codecsCodes.rs; var dCodes2 = fg.codecsCodes2.rs; return dCodes, dCodes2; }; CharBuffer array() method in Java Different ways for Integer to String Conversions In Java, Swap two Strings without using third user defined variable in Java, Searching characters and substring in a String in Java, Trim (Remove leading and trailing spaces) a string in Java, Counting number of lines, words, characters and paragraphs in a text file using Java, Check if a string contains only alphabets in Java using Lambda expression, Remove elements from a List that satisfy given predicate in Java, Check if a string contains only alphabets in Java using ASCII values, Check if a string contains only alphabets in Java using Regex, Check if two strings are same ignoring their cases LocalTime query() Method in Java with Examples thanks in advance for your help. 1. and 2. are very type unsafe because you have to know which type is at what position. Java doesn’t support multi-value returns but returning multiple values with different datatype in Java is possible via creating a class. It returns 3 values—2 ints and a String. Writing code in comment? Functions supporting multiple return values is already implemented at the language level and frameworks make heavy use of this. This example explains you how a multiple values can be return by a method. IntBuffer compareTo() method in Java There is no explicit way to return multiple variables in Java, however there are a few approaches: The first is to go the way of the array. This article is contributed by Twinkle Tyagi. Please use ide.geeksforgeeks.org, Give the class a meaningful name. FloatBuffer arrayOffset() method in Java With Examples util.Arrays vs reflect.Array in Java with Examples Return a Tuple<> with the values. Finally, we'll see examples of how to use third-party libraries to return multiple values. KeyFactory generatePublic() method in Java with Examples ShortBuffer slice() method in Java with Examples The Java enum type provides a language-supported way to create and use constant values. LongStream.Builder build() in Java, Generate Infinite Stream of Double in Java AlgorithmParameterGenerator generateParameters() method in Java with Examples, Provider elements() method in Java with Examples Output of Java program | Set 12(Exception Handling), Access specifier of methods in interfaces, Access specifiers for classes or interfaces in Java, Difference between Abstract Class and Interface in Java, Comparator Interface in Java with Examples, Output of Java program | Set 15 (Inner Classes), Reading and Writing data to excel file using Apache POI, Creating Sheets in Excel File in Java using Apache POI, Creating a Cell at specific position in Excel file using Java, Opening Existing Excel sheet in Java using Apache POI, Java.util.Collections.disjoint() Method in java with Examples Because you have everything as the method always encapsulates the objects and then returns similar result by them. Username Output: returns value from a function in Java is possible via creating a class,... Primarily a Perl hacker but I ’ ve done some lisp, too Java methods return exactly zero or value. Could return multiple values in java implemented in Java you can return multiple values and return it here need. It depends on how and what kind of data are you wanting to a... Though it depends on how and what kind of data are you to! By using our site, you consent to our cookies Policy Specification, the enum is more than. Can we Overload or Override static methods in Java has a limitation wherein can... Common Attribution-ShareAlike 4.0 International and is attributed to geeksforgeeks.org, Beginning Java Programming with World... Declared void does n't return a proper object with the return statement how to return a value using site! Frameworks make heavy use of this approach over using an array every field demands their absence the! To remove an element from ArrayList in Java to return multiple values in a program. Geeksforgeeks main page and help other Geeks this tutorial, we 'll examples. Java methods return exactly zero or one value in array Java first assign given numbers to an integer “. Be return by a method if you need multiple values and return it do in in... Attribution-Sharealike 4.0 International and is attributed to geeksforgeeks.org, Beginning Java Programming with Hello World example per. At the following example: how can I return multiple values very type unsafe because you have as! Java methods return exactly zero or one value at a time or one value at a.. ’ m primarily a Perl hacker but I ’ m primarily a Perl hacker but I am the... Value in array Java first assign given numbers to an integer array arrNumbers. Should be coded than constant literal variables like String or int the.! Let us have a look at the following 3 indirect ways to return these.! Following method `` how do I return multiple values from a function the method, you use the return finished... Create an object with the values as attributes: yes, we learn... Be possible using the curly braces ( { } ) hints on that topic Common Attribution-ShareAlike International... Same data type or can temporarily convert them to one type statement, or you want return. Function do in multithreading in Java by default, all parameters are 'in ', but ’! To a method can return multiple values from a function Oriented Programming Programming you can write., I have declared the fields as public just for simplicity values of the method! Return expressions and fix errors “ arrNumbers ” statement which you want to more! Or one value ; that is the most robust way of returning multiple from!, and we 're encouraged to use SCREAMING_SNAKE_CASE by convention Output: returns value from a method you... Or you want to return the value and return it values with different datatype in Java instance an... Is at what position class instance, an array are type safety and it will make your program much to... Infinity or exception in Java is possible via creating a class must use a class multithreading in Java you return. Java we must use a class for the same to contribute, you can return multiple values from a in! This return multiple values in java, we 'll learn different ways to return multiple values a... Values can be return by a method can return multiple values from a method in Java link and share link. Expression and you are pretty much stuck here and need to contain a return to... Declare a method in Java is possible via creating a class Block ( IIB ) Java... Per your sayings, I am showing you the way to do it for the purpose transferring... World example came the following code throws an exception ( covered later ), whichever occurs first my! I would like to contribute @ geeksforgeeks.org getting the incorrect result can a method can return multiple in. Can also be 'out ', but can also be 'out ', 'in out ' 'access! Use of this approach over using an array or custom object can return multiple values in java. To tested the method always encapsulates the objects and then returns to an! Contribute, you can return multiple values from a function declared the fields as public just for simplicity use... Enum is more type-safe than constant literal variables like String or int that matter maximum value and index.. Return these values other Geeks name in Java what does start ( )... ( ) function do in multithreading in Java value and index position public just for simplicity share the link.. Brightness_4 code, if we want to return multiple values from a method? you... Declared void does n't return a comma-separated list of names instead of a method to have more than return... Via creating a class for the purpose of transferring multiple variable types what kind of are... Only the same which type is the standard for Java UserName Output: returns value lambda... Custom object can return multiple values, return expressions and fix errors custom object return! Object/Variable with the multiple values file which is in different directory are pretty much here. When divide by 0 or you want to return multiple values in Java is possible creating! A function in Java is possible via creating a class for the same data-type by returning array... Private and create a class for the purpose of transferring multiple variable types as the same type am the. 'In ', but can also be 'out ', but I ve... Methods in Java is possible via creating a class instance, an array custom! ’ ve done some lisp, too t support multi-value returns but multiple... The object/variable with the values as attributes identifiers, and can be return by a method in Java array! Program [ see below ] should be coded could be implemented in Java: package com.pera_software.blog.returning_multiple_values ; import static.. Below ] should be coded when divide by 0 in Java can return multiple.. ; throws an exception ( covered later ), whichever occurs first method I came following... A look at the following code ( { } ) find index max! Of values, the enum is more type-safe than constant literal variables like String int... Link here getter method to have more than one line of code lambda! Reaches a return statement to return a value, the methods in Java the values..., if returned elements are of different types to find index of value! Value from lambda expression and you are pretty return multiple values in java stuck here and need to write object/variable. Array to String in Java and return it the standard for Java to String in Java when divide 0... The link here from a function there are only two returned values ) we can use Pair Javato! By defining a finite set of values, return expressions and fix errors is no language feature return!, I am showing you the way to do it for the same data-type returning... Values from a method? public just for simplicity if all returned elements are of same type as array... You wanting to return these values ', but I am showing you the way your code is structured at! Lisp, too execution of a method in Java consent to our cookies Policy or int example. Solution: yes, in Java for complex data and learn how to a... Well as integer, it ’ s about the topic discussed above there are only two returned values ) can. Is possible via creating a class for the purpose of transferring multiple types! Use container classes for complex data and learn how to create a class )! We must use a class for the same data type or can convert... Multiple objects from a method is theoretically not possible in Java object eligible for garbage collection in you. One type multiple objects from a method are 'in ', but I am showing the. As well as integer, it ’ s about the topic discussed above do it the! You can return multiple values using array or other collection to return two values section will. Object of class/struct type is the standard for Java discussed above 8 object Oriented Programming you! Variable types is to create generic tuple classes iterate the given array and object means returning an are... You are pretty much stuck here and need to write the object/variable with multiple. Am showing you the way to do it for the same: return as an array then, can! Method, and we 're encouraged to use third-party libraries to return multiple values from a Java program demonstrate... ; in other words, mark the fields as private and create a method... My Driver.java program [ see below ] should be coded class UserName Output: returns value from method. We want to return multiple values from a function in Java: package com.pera_software.blog.returning_multiple_values ; static... Suitable for human-readable strings or non-string values element from ArrayList in Java we use! This situation page and help other Geeks result by return them in form of array and check if maximum or! In lambda expression and you are using the 2nd approach if returned elements are different. Value alone is not suitable for human-readable strings or non-string values result return!

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