In fact, they override toString() method to return their value as String.ītw, you need a Short object to convert it to String. If you remember, the object class provides a toString() method which is used to convert any Object to String and wrapper classes like Short or Integer is no different. So far, we have looked at the examples of converting a String object to Short object or primitive in Java but what about the opposite? how do you convert a Short object or primitive to a String? Well, that's not difficult and in most cases done by Java automatically. It not only provides better performance by caching commonly used value but also decouple your code from the Short constructor. The Short constructor is even though a simple approach, it's not recommended because it directly couple your code with a Short constructor.Īs suggested in Joshua Bloch's classic book Effective Java, The static factory method like valueOf() is better than the using constructor. The preferred method is always the valueOf() method because it can cache frequently used values and save memory by returning immutable objects.īut, if you need a short primitive value then you can directly use the Short.parseShort() method because it returns a short value and you don't require unboxing. the Best way to convert String to Short in Java? You can leverage caching to improve performance and control number of instances, particularly for an immutable class like Short.Ĥ. As advised in Effective Java 3rd Edition by Joshua Bloch, it's better to use static factory methods like Short.valueOf() rather than constructor for creating objects. Short value = new Short( "32768") //throws errorĮven though it's simple, it's not the best way. ![]() Short value = new Short( "-2001") //returns negative 2001 Short value = new Short( "+2001") //returns positive 2001 ![]() Short value = new Short( "1001") //returns 1001 Here are some examples so Short constructors for converting a String object to Short in Java: This method also follows all the parsing rules followed by parseShort() method, in fact, it internally uses that method but unlike valueOf() method it returns a new Short object every time you call it. The most simple and obvious way to convert a String value to a Short object in Java is by using the new Short(String value) constructor, which takes a String object and returns an equivalent short value. See these free Java Programming courses to learn more about Auto-boxing and Unboxing in Java. In short, use this method if you need a Short object rather than short value to avoid auto-boxing. valueOf( "32768") // throw errorīecause of caching, it reduces the number of the temporary Short object for the frequently used range. Here are some examples of Short.valueOf() method: Similar to Integer.valueOf() method this one also caches Short values in the range -128 to 127. This method internally uses the parseShort() method for parsing but on top of that, it provides caching. You can use this method if you need a Short object rather than a short value. Short.parseShort(String value, int radix) which can be used to convert a binary, octal, or hexadecimal String to equivalent short value. The method is also overloaded to support radix like. This method throws an error if given String is invalid like contains characters other than a decimal digit and positive or negative sign or an out-of-range short value. ![]() In this article, our focus will be short,t but they are also very useful for converting other data types like int, char, boolean, long, floa,t and double in Java. If you are new to the Java world, you can further see these best Java Programming Courses learn more about Java fundamentals like those. If you have used parseInt() or Integer.valueOf() method in past then you can understand how they behave, both parseShort() and Short.valueOf() behave in same way. Now, similar to String to Integer example, there are 3 main ways to convert a String to a short primitive value or Short object in Java: The number is also represented in two's complement integer. The short primitive type is also a signed variable, which means the first bit is used to store the sign bit. You might be wondering why the upper bound is 255 and the lower bound is -256 but that's because we have included zero in between. Since it takes only 2 bytes or 16 bits to store data, the range of short is also shorter than int. The short is an integral data type similar to the int but it only takes 2 bytes to store data as compared to 4 bytes required by an int variable. In the last couple of examples, I have taught you how to convert String to Integer, Long, Double, Float, Boolean, and Byte in Java, and today I will show you how to convert String to Short in Java, but before that let's revise what is a short data type in Java.
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