Few String Properties and Functions. Type casting is a process of converting one data type to another type, for example – converting int to long, long to double etc. In Kotlin you just have to define multiline strings in triple quotes and even get rid of indents. Since literals in Kotlin are implemented as instances of String class, you can use several methods and properties of this class.. length property - returns the length of character sequence of an string. It has two variants. Related posts: – Kotlin Convert String to Int Working environment: – Java 8 – Kotlin 1.1.61 ContentsI. Note that there are several other extension methods available in Kotlin to parse strings into other primitive types. String.toLongOrNull(): Long?2. In this tutorial we will learn how to do type conversion in Kotlin.. Kotlin Serialization has the following ten primitives: Boolean, Byte, Short, Int, Long, Float, Double, Char, String, and enums. Kotlin toLongOrNull() method1. Declare a String in Kotlin. Literals of the kotlin string are implemented as instances of this type. Lets have a look at the following example, here we have declare two immutable strings website & longString and we have also declared two mutable strings name & lName. Strings are story sequences. In the tutorial, JavaSampleApproach will guide you how to convert Kotlin String to Long. In java, one type is automatically converted to other type (in some cases), In Kotlin we need to explicitly convert the type. An array is a collection of similar data types either of Int, String, etc. There are whole bunch of ways we can define a String in Kotlin. Array in Kotlin is mutable in nature with fixed size which means we can perform both read and write operations, on the elements of an array. The String class in Kotlin contains strings of characters. Returns 0 if the object is equal to the specfied object. ; compareTo function - compares this String (object) with the specified object. In this post, I will show you how to use this method with examples :. In Kotlin all strings are String Type objects. For examples, “hello there!” is a literal string. Kotlin toLong() method1 String.toLong(): Long2 String.toLong(radix: Int): LongII. These are toInt(), toBoolean(), toFloat(), toDouble(), toByte() and toShort().. 2. toLongOrNull() function Alternatively, you can use the toLongOrNull() function which parses the string as a Long and returns the result or null if the string is not a valid representation of a number. All types of integer and floating-point Kotlin numbers can be serialized. Kotlin String class provides one method called slice to get one sub-string containing the characters defined by the method argument. Similarly we can use toString to convert other datatypes as shown below : To convert Byte to String in Kotlin, use Byte.toString() To convert Short to String in Kotlin, use Short.toString() To convert Long to String in Kotlin, use Long.toString() Subscribe to our mailing list to receive tips in your inbox. From Kotlin 1.3, kotlin.random.Random is available as a multiplatform feature. Type conversion in Kotlin vs Java. Output: Type of str is String . It uses java.util.Random in JDK 6 and 7, ThreadLocalRandom in JDK 8+ and Math.random in Javascript. Numbers. It can also be compiled to native apps (Kotlin Native) and JavaScript apps (Kotlin … We can get a random String with the same approach: Kotlin makes use of double quotes to construct a literal series. Updated: June 26, 2018 Kotlin is a relatively new programming language. The other types in Kotlin Serialization are composite—composed of those primitive values. 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