}] Output: ]Īccumulo,1,ActiveMQ,2,Adsense,1,API,37,ArrayList,18,Arrays,24,Bean Creation,3,Bean Scopes,1,BiConsumer,1,Blogger Tips,1,Books,1,C Programming,1,Collection,8,Collections,37,Collector,1,Command Line,1,Comparator,1,Compile Errors,1,Configurations,7,Constants,1,Control Statements,8,Conversions,6,Core Java,149,Corona India,1,Create,2,CSS,1,Date,3,Date Time API,38,Dictionary,1,Difference,2,Download,1,Eclipse,3,Efficiently,1,Error,1,Errors,1,Exceptions,8,Fast,1,Files,17,Float,1,Font,1,Form,1,Freshers,1,Function,3,Functional Interface,2,Garbage Collector,1,Generics,4,Git,9,Grant,1,Grep,1,HashMap,2,HomeBrew,2,HTML,2,HttpClient,2,Immutable,1,Installation,1,Interview Questions,6,Iterate,2,Jackson API,3,Java,32,Java 10,1,Java 11,6,Java 12,5,Java 13,2,Java 14,2,Java 8,128,Java 8 Difference,2,Java 8 Stream Conversions,4,java 8 Stream Examples,12,Java 9,1,Java Conversions,14,Java Design Patterns,1,Java Files,1,Java Program,3,Java Programs,114,Java Spark,1,java.lang,4,java.util. Fortunately, Kotlin has improved quite a bit on Java’s verbosity, so I promise there’s a better way to create an ArrayList. Println( "print converted int array as string : "+ Arrays.toString(array))
converting list to array list.toArray(array) creating an empty intger array with size of list. Convert List to Array in Kotlin [package Hence, to see the actual contents inside the array, you should call Arrays.toString() method.ģ. If you print directly returned array then it prints memory address of the array. Next, call list.toArray(array) which internally copies all values from list to array. Kotlin base package has a function arrayOfNulls(int size) which takes the size of the array that should be created and it should hold the String type values.Īfter the array is created then it will have null values in it. * Sorting array of array list to get Biggest to smallest array List based of sizeĬollections.Therefore, always array size should be as same as List when doing a conversion. It worked perfectly fine there but now I'm unable to achieve this in Koltin I'm getting an ERROR.Ĭonsider I've a class Foo() private var allHistoryList: ArrayList> = arrayListOf() I did the same thing in java using Collections. I have an ArrayList of ArrayList what I want to achieve is, to sort them in descending order (based on the Highest to lowest List size ) to get the largest first and onwards.
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