Core java

In this post, we will see how to fix "illegal start of expression" in java. You will get this error while using javac command in command prompt. In eclipse or any other ide, it will give you more helpful compile time error. There can be multiple reasons for getting this error. Using private, public or […]

In this post, we will see how to find number of words in a String. Problem Find the number of words in a String. For example: There are 6 words in below String welcome to java tutorial on Java2blog Algorithm The algorithm will be very simple. Initialize count with 1 as if there are no […]

In this post, we will see about java.util.function.Function functional interface. java.util.function.Function is part of java.util.function package. There are some inbuilt functional interfaces in java.util.function which you can use if functional interface matches with your requirement. java.util.function.Function is a functional interface which takes input single argument T and returns result R. It has an abstract method as below. […]

Správne vykonanie prvého výberu je skutočným testom každej iGaming platformy – táto príručka vám ukáže, ako ním prejsť. Bet365 patrí medzi najznámejšie značky v odvetví a jej slovenská verzia ponúka širokú škálu hier a stávok. Aby ste si výhru užili bez zbytočných komplikácií, pripravili sme pre vás prehľadný návod. Getting Ready Overte si vek – […]

In this post, we will see about Java 8 Stream‘s of method example. stream‘s of method is static method and used to create stream of given type. For example: [crayon-6a29e5ecce896311083824/] There are two overloaded version of Stream’s of method. 1) static <T> Stream<T> of(T… values) Returns a sequential ordered stream whose elements are the specified values. […]

In this post, we will see how to collect any Java 8 Stream to array. There are many ways to do it but I am going to show easiest way. You can simply use toArray(IntFunction<A[]> generator).This generator function takes size as input and creates new array of that size. Convert Steam to Array Let’s understand […]

In this post, we will see the difference between map and flatMap in java.I have already covered Stream’s map and flatMap methods  in previous articles. As you might know, Stream’s map and flatMap method both can be applied on Stream<T> and return Stream<R> as output. The actual difference is, map operation produces one output value […]

In this post, we will see about Java 8 Stream flatMap function.Before understanding flatMap, you should go through stream’s map function Stream‘s flatMap method takes single element from input stream and produces any number of output values and flattens result to output stream.When you apply flatMap function on each of element of the stream, it results in […]

In this post, we will see about Java 8 Stream map function. stream‘s map method takes single element from input stream and produces single element to output stream. Type of Single input Stream and Output stream can differ. Java 8 Stream Map function [crayon-6a29e5ecd0660109661290/] Map function returns a stream consisting of the results of applying […]