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The clear() function of Map object removes all elements from the current Map object.SyntaxIts Syntax is as followsmapVar.clear()Example Live Demo JavaScript Example var mapVar = new Map(); mapVar.set('1', 'Java'); mapVar.set('2', 'JavaFX'); mapVar.set('3', 'HBase'); mapVar.set('4', 'Neo4j'); var map = mapVar.clear(); document.write("Size of the map object: "+mapVar.size); OutputSize of the map object: 0Example Live Demo JavaScript Example var mapVar = new Map(); ... Read More
A language can be easily learned by attempting the use of the things you see around, especially the phrases, which can help you improve your written as well as spoken English. The following Idioms belong to the word 'Blue’. Take a look!Blue-Sky (Fictitious)Usage − Blue sky thinking will yield nothing.Bluestocking (A Wise and Educated Lady)Usage − A bluestocking like her is not approved of by some men.Make Me Blue(Depressed, Melancholy)Usage − That music always makes me blue.Blue Jokes(Obscene, Vulgar, Dirty.)Those blue jokes don’t go over very well around here.Out of the Blue(The Sky, The Heavens)The idea came to me right out ... Read More
The delete() function of Map object accepts a string representing the key of an element of a map and deletes from the current Map object. This function returns true if the specified key exists in the map object else it returns false.SyntaxIts Syntax is as followsmapVar.delete()Example Live Demo JavaScript Example var mapVar = new Map(); mapVar.set('1', 'Java'); mapVar.set('2', 'JavaFX'); mapVar.set('3', 'HBase'); mapVar.set('4', 'Neo4j'); var map = mapVar.delete('4'); document.write("Size of the map object: "+mapVar.size); ... Read More
The byte array in Java can be filled by using the method java.util.Arrays.fill(). This method assigns the required byte value to the byte array in Java. The two parameters required for java.util.Arrays.fill() are the array name and the value that is to be stored in the array elements.A program that demonstrates this is given as follows −Example Live Demoimport java.util.Arrays; public class Demo { public static void main(String[] a) { byte arr[] = new byte[] {5, 1, 9, 2, 6}; System.out.print("Byte array elements are: "); for (int num : arr) { ... Read More
The entries() function of Map object returns an iterator of the corresponding Map object and using this you can retrieve the key Value pairs of the map.SyntaxIts Syntax is as followsmapVar.entries()Example Live Demo JavaScript Example var mapVar = new Map(); mapVar.set('1', 'Java'); mapVar.set('2', 'JavaFX'); mapVar.set('3', 'HBase'); mapVar.set('4', 'Neo4j'); var it = mapVar.entries(); for(i=0; i
Despite being awarded as the best messaging service and knowns as the top and advanced option for your business for chat and email, Slack lacks somewhere. Whether its pocket-drilling price or the functionality gaps it could not overcome yet. Therefore, most of the businesses are looking for its alternatives and these, the ones I feel can replace this chat service.Google HangoutIs the cheapest and hustle-free tool for your team to get in touch with each other. The plenty of instant messaging capabilities like being handy, easy to integrate, and being free put it at the top of the rest.Rocket.ChatThis Brazil-based ... Read More
The forEach() function of Map object returns an iterator of the corresponding Map object and using this you can retrieve the key Value pairs of the map.SyntaxIts Syntax is as followsmapVar.forEach()Example Live Demo JavaScript Example var mapVar = new Map(); mapVar.set('1', 'Java'); mapVar.set('2', 'JavaFX'); mapVar.set('3', 'HBase'); mapVar.set('4', 'Neo4j'); function show(values) { document.write(values); document.write(""); } mapVar.forEach(show); OutputJava JavaFX HBase Neo4j
An array can be initialized using the method java.util.Arrays.fill() that is a utility method provided in the java.util.Arrays class. This method assigns the required value to all the elements in the array or to all the elements in the specified range.A program that demonstrates this is given as follows −Example Live Demoimport java.util.Arrays; public class Demo { public static void main(String[] arg) { int[] arr = {2, 5, 8, 1, 9}; System.out.print("The array elements are: "); for (int i = 0; i < arr.length; i++) { System.out.print(arr[i] ... Read More
The get() function of Map object accepts a key in string format and returns its respective value.SyntaxIts Syntax is as followsmapVar.get()Example Live Demo JavaScript Example var mapVar = new Map(); mapVar.set('1', 'Java'); mapVar.set('2', 'JavaFX'); mapVar.set('3', 'HBase'); mapVar.set('4', 'Neo4j'); document.write(mapVar.get('3')); OutputHBase
A new instance of an Array can be created using the java.lang.reflect.Array.newInstance() method. This method basically creates a new array with the required component type as well as length.A program that demonstrates the creation of an array using the Array.newInstance() method is given as follows −Example Live Demoimport java.lang.reflect.Array; public class Demo { public static void main (String args[]) { int arr[] = (int[])Array.newInstance(int.class, 5); Array.set(arr, 0, 5); Array.set(arr, 1, 1); Array.set(arr, 2, 9); Array.set(arr, 3, 3); Array.set(arr, 4, 7); ... Read More