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Elements can be filled in a byte array using the java.util.Arrays.fill() method. This method assigns the required byte value to the byte array in Java. The two parameters required 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[] argv) throws Exception { byte[] byteArray = new byte[5]; byte byteValue = 5; Arrays.fill(byteArray, byteValue); System.out.println("The byte array content is: " + Arrays.toString(byteArray)); ... Read More
The keys() function of Map object is similar to entries but, it returns an iterator object containing the keys of a map object.SyntaxIts Syntax is as followsMap.keys()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.keys(); for(i=0; i
The getName() method is used to get the names of the entities such as primitive type, interface, class, array class, void etc. that represented by the class objects. These names are returned in the form of a string.A program that gets the name of a primitive type using getName() method is given as follows -Example Live Demopublic class Demo { public static void main(String[] argv) throws Exception { String name1 = float.class.getName(); System.out.println(name1); String name2 = int.class.getName(); System.out.println(name2); String name3 = char.class.getName(); ... Read More
The methods of a class can be listed using the java.lang.Class.getDeclaredMethods() method. This method returns an array that contains all the Method objects with public, private, protected and default access. However, the inherited methods are not included.Also, the getDeclaredMethods() method returns a zero length array if the class or interface has no methods or if a primitive type, array class or void is represented in the Class object.A program that demonstrates this is given as follows −Example Live Demoimport java.lang.reflect.*; public class Demo { public static void main(String[] args) { Class c = Thread.class; ... Read More
The methods of the java.lang.Math class can be listed using the java.lang.Class.getDeclaredMethods() method. This method returns an array that contains all the Method objects with public, private, protected and default access. However, the inherited methods are not included. Also, the getDeclaredMethods() method returns a zero length array if the class or interface has no methods or if a primitive type, array class or void is represented in the Class object.A program that demonstrates this is given as follows −Example Live Demoimport java.lang.reflect.Method; public class Demo { public static void main(final String[] args) { final Method[] methods = Math.class.getDeclaredMethods(); ... Read More
In order to generate Random double type numbers in Java, we use the nextDouble() method of the java.util.Random class. This returns the next random double value between 0.0 (inclusive) and 1.0 (exclusive) from the random generator sequence.Declaration - The java.util.Random.nextDouble() method is declared as follows −public float nextDouble()Let us see a program to generate random double type numbers in Java −Example Live Demoimport java.util.Random; public class Example { public static void main(String[] args) { Random rd = new Random(); // creating Random object System.out.println(rd.nextDouble()); // displaying a random double value between 0.0 & 1.0 ... Read More
Elements can be filled in an int array using the java.util.Arrays.fill() method. This method assigns the required int value to the int array in Java. The two parameters required 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[] argv) throws Exception { int[] intArray = new int[5]; int intValue = 9; Arrays.fill(intArray, intValue); System.out.println("The int array content is: " + Arrays.toString(intArray)); ... Read More
If the sum of the digits of a number is divisible by 3, then the number is divisible by 3.Some examples of numbers divisible by 3 are as follows.The number 85203 is divisible by 3 because the sum of its digits (8 + 5 + 2 + 0 + 3 = 18) is divisible by 3.The number 79154 is not divisible by 3 because the sum of its digits (7 + 9 + 1 + 5 + 4 = 26) is not divisible by 3.Programimport java.util.Scanner; public class DivisibleBy3 { public static void main(String args[]) { Scanner sc = new Scanner(System.in); System.out.println("Enter a number :"); String num = sc.nextLine(); int digitSum = 0; for(int i = 0; i
The methods of an object can be called using the java.lang.Class.getDeclaredMethods() method. This method returns an array that contains all the Method objects with public, private, protected and default access. However, the inherited methods are not included.Also, the getDeclaredMethods() method returns a zero length array if the class or interface has no methods or if a primitive type, array class or void is represented in the Class object.A program that demonstrates this is given as follows −Example Live Demoimport java.lang.reflect.Method; class ClassA { private String name = "John"; public String returnName() { return name; } ... Read More
Chatbots − Little bots can answer questions and give information based on queries in natural written language. It is also possible to place orders with them. Many companies already use chatbots. Among them are Uber, Sephora, KLM, and Whole Foods.Microblogging − Short message postings from a social media account. Facebook statuses and Twitter posts are two examples.Tweeps − Twitter + People = Tweople. Twitterati is also used for Twitter users.Meme − A means of taking viral concepts and making them everyday lingo.User-Generated-Content (UGC) − An article describes UGC as being Latin for "crap" which is, quite frankly, well-put. UGC is ... Read More