A literal is a source code representation of a fixed value. They are represented directly in the code without any computation. Literals can be assigned to any primitive type variable. Example byte a = 68; char a = 'A' byte, int, long, and short can be expressed in decimal(base 10), hexadecimal(base 16) or octal(base 8) number systems as well. Prefix 0 is used to indicate octal, and prefix 0x indicates hexadecimal when using these number systems for literals. For example − int decimal = 100; int octal = 0144; int hexa = 0x64; String ... Read More

Data types are those which specify the type of data represented by the variable and literal is the that is stored in to the variable. A literal is a source code representation of a fixed value. They are represented directly in the code without any computation. Literals can be assigned to any primitive type variable. Example byte a = 68; char a = 'A'

Reference datatypes in java are those which contains reference/address of dynamically created objects. These are not predefined like primitive data types. Following are the reference types in Java. class types − This reference type points to an object of a class. array types − This reference type points to an array. interface types − This reference type points to an object of a class which implements an interface. Once we create a variable of these types (i.e. when we create an array or object, class or interface). These variables only store the address of these values. Default ... Read More

Reference datatypes in java are those which contains reference/address of dynamically created objects. These are not predefined like primitive data types. Following are the reference types in Java. class types − This reference type points to an object of a class. array types − This reference type points to an array. interface types − This reference type points to an object of a class which implements an interface. Once we create a variable of these types (i.e. when we create an array or object, class or interface). These variables only store the address of these values. Default ... Read More

In the realm of Python programming, text manipulation, and pattern matching are tasks that programmers frequently encounter across various applications. Python, known for its versatility and power, provides numerous tools and modules that facilitate string operations and pattern matching. Among these essential tools lies the match() function, a part of the ‘re’ module in Python, which grants developers the ability to conduct pattern matching using regular expressions, thereby offering a robust means of searching for patterns specifically at the beginning of strings. This comprehensive article aims to explore the match() function, elucidating its purpose, usage, and practical code examples replete ... Read More

Whenever we try to sort elements with null values using the sort method it throws an exception.The sort() method of the Arrays class also accepts a Comparator along with the array. Using comparator, you need to specify the order in which the elements need to be sorted.Using this method push all the null elements to last and sort the elements −Example Live Demoimport java.util.Arrays; import java.util.Comparator; public class ArrayWithNullsInOrder { public static void main(String args[]) { String[] myArray = {"JavaFX", null, "OpenCV", null, "Hadoop", null}; Arrays.sort(myArray, Comparator.nullsLast(String.CASE_INSENSITIVE_ORDER)); System.out.println(Arrays.toString(myArray)); } }Output[Hadoop, JavaFX, OpenCV, null, null, null]Read More

To sort a String array in Java, you need to compare each element of the array to all the remaining elements, if the result is greater than 0, swap them.One solution to do so you need to use two loops (nested) where the inner loop starts with i+1 (where i is the variable of outer loop) to avoid repetitions in comparison.ExampleLive Demoimport java.util.Arrays; public class StringArrayInOrder {    public static void main(String args[]) {       String[] myArray = {"JavaFX", "HBase", "OpenCV", "Java", "Hadoop", "Neo4j"};       int size = myArray.length;       for(int i = 0; i

To sort an array in Java, you need to compare each element of the array to all the remaining elements and verify whether it is greater if so swap them.One solution to do so you need to use two loops (nested) where the inner loop starts with i+1 (where i is the variable of outer loop) to avoid repetitions in comparison.Exampleimport java.util.Arrays; import java.util.Scanner; public class ArrayInOrder {    public static void main(String args[]) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter the size of the array that is to be created::");     ... Read More

To sort an array in Java, you need to compare each element of the array to all the remaining elements and verify whether it is greater if so swap them.One solution to do so you need to use two loops (nested) where the inner loop starts with i+1 (where i is the variable of outer loop) to avoid repetitions in comparison.Example Live Demoimport java.util.Arrays; import java.util.Scanner; public class ArrayInOrder {    public static void main(String args[]) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter the size of the array that is to be created::");   ... Read More

You can convert a double array to a string using the toString() method. To convert a double array to a string array, convert each element of it to string and populate the String array with them.ExampleLive Demoimport java.util.Arrays; public class DoubleArrayToString {    public static void main(String args[]) {       Double[] arr = {12.4, 35.2, 25.6, 98.7, 56.4};       int size = arr.length;       String[] str = new String[size];           for(int i=0; i