Questions Related To The Topic: Java

What is up casting in java?


Available Answers: 1


Answer 1: What are Upcasting and Downcasting in Java? Upcasting (Generalization or Widening) is casting to a parent type in simple....


What is niven number in java?


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Answer 1: Harshad Number : In recreational mathematics, a Harshad number (or Niven number), is an integer (in base 10) that is div....


How to iterate string in java?


Available Answers: 1


Answer 1: Example 1: Loop through each character of a string using for loop. class Main { public static void main(String[] args) {....


What is garbage collection in java?


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Answer 1: Java garbage collection is the process by which Java programs perform automatic memory management. Garbage Collection in....


What is jws in java?


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Answer 1: The Java Web Start software allows you to download and run Java applications from the web. In computing, Java Web Start ....


What is class in java?


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Answer 1: Java Classes/Objects, Java is an object-oriented programming language. A class is a user defined blueprint or prototype ....


What is jdialog in java?


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Answer 1: The JDialog class is a subclass of the AWT java. JDialog is a part Java swing package. Java JDialog example with topics ....


What is xuggle in java?


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Answer 1: Xuggler is the easy way to uncompress, modify, and re-compress any media file (or stream) from Java. Xuggler is the easy....


What is rmi registry in java?


Available Answers: 1


Answer 1: A remote object registry is a bootstrap naming service that is used by RMI servers on the same host to bind remote objec....


What is jpanel in java?


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Answer 1: JPanel, a part of Java Swing package, is a container that can store a group of components. The JPanel is a simplest cont....


What is hashtable in java?


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Answer 1: Hashtable was part of the original java. Hashtable in Java · It is similar to HashMap, but is synchronised. This class ....


What is list in java?


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Answer 1: List in Java provides the facility to maintain the ordered collection. List Interface in Java with Examples. The List in....


What is dwr in java?


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Answer 1: DWR, or Direct Web Remoting, is a Java open-source library that helps developers write web sites that include Ajax techn....


What is jna in java?


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Answer 1: Java Native Access is a community-developed library that provides Java programs easy access to native shared libraries w....


What is jrxml in java?


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Answer 1: JasperReport is a popular reporting tool used by the Java programmer. JasperReports - Designs - The JRXML templates (or ....


What is enumeration in java?


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Answer 1: Enumeration means a list of named constant. Java - The Enumeration Interface - The Enumeration interface defines the met....


What is hashing in java?


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Answer 1: A hash code is an integer value that is associated with each object in Java. What is hashing? Hashing means using some f....


What is scjp and ocjp in java?


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Answer 1: SCJP and OCJP are referring to the same exams. Sun Certified Java Programmer (SCJP) and Oracle Certified Java Programmer....


What is pmd in java?


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Answer 1: PMD(Programming Mistake Detector) is an open source static source code analyzer that reports on issues found within appl....


What is xjc in java?


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Answer 1: XJC is a Java SE tool that compiles an XML schema file into fully annotated Java classes. As nearly every Java developer....


What is interface in java?


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Answer 1: Another way to achieve abstraction in Java, is with interfaces. An interface in the Java programming language is an abst....


What is rpc call in java?


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Answer 1: Remote Procedure Call (RPC) is a inter process communication which allows calling a function in another process residing....


What is rvalue and lvalue in java?


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Answer 1: An lvalue refers to an object that persists beyond a single expression. lvalue = rvalue ; lvalue is short for "left valu....


How to create p tag in javascript?


Available Answers: 2


Answer 1: Create a element with some text, use innerText to set the text, and append it to the document: var para = document.crea....


Answer 2: The tag defines a paragraph. Browsers automatically add a single blank line before and after each element.....


What is jdk in java?


Available Answers: 1


Answer 1: The Java Development Kit is an implementation of either one of the Java Platform, Standard Edition, Java Platform, Enter....


What is orphaned case in java?


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Answer 1: Orphaned Case Error in Java is one of the rarest errors you can see in Java. You ran into multiple problems here. An orp....


What is jre in java?


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Answer 1: JRE – Java Runtime Environment (to say JRE) is an installation package which provides environment to only run(not deve....


What are the benefits of inheritance in java?


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Answer 1: Inheritance allows us to reuse of code, it improves reusability in your java application. Note: The biggest advantage of....


What is jvm in java?


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Answer 1: A Java virtual machine is a virtual machine that enables a computer to run Java programs as well as programs written in ....


What does dom mean javascript?


Available Answers: 2


Answer 1: The Document Object Model is a cross-platform and language-independent interface that treats an XML or HTML document as ....


Answer 2: The Document Object Model (DOM) is a programming interface for HTML and XML documents. It represents the page so that pr....


How to navigate to another page in selenium webdriver java?


Available Answers: 1


Answer 1: Selenium WebDriver - Navigation CommandsNavigate To Command. Method: to(String arg0) : void. to(String arg0) : void. . F....


What is jshell in java?


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Answer 1: The Java Shell tool (JShell) is an interactive tool for learning the Java programming language and prototyping Java code....


What is token in java?


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Answer 1: In Java, a program is a collection of classes and methods, while methods are a collection of various expressions and sta....


How to convert km to m in java?


Available Answers: 1


Answer 1: The program gets the kilometer value from the user and store it in the variable. Then it is dividing the kilometer value....


How to inherit abstract class in java?


Available Answers: 3


Answer 1: — 3) In Java, we can have an abstract class without any abstract method. This allows us to create classes that cannot ....


Answer 2: An abstract class can have abstract and non-abstract (concrete) methods and can't be instantiated with inheritance, poly....


Answer 3: 3) In Java, we can have an abstract class without any abstract method. This allows us to create classes that cannot be i....


How to print m pattern in java?


Available Answers: 4


Answer 1: — Given any alphabet between A to Z, the task is to print the pattern of the given alphabet using star. Examples: . C+....


Answer 2: — package quora; · import Java.io.*; · import java.util.Scanner; · import java.lang.Math; · public class Quora { ....


Answer 3: M Pattern Example Program. import java.util.Scanner; class StarPatternExample { public static void main(String[] args) {....


Answer 4: — 13. Square Pattern Programs in Java. import java.io.*;. class JigSawAcademy{. //print hollow rectangle. static void ....


How to refresh ehcache in java?


Available Answers: 1


Answer 1: Plug In EhCache Spring AnnotationsStep 1: Update Dependencies to use EhCache Spring Annotations. Add the EhCache Spring ....


What is i/o exception in java?


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Answer 1: Java IOExceptions are Input/Output exceptions (I/O), and they occur whenever an input or output operation is failed or i....


How to call ctrl p in javascript?


Available Answers: 1


Answer 1: How to use the Ctrl+P keyboard shortcut. To use this keyboard shortcut, press and hold either Ctrl key, and while contin....


What is jse in java?


Available Answers: 1


Answer 1: Java Platform, Standard Edition (Java SE) is a computing platform for development and deployment of portable code for de....


What is bubble sort in java?


Available Answers: 1


Answer 1: Bubble Sort is the simplest sorting algorithm that works by repeatedly swapping the adjacent elements if they are in wro....


What is jfx in java?


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Answer 1: JavaFX is a set of graphics and media packages that enables developers to design, create, test, debug, and deploy rich c....


What is classpath in java?


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Answer 1: Classpath is a parameter in the Java Virtual Machine or the Java compiler that specifies the location of user-defined cl....


How to iterate arraylist in java?


Available Answers: 2


Answer 1: — The forEach() method of ArrayList used to perform the certain operation for each element in ArrayList. This method t....


Answer 2: The iterator can be used to iterate through the ArrayList wherein the iterator is the implementation of the Iterator int....


How to parse json object in java?


Available Answers: 2


Answer 1: — JSON can represent two structured types: objects and arrays. An object is an unordered collection of zero or more na....


Answer 2: First, we need to convert the JSON string into a JSON Object, using JSONObject class. Also, note that “pageInfo” is ....


What is variable in java?


Available Answers: 1


Answer 1: Variables are containers for storing data values. Variable is a name of memory location. Variables in Java · The value ....


What is obfuscation in java?


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Answer 1: Bytecode Obfuscation is the process of modifying Java bytecode (executable or library) so that it is much harder to read....


Where is the java sea located?


Available Answers: 1


Answer 1: Indonesia....


How to iterate a list in java?


Available Answers: 3


Answer 1: — There are 7 ways you can iterate through List. · Simple For loop · Enhanced For loop · Iterator · ListIterator ....


Answer 2: Basic for Loop · import java.util.*; · public class IterateListExample1 · { · public static void main(String args[])....


Answer 3: There are 7 ways you can iterate through List.Simple For loop.Enhanced For loop.Iterator.ListIterator.While loop.Iterabl....


What is jmf in java?


Available Answers: 1


Answer 1: The Java Media Framework API (JMF) enables audio, video and other time-based media to be added to applications and apple....


How to create r.java file in android studio?


Available Answers: 1


Answer 1: Go to File → Settings → Editor → Auto Import and at java tab you should have: Insert imports on paste: ASK. If you....


What is map in java?


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Answer 1: A Map is an object that maps keys to values. A map contains values on the basis of key, i. The Map interface present in ....


How to use pi java?


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Answer 1: An Exampleimport java. lang. Math. *;public class Pie {public static void main(String[] args) {//radius and length.doubl....


What is mybatis in java?


Available Answers: 1


Answer 1: MyBatis is a Java persistence framework that couples objects with stored procedures or SQL statements using an XML descr....


How to use xwpfdocument in java?


Available Answers: 2


Answer 1: Get thumbnail of word in java using Apache POI with XWPF. XWPFDocument wordDocument = new XWPFDocument(new FileInputStre....


Answer 2: Let us now proceed with the steps to install Apache POI.Step 1: Verify your Java Installation. First of all, you need to....


What is a javascript framework?


Available Answers: 3


Answer 1: A JavaScript library is a library of pre-written JavaScript that allows for easier development of JavaScript-based appli....


Answer 2: At their most basic, JS frameworks are collections of JavaScript code libraries (see below) that provide developers with....


Answer 3: Houses also rely on frameworks as a skeleton for the overall support and shape of an outer framing. Software frameworks ....


Where is javascript in chrome?


Available Answers: 1


Answer 1: Activate JavaScript in Google ChromeOn your computer, open Chrome.At the top right, click More. Settings.Click Privacy a....


How to use jxl in java?


Available Answers: 2


Answer 1: — To use this library in your Java program add the lib jxl.jar to your . Create the de.vogella.java.excel.writer packa....


Answer 2: A: To include JExcelAPI when compiling source code and running an application, do one of the following:Add the jexcelapi....


What is argument in java?


Available Answers: 1


Answer 1: All arguments to methods in Java are pass-by-value. A parameter is a variable used to define a particular value during a....


How to use jssc java?


Available Answers: 2


Answer 1: java-simple-serial-connector - jSSC_examples.wiki. jSSC-0.7 examples . But we will not report on all events but only * t....


Answer 2: jSSC - java serial port communication library.....


How to use pbkdf2 in java?


Available Answers: 2


Answer 1: 2 answers — Note that PBKDF2 is a hashing-method rather than an encryption-method (to be precise: it is a method to d....


Answer 2: Implementing PBKDF2 in Java. Now, salts are a fundamental principle of password hashing, and so we need one for PBKDF2, ....


How to disable jtextfield in java?


Available Answers: 1


Answer 1: TextField are editable by default. The code setEditable(false) makes the TextField uneditable. It is still selectable an....


What is runnable interface in java?


Available Answers: 1


Answer 1: The Runnable interface should be implemented by any class whose instances are intended to be executed by a thread. Runna....


How to get gmt time in java?


Available Answers: 1


Answer 1: If you're west of the Prime Meridian, your GMT will be ahead of, or minus, the time at the Prime Meridian. If you are ea....


What is yaml file in java?


Available Answers: 1


Answer 1: What is YAML? YAML is a human friendly data serialization. YAML is a simple, human-readable data-serialization language,....


What is utf-8 encoding in java?


Available Answers: 1


Answer 1: UTF-8 is a variable width character encoding. 5 days ago · Learn how to encode a Java String to the UTF-8 character set....


How to get utc time in java?


Available Answers: 2


Answer 1: — SimpleDateFormat f = new SimpleDateFormat("yyyy-MMM-dd HH:mm:ss"); f.setTimeZone(TimeZone.getTimeZone("UTC")); Syste....


Answer 2: How to get Current UTC Time:Current UTC Time – SimpleDateFormat: private static Date getCurrentUtcTime() throws ParseE....


How to sort arraylist in java?


Available Answers: 2


Answer 1: — Approach: An ArrayList can be Sorted by using the sort() method of the Collections Class in Java. This sort() method....


Answer 2: To sort the ArrayList, you need to simply call the Collections. sort() method passing the ArrayList object populated wit....


How to dynamically allocate memory for array in java?


Available Answers: 1


Answer 1: First, you must declare a variable of the desired array type. Second, you must allocate the memory that will hold the ar....


What are the benefits of input statement in java?


Available Answers: 1


Answer 1: What is the advantage of learning input statement? Well, it allows you to read in command line input. However, I wouldn'....


How to use pojo class in java?


Available Answers: 2


Answer 1: //Using POJO class objects in MainClass Java program · package Jtp.PojoDemo; · public class MainClass { · public stat....


Answer 2: POJO stands for Plain Old Java Object. It is an ordinary Java object, not bound by any special restriction other than th....


How to eclipse java?


Available Answers: 2


Answer 1: — The following section describes how to create a minimal Java application using the Eclipse IDE. 6.1. Create project.....


Answer 2: Eclipse for JavaEclipse Versions. The various versions are: . Step 0: Install JDK. To use Eclipse for Java programming, ....


What is jvm and jre and jdk in java?


Available Answers: 1


Answer 1: JDK includes both JVM and JRE and is entirely responsible for code execution. JRE – Java Runtime Environment (to say J....


How to use b tag in javascript?


Available Answers: 1


Answer 1: Hear this out loudPauseTo create a bold text using JavaScript, use the bold() text. This method causes a string to be di....


How to use java?


Available Answers: 1


Answer 1: The basic steps to create the Hello World program are: write the program in Java, compile the source code, and run the p....


What is xssfworkbook in java?


Available Answers: 1


Answer 1: Maybe the character behind your 99999 is not a default white space but some other horizontal white-space character, like....


What is jdeps in java?


Available Answers: 1


Answer 1: The jdeps command shows the package-level or class-level dependencies of Java class files. JDeps is a dependency analysi....


How to round off numbers in java?


Available Answers: 1


Answer 1: — The java.lang.Math.round() is a built-in math function which returns the closest long to the argument. The result is....


What is upcasting and downcasting in java?


Available Answers: 1


Answer 1: Upcasting (Generalization or Widening) is casting to a parent type in simple words casting individual type to one common....


What is method in java?


Available Answers: 1


Answer 1: ❮ Previous Next ❯ A method is a block of code which only runs when it is called. ❮ Previous Next ❯ A method is a....


What is jni in java?


Available Answers: 1


Answer 1: In software design, the Java Native Interface is a foreign function interface programming framework that enables Java co....


How to code java?


Available Answers: 1


Answer 1: The basic steps to create the Hello World program are: write the program in Java, compile the source code, and run the p....


How to do xnor in java?


Available Answers: 1


Answer 1: let a = 10, b = 50; document. write(xnor(a, b)); // This code is contributed by susmitakundugoaldanga.Second Method:- O(....


What are the benefits of java?


Available Answers: 2


Answer 1: — Java is straightforward to use, write, compile, debug, and learn than alternative programming languages. Java is les....


Answer 2: Advantages of JavaJava is easy to learn. Java was designed to be easy to use and is therefore easy to write, compile, de....


What is uuid in java?


Available Answers: 1


Answer 1: A class that represents an immutable universally unique identifier (UUID). Java UUID is made up of hex digit along with ....


Where is the java jazz festival?


Available Answers: 3


Answer 1: Jakarta International Java Jazz Festival is one of the largest jazz festivals in the world and arguably the biggest in t....


Answer 2: One of the largest jazz festivals in the world. . Past Lineup. The lineup of Jakarta International BNI Java Jazz Festiva....


Answer 3: Jakarta International Java Jazz festival 2022 . Jakarta, the capital of Indonesia, which is located on the main island, ....


How to avoid npe in java?


Available Answers: 2


Answer 1: — We can use the ternary operator to avoid java.lang.NullPointerException. The ternary operator has three operators. T....


Answer 2: Hear this out loudPauseTo avoid the NullPointerException, we must ensure that all the objects are initialized properly, ....


How to set xmx and xms in java?


Available Answers: 3


Answer 1: 6 answers — The flag Xmx specifies the maximum memory allocation pool for a Java Virtual Machine (JVM), while Xms spe....


Answer 2: — -Xms size in bytes Sets the initial size of the Java heap. The default size is 2097152 (2MB). The values must be a m....


Answer 3: The short answer is that you use these Java command-line parameters to help control the RAM use of application:Use -Xmx ....


What is try block in java?


Available Answers: 1


Answer 1: The try block contains set of statements where an exception can occur. Java try block is used to enclose the code that m....


How to square in java?


Available Answers: 1


Answer 1: Java: How to square a number1) Square a number by multiplying it by itself. This is how you square a number by multiplyi....


What are the advantages of autoboxing and unboxing in java?


Available Answers: 2


Answer 1: Advantage of Autoboxing and Unboxing: · No need of conversion between primitives and Wrappers manually so less coding i....


Answer 2: Advantages of Autoboxing / Unboxing:Autoboxing and unboxing lets developers write cleaner code, making it easier to read....


What is thread safe in java?


Available Answers: 1


Answer 1: thread-safety or thread-safe code in Java refers to code which can safely be used or shared in concurrent or multi-threa....


What is ftl in java?


Available Answers: 1


Answer 1: Templates are written in the FreeMarker Template Language (FTL), which is a simple, specialized language (not a full-blo....


What is xms and xmx in java?


Available Answers: 1


Answer 1: The flag Xmx specifies the maximum memory allocation pool for a Java virtual machine (JVM), while Xms specifies the init....


How to byte array to string in java?


Available Answers: 3


Answer 1: — How to convert byte[] array to String in Java . In Java, we can use new String(bytes, StandardCharsets.UTF_8) to con....


Answer 2: This post will discuss how to convert a byte array to string in Java. We know that a string store textual data in Java, ....


Answer 3: By using String Class Constructorpublic class ByteArraytoStringExample.{public static void main(String args[]){try.{byte....


What is jml in java?


Available Answers: 1


Answer 1: The Java Modeling Language (JML) is a specification language for Java programs, using Hoare style pre- and postcondition....


How to implement k means clustering in java?


Available Answers: 2


Answer 1: IOException; import java.util.*; public class KMeans { // Data members private Gene[] genes; // Array of all genes in da....


Answer 2: How does the K-Means Algorithm Work?Step-1: Select the number K to decide the number of clusters.Step-2: Select random K....


What is stl in java?


Available Answers: 1


Answer 1: Both C++ and Java have libraries that let us implement common data structures. What happens with t[21] on a 21-element v....


What is byte code in java?


Available Answers: 1


Answer 1: Java bytecode is the instruction set for the Java Virtual Machine. While the bytecode is a non-runnable code generated b....


What is fxml in java?


Available Answers: 1


Answer 1: This tutorial shows the benefits of using JavaFX FXML, which is an XML-based. From a Model View Controller (MVC) perspec....