Java - Methods
Categories: Java 8(JDK1.8) ||
A Java method is a collection of statements that are grouped together to perform an operation. When you call the System.out.println() method, for example, the system actually executes several statemen
-
-
Java - Regular Expressions
Categories: Java 8(JDK1.8) ||
Java provides the java.util.regex package for pattern matching with regular expressions. Java regular expressions are very similar to the Perl programming language and very easy to learn.A regular exp
-
Gregorian Calendar Class
Categories: Java 8(JDK1.8) ||
GregorianCalendar is a concrete implementation of a Calendar class that implements the normal Gregorian calendar with which you are familiar. We did not discuss Calendar class in this tutorial, you ca
-
Sleeping for a While
Categories: Java 8(JDK1.8) ||
You can sleep for any period of time from one millisecond up to the lifetime of your computer. For example, the following program would sleep for 3 seconds.Exampleimport java.util.*;public class Sleep
-
Simple DateFormat Format Codes
Categories: Java 8(JDK1.8) ||
To specify the time format, use a time pattern string. In this pattern, all ASCII letters are reserved as pattern letters, which are defined as the following −CharacterDescriptionExampleGEra designa
-
Date Comparison
Categories: Java 8(JDK1.8) ||
Following are the three ways to compare two dates −You can use getTime( ) to obtain the number of milliseconds that have elapsed since midnight, January 1, 1970, for both objects and then compare th
-
Getting Current Date and Time
Categories: Java 8(JDK1.8) ||
This is a very easy method to get current date and time in Java. You can use a simple Date object with toString() method to print the current date and time as follows −Exampleimport java.util.Date;p
-
Java - Date and Time
Categories: Java 8(JDK1.8) ||
Java provides the Date class available in java.util package, this class encapsulates the current date and time.The Date class supports two constructors as shown in the following table.Sr.No.Constructo
-
Creating Arrays In Java
Categories: Java 8(JDK1.8) ||
You can create an array by using the new operator with the following syntax −SyntaxarrayRefVar = new dataType[arraySize];The above statement does two things −It creates an array using new dataType
-
Java - Arrays
Categories: Java 8(JDK1.8) ||
Java provides a data structure, the array, which stores a fixed-size sequential collection of elements of the same type. An array is used to store a collection of data, but it is often more useful to
-
Creating Format Strings In Java
Categories: Java 8(JDK1.8) ||
You have printf() and format() methods to print output with formatted numbers. The String class has an equivalent class method, format(), that returns a String object rather than a PrintStream object.
-
Concatenating Strings In Java
Categories: Java 8(JDK1.8) ||
The String class includes a method for concatenating two strings −string1.concat(string2);This returns a new string that is string1 with string2 added to it at the end. You can also use the concat()
-
String Length In Java
Categories: Java 8(JDK1.8) ||
Methods used to obtain information about an object are known as accessor methods. One accessor method that you can use with strings is the length() method, which returns the number of characters conta
-
Java In Strings Class
Categories: Java 8(JDK1.8) ||
Strings, which are widely used in Java programming, are a sequence of characters. In Java programming language, strings are treated as objects.The Java platform provides the String class to create and
-
Character Methods In Java
Categories: Java 8(JDK1.8) ||
Following is the list of the important instance methods that all the subclasses of the Character class implement −Sr.No. - Method & Description1.isLetter() - Determines whether the specified cha
-
Escape Sequences In Java
Categories: Java 8(JDK1.8) ||
A character preceded by a backslash (\) is an escape sequence and has a special meaning to the compiler.The newline character (\n) has been used frequently in this tutorial in System.out.println() sta
-
Java In Character Class
Categories: Java 8(JDK1.8) ||
Normally, when we work with characters, we use primitive data types char.Examplechar ch = 'a';// Unicode for uppercase Greek omega characterchar uniChar = '\u039A'; // an array of charschar[] cha
-
Java - Numbers Class
Categories: Java 8(JDK1.8) ||
Normally, when we work with Numbers, we use primitive data types such as byte, int, long, double, etc.Exampleint i = 5000;float gpa = 13.65f;double mask = 125;However, in development, we come across s
-
Java - Decision Making
Categories: Java 8(JDK1.8) ||
Decision making structures have one or more conditions to be evaluated or tested by the program, along with a statement or statements that are to be executed if the condition is determined to be true,
-
What’s New in Node v16? let's know
Categories: Node JS ||
What’s New in Node v16? let's know Introduction The latest major release Node v16.0.0 is out recently, and this version will soon be moved to the LTS status. The official Node doc
-
Node.js Interview Question for experienced 2022
Categories: Interview questions and answers || Experienced || Node JS ||
Node.js Interview Question for experienced 2022 Question: What is Node.js? Answer: Node.js is a very popular scripting language that is primarily used for server-side scripting requirem
-
Java - Loop Control
Categories: Java 8(JDK1.8) ||
There may be a situation when you need to execute a block of code several number of times. In general, statements are executed sequentially: The first statement in a function is executed first, follow
-
Precedence of Java Operators
Categories: Java 8(JDK1.8) ||
Operator precedence determines the grouping of terms in an expression. This affects how an expression is evaluated. Certain operators have higher precedence than others; for example, the multiplicatio
-
Miscellaneous Operators
Categories: Java 8(JDK1.8) ||
There are few other operators supported by Java Language.Conditional Operator ( ? : )Conditional operator is also known as the ternary operator. This operator consists of three operands and is used to
-
The Assignment Operators
Categories: Java 8(JDK1.8) ||
Following are the assignment operators supported by Java language −OperatorDescriptionExample=Simple assignment operator. Assigns values from right side operands to left side operand.C = A + B will
-
The Logical Operators
Categories: Java 8(JDK1.8) ||
The following table lists the logical operators −Assume Boolean variables A holds true and variable B holds false, then −OperatorDescriptionExample&& (logical and)Called Logical AND operat
-
The Bitwise Operators
Categories: Java 8(JDK1.8) ||
Java defines several bitwise operators, which can be applied to the integer types, long, int, short, char, and byte.OperatorDescriptionExample& (bitwise and)Binary AND Operator copies a bit to the
-
The Relational Operators
Categories: Java 8(JDK1.8) ||
There are following relational operators supported by Java language.Assume variable A holds 10 and variable B holds 20, then −Operator - Description -Example== (equal to)Checks if the values of two
-
Java - Basic Operators
Categories: Java 8(JDK1.8) ||
Java provides a rich set of operators to manipulate variables. We can divide all the Java operators into the following groups −1. Arithmetic Operators2. Relational Operators3. Bitwise Operators4. Lo
-
Java - Modifier Types
Categories: Java 8(JDK1.8) ||
Modifiers are keywords that you add to those definitions to change their meanings. Java language has a wide variety of modifiers, including the following −1. Java Access Modifiers2. Non Access Modif
-
Basic Datatypes In Java
Categories: Java 8(JDK1.8) ||
Variables are nothing but reserved memory locations to store values. This means that when you create a variable you reserve some space in the memory.Based on the data type of a variable, the operating
-
No argument Constructors
Categories: Java 8(JDK1.8) ||
As the name specifies the no argument constructors of Java does not accept any parameters instead, using these constructors the instance variables of a method will be initialized with fixed values for
-
Constructors
Categories: Java 8(JDK1.8) ||
A constructor initializes an object when it is created. It has the same name as its class and is syntactically similar to a method. However, constructors have no explicit return type.Typically, you wi
-
Java Package
Categories: Java 8(JDK1.8) ||
In simple words, it is a way of categorizing the classes and interfaces. When developing applications in Java, hundreds of classes and interfaces will be written, therefore categorizing these classes
-
Source File Declaration Rules
Categories: Java 8(JDK1.8) ||
As the last part of this section, let's now look into the source file declaration rules. These rules are essential when declaring classes, import statements and package statements in a source file.The
-
Classes in Java
Categories: Java 8(JDK1.8) ||
A class can contain any of the following variable types.Local variables − Variables defined inside methods, constructors or blocks are called local variables. The variable will be declared and initi
-
Object and Classes In Java
Categories: Java 8(JDK1.8) ||
Java is an Object-Oriented Language. As a language that has the Object-Oriented feature, Java supports the following fundamental concepts −1. Polymorphism2. Inheritance3. Encapsulation4. Abstraction
-
Inheritance
Categories: Java 8(JDK1.8) ||
In Java, classes can be derived from classes. Basically, if you need to create a new class and here is already a class that has some of the code you require, then it is possible to derive your new cla
-
Java Modifiers
Categories: Java 8(JDK1.8) ||
Like other languages, it is possible to modify classes, methods, etc., by using modifiers. There are two categories of modifiers −Access Modifiers − default, public , protected, privateNon-access
-
Java Identifiers
Categories: Java 8(JDK1.8) ||
All Java components require names. Names used for classes, variables, and methods are called identifiers.In Java, there are several points to remember about identifiers. They are as follows −All ide
-
Basic Syntax in Java
Categories: Java 8(JDK1.8) ||
When we consider a Java program, it can be defined as a collection of objects that communicate via invoking each other's methods. Let us now briefly look into what do class, object, methods, and insta
-
Popular Java Editors
Categories: Java 8(JDK1.8) ||
To write your Java programs, you will need a text editor. There are even more sophisticated IDEs available in the market. But for now, you can consider one of the following −Notepad − On Windows m
-
Local Environment Setup
Categories: Java 8(JDK1.8) ||
Local Environment SetupIf you are still willing to set up your environment for Java programming language, then this section guides you on how to download and set up Java on your machine. Following are
-
Tools You Will Need
Categories: Java 8(JDK1.8) ||
For performing the examples discussed in this tutorial, you will need a Pentium 200-MHz computer with a minimum of 64 MB of RAM (128 MB of RAM recommended).You will also need the following softwares â
-
History of Java
Categories: Java 8(JDK1.8) ||
James Gosling initiated Java language project in June 1991 for use in one of his many set-top box projects. The language, initially called ‘Oak’ after an oak tree that stood outside Gosling's offi
-
Java Explaination
Categories: Java 8(JDK1.8) ||
Java programming language was originally developed by Sun Microsystems which was initiated by James Gosling and released in 1995 as core component of Sun Microsystems' Java platform (Java 1.0 [J2SE]).
-
Applications of Java Programming
Categories: Java 8(JDK1.8) ||
The latest release of the Java Standard Edition is Java SE 8. With the advancement of Java and its widespread popularity, multiple configurations were built to suit various types of platforms. For exa
-
Java Programming in Python
Categories: Java 8(JDK1.8) ||
Just to give you a little excitement about Java programming, I'm going to give you a small conventional C Programming Hello World program, You can try it using Demo link.public class MyFirstJavaProgra
-
Why to Learn java Programming?
Categories: Java 9 ||
Java is a MUST for students and working professionals to become a great Software Engineer specially when they are working in Software Development Domain. I will list down some of the key advantages of
-
Meaning Of Java
Categories: Java 8(JDK1.8) ||
Java is a high-level programming language originally developed by Sun Microsystems and released in 1995. Java runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX.
Top Blogs
Discover Exciting Tongits Variations on GameZone Published at:- Best Mr Beast Casino App Published at:- Mr Beast Casino App Published at:- Free Billing Software for Small Businesses in India - The Ultimate Guide Published at:- Explore the Art of Baking with These Top Digital EBooks Published at:- The Influence of Slot Game Providers on Your Gaming Experience Published at:- Subset Sum Problem SubSet Sum Problem Solution using Knapsack Published at:- Knapsack top down dynamic programming using java Published at:- Sorting the Employees Salary in Each Department in Ascending Order Published at:- Sorting the Employees Salary in Each Department in Descending Order Published at:- Concatenate String array into single string Published at:- Find Customer staring with +91 mobile number Published at:- Child and Parent overridden methods Throws checked exception Published at:- Child and Parent overridden methods Throws RuntimeException Published at:- Java Class subclass interview coding questions Published at:- Printing the Number of Employees in Each Department using Java Published at:- Printing Average Age of Male and Female Employees using Java Published at:- Finding Maximum Age of Employee using Java Published at:- Printing Employee Details by Age Criteria using Java Published at:- Printing Names of All Departments from Employee Class using Java Published at:- Finding the Count of Male and Female Employees Published at:- Grouping Employees by City and Age Published at:- Employee Highest salary in each department using Java Published at:- Sort highest salary in each department Published at:- 5 Family Bonding Activities You Can Do Offline This -Ber Months Published at:- Find first repeated character in a string Published at:- Travel Tips for First-Time LRT Commuters Published at:- sum ,min ,max etc example using reduce method using Java 8 Stream API Published at:- Java 8 Stream String Null Or Empty Filter Published at:- 26 Java 8 Programs using Lambda Expression and Stream Published at:- java 8 using lambda expression and stream api | Java 8 Programs using Lambda Expression and Stream Published at:- Singleton Design Pattern and 7 Ways to Implement It 4 Ways to Break Singleton Design Pattern Published at:- The Legends of Manchester United: 10 Greatest Players in Manchester United History Published at:- Course on Computer Concepts (CCC) MCQs Published at:- Given a list of integers, separate odd and even numbers Published at:- Reports and Indices (MCQs) Published at:- Find Last duplicate character of given string using Java 8 Published at:- News Locations (MCQs) Published at:- Find duplicate elements with its count using Java 8 Published at:- How to check if list is empty in Java 8 using Optional Published at:- Write a Program to find the Maximum element in an array Published at:- count of each character in a String using Java 8 Published at:- How to print keys & values of a Map using Java 8 Published at:- How to iterate and modify values in a Map using Java 8 Published at:- How to find next, previous, tomorrow ,yesterday date using Java 8 Published at:- How to remove all duplicates from an array of integers in Java using Java 8 Published at:- How to count the number of occurrences of a given word in a list of strings using Java 8 Published at:- Write a Java program To create a map from a array of strings where the key is the string and the value is its length Published at:- How to filter and collect a list of strings that start with a specific letter using Java 8 Stream Published at:- How to sort a list of strings by length using Lambda expressions Published at:- Find the maximum value in a list of integers using Stream & Method Reference Published at:- Drop all while condition not meet dropWhile(),dropWhile(Predicate<T> predicate) Published at:- Write a program to sum an array Published at:- Write a program to sum an array without using the sum method Published at:- Write a program to append char in char ex-input- {A, B, C} output->[A_X, B_Y, C_Z] Published at:- Write a program to find the only duplicate count list in the List Published at:- How to increment salary by 2%, 5%, etc. Using java Published at:- Filter employees by age set senior if age is greater than 30 in Java 8 Lamda steam Published at:- Write a Java 8 program to get the last element of an array string/object Published at:- Filter employees by age in Java 8 Lamda steam Published at:- Write a Java 8 program to print the first 10 odd numbers Published at:- Write a Java 8 program to calculate the age of a person in years given their birthday Years Months Days Published at:- Write a Java 8 program to calculate the age of a person in years given their birthday Published at:- Write a program for group words by first character of given string | Java 8 Stream Example Published at:- Business, Economy & Banking (MCQs) Published at:- Varför ett Casino utan Svensk Licens Kan Erbjuda Större Bonusar: En Analys av Regleringsfria Spelmarknader Published at:- Can you explain how you would use Spring Boot to build a RESTful API for a project? Published at:- How do you schedule tasks in a Spring Boot application? Published at:- How do you handle exceptions in a Spring Boot application? Published at:- What is a Selector and Template Published at:- What are Components in Angular? Published at:- What is a CLI tool? Explain the importance of Angular CLI. Published at:- What are Angular advantages? Published at:- What is NPM(Node Package Manager) Published at:- How to check the angular version ? or Ways to find the angular version. Published at:- What is the difference between angular and angularjs? Published at:- What is angular Published at:- Decoding the Symbolism of Green in Highway Signage Published at:- The Ultimate Guide to the World's Best Dips Featuring Indian Chutneys Published at:- fizzbuzz problem java Published at:- pushing value at last in java | how to add element at the end of array in java Published at:- java toUpperCase() and toLowerCase() example Published at:- Scanner nextLine() ,nextInt() ,nextDouble() method in Java with Examples Published at:- Elevate Your Strategy: Top AI Tools Transforming Industries Published at:- IELTS Paraphrasing Published at:- Best practice for IELTS academic reading[IELTS 3 step strategy] Published at:- Does Watching Romantic Films Help Your Love Life? Published at:- Optimizing Remote Team Management with WorkTime Software Published at:- How to Plan the Perfect Mother's Day Brunch in 2024 Published at:- From Past to Present: Evolution of Labour Rights on World Labour Day Published at:- Casino Gambling Systems and Strategies — Make Your Right Choice Published at:- The Importance of Investing in a Quality Portable Trade Show Display Published at:- How to Support and Promote World Heritage Conservation on World Heritage Day 2024 Published at:- Cultural Significance of the Cricket World Cup Logo Designs Published at:- Unlocking Innovation: What to Expect from the Jio 5G Smart Mobile Published at:- Betting on Underdog Squads: Be or Not to Be Published at:- vi shortcuts in terminal Published at:- Maintaining a Balanced Diet in Your Third Trimester: Nurturing Both Mother and Baby Published at:- Mobile Addiction and Relationships: Finding Balance in a Tech-Driven World Published at:- Interface and Usability of 1win: User Experience Published at:-R4R Team
The content on R4R.co.in website is created by expert teams.We have vistots from India, Afghanistan, Bahrain, Bhutan, Canada, France, Germany, Iraq, Japan, Kenya, Kuwait, Maldives, Nepal, Netherlands, Nigeria, Oman, Qatar, Russia, Rwanda, Seychelles, Tanzania, Ukraine, UAE, UK, USA etc