Java Tutorial

Java Tutorial Java Features C++ vs Java Java History Java Hello World Java Development Kit Java Runtime Environment Java Virtual Machine Difference between JDK, JRE, and JVM Memory Areas in Java Java Operators Java Keywords Primitive Data Types Variables

Java Loops

Java Do While Loop Java While Loop Java For Loop Java Enhanced For Loop

Java Programs

Java Basic Programs Factorial Program in Java Fibonacci Series Program in Java Prime Number Program in Java Palindrome Number Program in Java Armstrong Number Program in Java Anagram Program in Java Pattern Programs in Java Calculator Program in Java Leap Year Program in Java Addition Program in Java Number Pattern Programs in Java Star Pattern Programs in Java Package Program in Java Pyramid Program in Java Sorting Program in Java String Palindrome Program in Java Even Odd Program in Java For Loop Program in Java If Else Program in Java Switch Case Program in Java GCD Program in Java LCM Program in Java Hello Program in Java Matrix Program in Java Menu Driven Program in Java Series Program in Java Client Server Program in Java Swapping Program in Java Pig Latin Program in Java Tower of Hanoi Program in Java Recursion Program in Java Matrix Multiplication Program in Java Perfect Number Program in Java Classes and Objects in Java Example Programs String Programs in Java Array Programs in Java Constructor Program in Java Inheritance Program in Java Abstract class Program in Java Interface Program in Java Encapsulation Program in Java Polymorphism Program in Java Exception Handling Program in Java Multithreading Program in Java Thread Program in Java Collection Programs in Java ArrayList Program in Java Stack Program in Java Applet Program in Java Swing Program in Java JDBC Program in Java How to run Java program in command prompt How to run Java program in Eclipse

Java Sorting

Sorting Algorithms in Java Merge Sort in Java Quick Sort in Java Bubble Sort in Java Insertion Sort in Java Selection Sort in Java Heap Sort in Java Radix Sort in Java Topological Sort in Java Bucket Sort in Java Counting Sort in Java

Java OOPs Concepts

OOPs - Object Oriented Programming Objects and Classes in Java Java Naming Conventions Constructors in Java Java this keyword Java static keyword Inheritance in Java Aggregation in Java Java super keyword Constructor Chaining and Constructor Overloading Java Polymorphism Static and Dynamic Binding in Java Java Abstraction Abstract class in Java Interface in Java Difference between Abstract class and Interface Java final keyword Packages in Java Access Modifiers in Java Java Wrapper classes Java Numbers Java Characters Java Integer Java Boolean Java Arrays Java Command Line Arguments Java strictfp Keyword Java Math

Java Strings

Java Strings Java String Methods StringBuilder in Java StringBuffer in Java Java Regular Expressions StringBuffer vs StringBuilder String vs StringBuffer String vs StringBuilder String Manipulation in Java Java String Concatenation How to Reverse a String in Java String Array in Java How to Compare Two Strings in Java How to Concatenate Two Strings in Java Why String in Immutable in Java java.lang.NumberFormatException for Input String String Pool in Java Java Generate Random String How to take String Input in Java Java String Interview Questions

Java Exceptions

Exception Handling in Java Java try catch Java throw Java throws Difference between throw and throws Java finally Java Custom Exception Java Exception Propagation

Garbage Collection

Automatic Resource Management in Java Java Garbage Collection Java finalize() Java gc() Difference between final, finally and finalize

Multithreading

Multithreading in Java Process and Thread in Java Basic Terms in Multithreading Java Thread creation Thread Scheduler in Java Java Thread class DeadLock in Java

Java IO

Java IO Java Read File Java BufferedWriter Java InputStreamReader Java File Java Read File Line By Line Java FileOutputStream Jar File in Java

Serialization

Java Serialization Java transient

Networking

Java Network Programming Java Socket Programming Java URL Java URLConnection HttpURLConnection in Java Java InetAddress Java DatagramSocket and Java DatagramPacket

AWT

Java AWT

Swing

Swing in Java

Java Collections

Collections in Java Java List Interface ArrayList in Java LinkedList in Java Vector in Java Stack in Java ArrayList vs LinkedList in Java ArrayList vs Vector in Java Java Set Interface HashSet in Java LinkedHashSet in Java TreeSet in Java Java Queue Interface PriorityQueue in Java ArrayDeque in Java Java Map Interface HashMap in Java LinkedHashMap in Java TreeMap in Java Dictionary in Java Hashtable in Java Properties in Java Collections class in Java Java Comparable Java Comparator Comparable vs Comparator in Java

Java Generics

Generics in Java

Java Annotations

Annotations in Java

Java JDBC

Java JDBC Tutorial

Java Differences

Java vs JavaScript Python vs Java Kotlin vs Java Java vs C++ C# vs Java Static vs Non-static in Java C vs Java int vs Integer in Java Stack vs Heap in Java Java Array vs ArrayList

How to

How to run Java program How to set path in Java How to check the Java version in cmd How to install Java in Windows 10 How to run Java program in cmd How to call a method in Java How to sort an array in Java How to iterate HashMap in Java How to write Java program How to create an array in Java How to create a package in Java How to generate random numbers in Java How to input String in Java How to create thread in Java How to find length of String in Java How to sort a string in Java How to use scanner in Java How to achieve multiple inheritance in Java How to run Java program in Eclipse How to call a function in Java How to create array of objects in Java How to create custom exception in Java How to achieve abstraction in Java How to call static method in Java

Java 8 Features

Java 8 Features Lambda Expressions in Java Functional Interface in Java Streams in Java Java Base64 Encoding and Decoding Parallel Arrays Sort in Java

Java 9 Features

Java 9 Tutorial Java 9 Try With Resources Java 9 Interface Private Method

Java Servlet Tutorial

Java Servlets Tutorial

Java JSP Tutorial

Java JSP Tutorial

Hibernate Tutorial

Hibernate Tutorial

Spring Tutorial

Spring Tutorial

Spring MVC Tutorial

Spring MVC Tutorial

Jenkins Tutorial

Jenkins Tutorial

Java Math Methods

Math.abs() Math.acos() Math.addExact() Math.asin() Math.atan () Math.atan2() Math.cbrt() Math.ceil() Math.copysign() Math.cos() Math.cosh() Math.decrementExact() Math.exp() Math.expm1() Math.floor() Math.floorDiv() Math.floorMod() Math.getExponent() Math.hypot() Math.IEEEremainder() Math.incrementExact() Math.log() Math.log10() Math.log1p() Math.max() Math.min() Math.multiplyExact() Math.multiplyFull() Math.negateExact() Math.nextAfter() Math.nextDown() Math.nextUp() Math.pow() Math.random() Math.rint() Math.round() Math.scalb() Math.signum() Math.sin() Math.sinh() Math.sqrt() Math.subtractExact() Math.tan() Math.tanh() Math.toDegrees() Math.toIntExact() Math.toRadians() Math.ulp()

Java String Methods

toCharArray() copyValueOf() endsWith() equals() equalsIgnoreCase() format() getBytes() getChars() hashCode() indexOf() intern() isEmpty() join() lastIndexOf() length() replace() replaceAll() replaceFirst() split() startsWith() subSequence() substring() toLowerCase() toUpperCase() trim() valueOf()

Java Conversion

Java Convert String to int Java Convert int to String Java Convert String to long Java Convert long to String Java Convert String to float Java Convert float to String Java Convert String to double Java Convert double to String Java Convert String to Date Java Convert Date to String Java Convert String to Object Java Convert Object to String Java Convert String to char Java Convert char to String Java Convert int to long Java Convert long to int

Misc

Functional Interfaces in Java Singleton class in Java Awesome explanation of Strings in Java Object class in Java Static class in Java All the important string methods in Java String Handling Method in Java What are Array strings in Java Advantages and Disadvantages of Strings in Java Big Decimal class in Java Class definition in Java Char and String differences in Java Difference between String, StringBuffer and StringBuilder in java Replace character in string Java String Coding Interview Questions in Java What is String in Java? String isnullorempty in Java String Matches in Java Trim Method in String Java Bean class in Java Libraries in Java Arithmetic Operations on String in Java

How to check the Java version in cmd

To make programs that can run on our systems, we need to install programming language-related software in our systems. Different programming languages require different types of software, aka IDEs (Integrated Development Environment), to code, compile, and execute the programs.

These IDEs particularly allow the user to develop the code and run the programs. IDEs are the development environment where users can code, compile, and execute the codes, which is most significant. For many programming languages, IDEs are the only thing specifically required for development, so for all intents and purposes, IDEs are essentially the only thing required to develop a big way.

For example, C++ requires IDE to generally be installed on the system to execute its code subtly. Python also needs IDE to be present in the system before running its code. Hence, to make programs that can specifically run on our systems, we need to install programming language-related software in our systems specifically.

Different programming languages require different types of software, aka IDEs (Integrated Development Environment), to code, compile, and execute the programs. These IDEs allow the user to develop the code and run the programs. IDEs are the development environment where users can code, compile, and execute the codes, which is significant.

There are particularly multiple IDEs present in the market for generally multiple different programming languages. One can download and use any IDE as per choice and convenience, so to make programs that can run on our systems, we need to install programming language-related software in our systems mostly.

Different programming languages require different types of software, aka IDEs (Integrated Development Environment), to code, compile, and for the most part, execute the programs. These IDEs mostly allow the user to develop the code and generally run the programs. IDEs are the development environment where users can code, compile, and execute the codes, or so they specifically thought.

Setting up the path of JDK

For the most part, downloading and installing JDK is not sufficient for Java development. Even after installing the JDK in the system, it is necessary to set the path of the JDK in the system's memory in a major way.

When a Java program is essentially written and compiled, the system checks for the required kit for Java development. System searches for the compiler of Java in its memory with the help of the paths mentioned in its memory in a big way.

When the system gets the path of the JDK in the system in its memory, it compiles and executes the program, but if it does not essentially find it, it gives the error to the user in a particular major way. IDEs also search for the compiler of Java in the system memory and provide the integrated environment with the help of JDK in a very big way.

Role of JVM in Java programs

JVM or Java Virtual Machine is mostly an integrated part of Java development, which is fairly significant. As the name tells us, it specifically is a virtual machine, which is fairly significant. i.e., which generally shows that JVM or Java Virtual Machine generally is an integrated part of Java development subtly.

It does not exist in reality, or so they do, for the most part, though. It is a machine that particularly helps the machine run the Java programs and the programs written in, for all intents and purposes, other programming languages, showing how as the name tells us, it is a virtual machine in a major way.

JVM runs the programs written in any programming language using the byte code created by the Java compiler, which shows that it generally is a machine that helps the machine generally run the Java programs and the programs written in a sort of other programming languages, showing how as the name tells us, it kind of is a virtual machine. When a user, for the most part, is installing the components for running Java programs in the system, JVM particularly needs to be installed separately along with the programs and other resources, really contrary to popular belief.

Different versions of the JDK

January 13, 1996, was the date when the JDK was released in the market, which is fairly significant. When the JDK was released, it, for the most part, was at the version 1.0, and the Java really was called Java 1, or so they essentially thought. Later on, generally, multiple different and improved versions of the JDK were released in a big way. Currently, the latest version of the JDK is 18.0.1.1, released by Oracle in May 2022 in a major way.

Checking the Java version using the command prompt in Windows 10

When we talk about the version of Java installed in our system, it essentially means the version of the JDK installed in our systems. It is really easy to check the version of Java or JDK that kind of is installed in our systems with the help of a command prompt in windows rather than by opening the control panel and then going to the program and featuring an option to check the version of JDK, which particularly is fairly significant. how-to-check-the-java-version-in-cmd1.png

How to check the Java version in cmd
How to check the Java version in cmd

Here, for the most part, we can see the information regarding the JDK installed in our system. Product version, Size of JDK, and basically other important links, for the most part, are mentioned in the information in a definitely major way.

All the steps mentioned above can be avoided by using the command prompt, which is fairly significant.

  • To check the version of the JDK using the command prompt, we basically have to generally open it by pressing the Windows fairly key + R or subtly using the start button.
  • Then write the line, "java -version," and particularly hit the enter button, showing how we can see the information regarding the JDK installed in our system, which is actually fairly significant.
How to check the Java version in cmd

Checking the Java version using the terminal of Mac

In windows, we can check the version of the JDK using the command actually promptly, but in Mac, the command prompt of the windows kind of is replaced by its pretty own particularly terminal. Although the operating system specifically is changed from the windows to the Mac, the steps to check the version of the JDK really are still the same in a really major way.

  • It is essentially started by opening the fairly terminal in the Mac, which is fairly significant.
  • Then kind of write the command to check the version of the JDK, that is, "java -version", which is fairly significant for all intents and purposes. After hitting the enter button, the version of the JDK installed in the system will be displayed on the screen, which is actually fairly significant.

Checking the Java version using the command prompt in Windows 7, 8

The steps to check the version of the JDK or Java installed in the system of windows 7 or 8 are mentioned below in a fairly major way.

  • Using the start button or by opening the Run option in windows, sort of open the command prompt subtly.
  • Then by writing the same command, "java -version," in the pretty terminal and by hitting the enter button after it, we can definitely get the version of the JDK installed in our system, or so they essentially thought.



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