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 Program to find and replace characters on string in java Program to find the duplicate characters in a string Program to check whether a given character is present in a string or not Java Program to Print Permutations of String Java program to find frequency of characters in a string Java Program to remove duplicate characters in a string

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 Methods 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 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 file Reader Java Buffer Reader Java file Writer Java BufferedWriter Java InputStreamReader Scanner in Java Java StringReader Java StringReader Class Java PrintWriter Java File Java Read File Line By Line Java FileInputStream Java FileOutputStream Java Create File Java Delete File Java Open File Java Read File to String Java copy file Java Read JSON file Jar File in Java Java FileNotFoundException


Java Serialization Java transient


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


Java AWT


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 Tutorial JDBC Architecture Types of JDBC Drivers JDBC vs ODBC Java Database Connectivity with MySQL Statements in java Prepared statement in Java Resultset in java Java ResultSetMetaData DatabaseMetaData in Java Callable Statement in Java Transaction Management in java Design of JDBC

Java Differences

Java vs JavaScript Python vs Java Kotlin vs Java Java vs C++ C# vs Java Java float vs double Java vs Scala Static vs Non-static in Java C vs Java int vs Integer in Java Java protected vs private Java vs Dot Net Stack vs Heap in Java Java Array vs ArrayList Java SE vs EE Difference between = = and equals ( ) in java Difference between C, C++, java

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 add double quotes in a string in Java How to convert list to String in Java 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 find the length of an Array 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 import packages in Java How to run applet Program in Java How to take Array Input in Java How to achieve abstraction in Java How to call static method in Java How to compare characters in Java How to compare dates in Java How to create a linked list in Java How to get ASCII value of char in Java How to initialize string array in Java How to Install Java on MAC How to run java program in ubuntu How to find characters with the maximum number of times in a string java How to Set Java_home in Linux How to Split the String in Java with Delimiter How to uninstall the Java in Ubuntu How to Split String by Comma in Java How to remove special characters from String in Java How to remove last character from String in Java

Java 8 Features

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

Java 9 Features

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

Java 16

Java 16

Java 17

What is new in Java 17

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.fma() 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


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 Convert Char array to string in java Check whether Java is installed or not How to calculate time difference in Java How to stop execution after a certain time in Java Jagged Array in Java Java ArraylistRemove() Time Complexity Java Swing Time Picker Zigzag Array in Java Array and String based questions in Java Array and String with Examples in Java Best Practices to use String Class in Java What is string in Java why it's immutable Java String Java String Inbuilt functions Java String Matches vs Contains Sum of digits in string in java Check the presence of Substring in a String in java Java import packages Interfaces and Classes in Strings in Java Maximum length of string in java Hidden classes in Java Class memory in Java public static void main string args meaning in java Reverse a String in Java String Concatenation in Java Difference between String and Char Array in Java Buffer reader to read string in Java Split String into String Array in Java Reverse a String using Collections in Java Upcasting and Downcasting in Java String Declaration in Java Method Overloading In Java Java Solid Principles Java Architecture Binary Search Java Star Program in Java Java Type Casting Java Pass-by-Reference Java Framework List Java Destructors Java Control Statements Java Byte Code Java Beans Java Identifiers Character Array in Java Java Applications Java Substring Java Session Non-primitive data types in Java Matrix Multiplication in Java JIT in Java Java Tokens Java Externalization Default Virtual Behaviour in C++ vs Java Why we use static in Java Session Tracking in Java Knapsack problem in Java Java Logo Java exception list Java Iterator Java instance variable Frugal number in Java Fork Join in Java Date time API in java Compile time vs Runtime in java Compare time in java AES 256 Encryption in Java Advanced Java skills What is advance Java? User Defined Exception in Java Upcasting in Java Tree Implementation in Java Special Operators in Java Reentrant Lock in Java Perfect Number in Java Java logger Java LinkedList vs ArrayList File Operation in Java Differences between Byte Code and Machine Code Difference between String Tokenizer and split Method in Java Difference between JIT and JVM in Java Constructor Overloading in Java Conditional operator in Java Concurrent Linked Deque in Java with Examples Command Class in Java Java Break Keyword Best Java IDE Association in Java Access specifiers in Java

What is new in Java 17?

Java 17 LTS is the most recent long-term support release for the Java SE platform. Under the Oracle No-Fee Terms and Conditions License, which stands for long-term support, JDK 17 binaries are available for free usage in production and free redistribution. September 15, 2021, saw its release.

What is new in Java 17

By the time one becomes used to and interprets the working of a device, there are no repetitive thoughts and few releases. A JDK17 Open LTS version that includes development tools, libraries, a Java virtual machine, and other files is currently available. We add new features with every version, but we also have to watch out for those that are changed or removed. Before moving on to the installation process or updating it, let's talk about the evolution of open LTS versions.

What is new in Java 17

Evolution of open LTS Java releases

It has been good up till now, but current releases suggest that Java is quickly rising in popularity in the IT sector. Consider when we had to wait for new Java versions, like Java 6 from 2006 to 2012, Java 7 from 2013 to 2014, and Java 8, which introduced the most well-liked notions of lambda streams and streams. In the future, we now experience frequent new Java releases, such as the launch of Java 9 in 2017, Java 10 in 2018, and Java 11 within the same year. However, Java has strong roots in the sector this time because most businesses chose it as their main language for development and demanded a certain skill set from workers.

We can sketch the structure that each it is for sure short new versions are expected to appear; thus will we get Java 12 and Java 13 in the one the year 2019? As we all know, this program code is managed, designed, and maintained by Oracle technologies, so this firm has expanded significantly. By 2020, it will be standard practice for new Java LTS releases to occur every six months, leading to the release of Java 14 and Java 15 that year. Presently, Java 16 is the most current LTS; however, due to the fast growth, a new LTS, Java17, announced on September 15, 2021, was expected to be released only shortly.

Features of java 17

Everyone is anxious for significant updates in this version to facilitate workflow. Still, developers should be unhappy because there aren't any significant version checks for major releases, as shown by the JDK improvement proposal, also known as JEPS, which is supplied below:

 JEP 415: Context-Specific Deserialization Filters

Allowing applications to set context-specific and continuously selected deserialization filtering through a JVM-wide filter builder that selects a filter for each attacker can exploit the operation.


  • Because information of incoming data streams is frequently accessed via an unrecognized or unauthenticated client, the abstraction of unknown data is an inherently dangerous process.
  • The key to avoiding serialization threats is to block the deserialization of instances of any class, which prohibits the direct or indirect execution of that class's methods.
  • By properly structuring the stream, a hacker can execute code from any class with malicious intent. If object building includes side effects that change state or start other activities, the security of application components, library objects, and the Java runtime may be challenged.

JEP 414: Vector API (Second Incubator)

JDK 17's vector API has been enhanced for efficiency and implementation, including menus for converting byte vectors into and out of boolean arrays.


  • Clean & concise API: The API must be able to represent a wide range of vector computations quickly.
  • Platform independent: The API must be able to be implemented on a range of CPU designs that enable vector operations.
  • Speed and reliability runtime compilation on x64 and AArch64 platforms
  • Graceful degradation: Warnings may be sent if one cannot properly translate a vector calculation to vector commands.

JEP 412: Foreign Function & Memory API (Incubator)

This JEP proposal is a development of the Foreign-Memory Access API and the Local Compiler API, two prior developing APIs. Which has already been a subject of Java 14, 15, and 16


The Java Native Interface is designed to replace a stronger java Program development methodology since it is more user-friendly (JNI).

Performance: Performance comparable to already available APIs like JNI or sun. Misc.

Unlikely, if not worse. Efficiency.

General: provided methods for using different external memory types, such as native memory, persistence memory, and heap memory, as well as means to adapt to future changes in platforms (such as x86 32-bit) and imported functions written in languages other than C (like C++, FORTAN).

Security: Only disable the default, unsafe actions when software developers or end users have chosen to do so.

JEP 411: Deprecate the Security Manager for Removal

A Security Manager has existed since Java 1.0. However, for many years, it was hardly ever utilized. Security Manager has been discontinued in Java 17 and will be eliminated with the outdated Applet API in a later version to improve Java (JEP 398).


  • Get developers ready for Java's upcoming release, eliminating the Security Manager.
  • Send a warning if a user's Java software depends on the Security Manager.
  • Examine whether creating new APIs or other techniques is necessary to address the Security Manager's special, constrained use scenarios, including blocking System::exit.

JEP 410: Remove the Experimental AOT and JIT Compiler

Maintain the experimental Servlet JVM translator api (JVMCI) even though Graal translator is used, so programmers can continue to utilize outside compiler versions for JIT processing (GraalVM).

Motivation: JDK 9 now includes a new capability called forward compilation (the jaotc tool). The Graal compiler, created in Java, is used for AOT compilation by the jaotc. Because these experimental qualities have not been applied, much work is being done to maintain and enhance them. These functions were absent from the JDK 16 builds that Oracle made available, but no one had any objections.

JEP 407: Remove RMI Activation

The remaining Remote Method Invocation (RMI) must be kept but would eliminate the Activation mechanism. The RMI Activation method is no longer needed because it is no longer necessary. It was marked as deprecated and suggested removal in JEP 385 of Java SE 15.

JEP 406: Pattern Matching for a switch (Preview)

By extending Java's pattern language, template matching for switches enables the verification of switching expressions and statements against a wide range of patterns, each of which has a distinct action. It enables the straightforward and secure expression of complicated data-oriented queries.

Instanceof has been enhanced in JDK 16 to include type patterns and pattern recognition. The common instanceof-and-cast idiom is made simpler by the small extension suggested.


  • Switching phrases and statements becomes more expressive and useful by enabling patterns to appear in case labels.
  • If necessary, let the historical turning point's negligible be reduced.
  • There will be the introduction of 2 additional patterns: 

   1. Using arbitrary boolean expressions and guarded patterns can improve template matching algorithms.

   2. Parenthesized patterns: to resolve processing problems.

  • Ensure all current switch phrases and sentences are compiled with the same meaning and executed without alteration.

JEP 403: Strongly Encapsulate JDK Internals

Strongly enclose all JDK internal components, except relevant ones like the sun. misc. Unsafe. As it existed from JDK 9 to JDK 16, it won't be feasible to relax the strong encapsulating of internal components with a unified command parameter.

JEP 398: Deprecate the Applet API for Removal

Because all online browser makers have either stopped supporting Java browser plug-ins or even have made plans to do so, Applet API is essentially useless. The Applet API wasn't removed sooner, even though it was banned in Java 9.

JEP 391: macOS/AArch64 Port

Port the JDK to the new macOS/AArch64 platform in anticipation of future demand.


  • Apple's choice to switch its Laptops over to AArch64 from x64. There is already an AArch64 version of Java for Linux, but work is now being done on a Windows port.
  • Software engineers want to utilize AArch64 software from all these transfers by applying conditional compilation, typical in JDK ports, due to differences in reduced standards like the programme binary interface and the set of restricted program counters.
  • Pre-integration validation can reduce the risk that changes for MacOS/AArch64 will separate the present Linux/AArch64, Windows/AArch64, and MacOS/x64 versions.

JEP 306: Restore Always-Strict Floating-Point Semantics

Making floating-point procedures equally strict rather than having both strong floating-point semantics (strictfp) and drastically varying normal floating-point meanings. Adding explicit and basic floating-point modes in Java SE 1.2 will restore the languages and VMS to their previous floating-point meanings.