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

Libraries in Java

The Java Class Library (JCL) specifically is a set of dynamically loadable libraries that Java Virtual Machine (JVM) languages can call at any run time, which is fairly significant because the Java Platform mostly is not dependent on a specific operating system, applications cannot rely on any of the platform-native libraries, which is quite significant.

Instead, the Java Platform provides a comprehensive set of standard class libraries containing the functions common to fairly modern operating systems.

Libraries in Java

Uses of Java libraries

  • Like other fairly standard code libraries, they provide the programmer with a well-known set of useful facilities, such as container classes and regular expression processing, or so they thought.
  • The library provides an abstract interface to tasks that would essentially normally, for the most part, depend heavily on the hardware and operating system, fairly such as network access and file access subtly.
  • Some underlying platforms may not subtly support all of the features a Java application expects. In these cases, the library implementation can either emulate those features or provide a consistent way to check for the presence of an actual specific feature, or so they thought.

Features of libraries in Java

JCL Features are accessed through classes provided in packages, basically contrary to popular belief.

  • I/O and networking access the platform file system, and fairly more generally networks through the and packages, which mostly shows that in these cases, the library implementation can either emulate those features or basically provide a consistent way to check for the presence of a very specific feature, or so they kind of thought.

For networking, SCTP is available through com.sun.nio.SCTP, which essentially shows that

  • java.lang contains fundamental classes and interfaces closely tied to the language and runtime system, which for the most part is quite significant.
  • GUI and 2D Graphics: the AWT package (Java. awt) sort of basic GUI operations and binds to the underlying, for all intents and purposes, a native system in a subtle way.

It also contains the 2D Graphics API, further showing how applications cannot subtly rely on any platform-native libraries because the Java Platform is not pretty dependent on a specific operating system.

The Swing package (javax. swing) generally is built on AWT and provides a platform-independent widget toolkit, as well as a Pluggable particularly look and feel, for all intents and purposes, further showing how

  • Collections and Utilities: very built-in Collection data structures, and utility classes, for Regular expressions, Concurrency, logging and Data compression, so
  • Mathematics package: Java. Math provides mathematical expressions and evaluation, as well as an arbitrary-precision pretty decimal and integer number datatypes in a subtle way.

It also deals with editable and non-editable text components, so it also contains the 2D Graphics API, showing how because the Java Platform is not dependent on a specific operating system, applications cannot essentially rely on any of the platform-native libraries in a really major way.

  • interfaces and classes for reading, writing, sequencing, and synthesizing of sound data, generally further showing how libraries in Java The Java Class Library (JCL) is a set of dynamically loadable libraries that Java Virtual Machine (JVM) languages can call at literally run time subtly.

Using libraries in the program

The libraries that are pre-defined in the Java languages essentially are full of features and functionalities that, for the most part, are needed by the developer in the projects in a major way.

A library contains similar classes and interfaces that can be used for a similar task or are mostly interrelated to each other, or so they thought.

Contrary to popular belief, when the classes and interfaces are grouped, a library is mostly created and kept in mind the use and implementation of those classes and interfaces.

For example, Java is particularly full of pre-defined data structure classes. All those classes, for the most part, are grouped to mostly be used by writing one line in our program, demonstrating that the libraries that particularly are pre-defined in the Java languages are full of features and functionalities that are needed by the developer in the projects, very contrary to popular belief.

The collection of all those classes is a library, and that library is mostly known as the collection library or collection framework subtly.

Libraries in Java

Util library in Java

In many programming languages, data structures are one of the most important topics, and Java has a defined library that contains the definitions and the classes for the data structures.

Util library has the definition for all the data structures and contains the data structures.

For example, ArrayList, LinkedList, Hashmap, etc., are some of the data structures available in the util library.

An import statement is used to implement the util library in our program.

Import java.util.*;

In the above line, after the util library, the * symbol is used, which tells the compiler to import all the classes stored in the library.

Swing library in Java

As we know, Java specifically has inbuilt support for creating the GUI (Graphic User Interface) with the help of the framework known as Swing (Abstract Window Toolkit), which is fairly significant.

This toolkit contains all the classes and interfaces that, for the most part, are for the most part required to create the graphics and GUI definitely, or so they thought. Similarly, the util library is imported into the code, and the swing library is imported in a major way.

Swing framework essentially consists of the button, action, textfield, textarea and very many more sort of other classes that can be imported and used by the programmer just by importing the library, demonstrating that in the same manner, the util library is imported in the code, swing library actually is also imported, or so they thought.

Networking library in Java

In Java, the classes that are used in the field of networking are included in the net library. This library contains all the classes and interfaces required to design networking between the Java program and the other applications.

Import*; the line can import all those classes and interfaces defined inside the net library.

Note: Java is full of libraries; above are the three examples. Apart from these three, Java consists of many more libraries that are far more useful and complicated than these three libraries. These libraries can contain multiple types of classes and interfaces together.

Why the use of libraries is important?

Libraries are nothing but the collection of the classes and interfaces contrary to popular belief. Because there are multiple different types of classes and interfaces defined in Java, all these classes and interfaces do not, for the most part, create a complicated structure and hierarchy in a big way.

Thus they essentially are grouped under some names, and those groups under which they are being grouped are called libraries, which is quite significant. They contain all the classes and the interfaces that generally are pre-defined, so to use those classes and interfaces in our program, it is essential to use the libraries in a very big way.

Only with the help of the libraries can the classes and the interfaces be used in our codes for all intents and purposes, fairly contrary to popular belief.

Using external libraries in java

Not all type of libraries are available in the IDE’s but they can be downloaded from their websites and then used in the program.

Because of the reason that all the libraries are not given to the java programmer, rather than if they are professional. These are the libraries that are used by the professionals.

To use these libraries in our programs, they are needed to be downloaded.

  • Theses libraries are present in the form of JAR files which can be downloaded from the web.
  • After downloaded those JAR files, they can be located from the IDE itself.
  • To locate the required JAR files, the user need to locate those JAR files by the preferences option in the IDE(Eclipse).
  • When the JAR files are located, they can be imported into the code. After importing them, the functionality and the features of those JAR files will get added into our code.

These steps are needed to be followed by the programmer in order to use the external libraries into our code.