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      Loop ControlDecision Makingif-else Statementswitch statementfor loopfor each Loopwhile Loopdo...while Loopbreak Statementcontinue Statement

      OOPs (Object-Oriented Programming) ConceptsObject and ClassesClass AttributesClass MethodsMethodsVariable ScopesConstructorsAccess ModifiersInheritanceAggregationPolymorphismOverridingMethod OverloadingDynamic BindingStatic BindingInstance Initializer BlockAbstractionEncapsulationInterfacesPackagesInner classesStatic ClassesAnonymous ClassesSingleton ClassWrapper ClassesEnum Class

      Number ClassBoolean classCharacter ClassArraysMath Class

      File ClassCreating FilesWrite To FilesReading FileDelete FilesDirectory OperationsFiles and I/O

      ExceptionsTry Catch BlockTry with ResourcesMultiple Catch BlocksNested Try BlockFinally BlockThrows and Throw | Throw an ExceptionException PropagationBuilt-in ExceptionsCustom Exception

      MultithreadingThread Life CycleCreating a ThreadStarting a ThreadJoining ThreadsNaming a Thread with ExamplesScheduling Threads with ExamplesThread PoolsMain ThreadThread PriorityDaemon ThreadThreadGroup ClassJVM Shutdown Hook

      Thread SynchronizationBlock SynchronizationStatic SynchronizationInter Thread CommunicationThread DeadlockInterrupting ThreadThread ControlReentrant Monitor

      NetworkingSocket ProgrammingURL ProcessingURL ClassURLConnection ClassHttpURLConnection ClassSocket Class with ExamplesGenerics

      Collections FrameworkCollection Interface

      List InterfaceArrayList Class

      Queue InterfaceArrayDeque Class

      Map InterfaceSortedMap Interface

      Set InterfaceSortedSet Interface

      Data Structures Enumeration Interface BitSet Class

      How to Use Iterator?How to Use Comparator?How to Use Comparable?

      RecursionRegular ExpressionsSerializationString ClassJava Arrays - Class

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      Course
      Environment Setup

      Java Tutorial

      This Java tutorial is tailored for newcomers, offering a journey from basic principles to complex Java programming techniques. Completing this tutorial equips you with a solid understanding of Java, preparing you for advanced learning. You'll emerge ready to tackle the challenges of becoming a top-tier software engineer, with the skills to innovate and excel in the vast world of software development.

      Environment Setup

      Set Up Your Java Development Environment

      If you want to set up your own environment for Java programming language, then this tutorial guides you through the whole process. Please follow the steps given below to set up your Java environment.
      Java SE is available for download for free. To download click here, please download a version compatible with your operating system.
      Follow the instructions to download Java, and run the .exe to install Java on your machine. Once you have installed Java on your machine, you would need to set environment variables to point to correct installation directories.

      Setting Up the Environment Path for Windows 2000/XP

      Assuming you have installed Java in c:\Program Files\java\jdk directory. Below are the steps to set up the Java environment path for Windows 2000/XP:
      • Right-click on 'My Computer' and select 'Properties'.
      • Click on the 'Environment variables' button under the 'Advanced' tab.
      • Now, edit the 'Path' variable and add the path to the Java executable directory at the end of it. For example, if the path is currently set to C:\Windows\System32, then edit it the following way C:\Windows\System32;c:\Program Files\java\jdk\bin.

      Setting Up the Environment Path for Windows 95/98/ME

      Assuming you have installed Java in c:\Program Files\java\jdk directory. Below are the steps to set up the Java environment path for Windows 95/98/ME:
      • Edit the 'C:\autoexec.bat' file and add the following line at the end SET PATH=%PATH%;C:\Program Files\java\jdk\bin

      Setting Up the Environment Path for Linux, UNIX, Solaris, FreeBSD

      Environment variable PATH should be set to point to where the Java binaries have been installed. Refer to your shell documentation if you have trouble doing this.
      For example, if you use bash as your shell, then you would add the following line at the end of your .bashrc 
      export PATH=/path/to/java:$PATH'

      Online Java Compiler

      We have set up the Java Programming environment online, so that you can compile and execute all the available examples online. It gives you confidence in what you are reading and enables you to verify the programs with different options. Feel free to modify any example and execute it online.
      Try the following example using Run & Edit button available at the top right corner of the above sample code box 
      public class MyFirstJavaProgram {
         public static void main(String []args) {
            System.out.println("Hello World");
         }
      }
      For most of the examples given in this tutorial, you will find a Run & Edit option in our website code sections at the top right corner that will take you to the Online Java Compiler. So just make use of it and enjoy your learning.

      Popular Java Editors

      To write Java programs, you need a text editor. There are even more sophisticated IDEs available in the market. The most popular ones are briefly described below
      • Notepad − On Windows machine, you can use any simple text editor like Notepad (recommended for this tutorial) or WordPad. Notepad++ is also a free text editor which enhanced facilities.
      • Netbeans − It is a Java IDE that is open-source and free which can be downloaded from www.netbeans.org/index.html.
      • Eclipse − It is also a Java IDE developed by the Eclipse open-source community and can be downloaded from www.eclipse.org.
      IDE or Integrated Development Environment, provides all common tools and facilities to aid in programming, such as source code editor, build tools and debuggers etc.

      What is Next?

      Next chapter will teach you how to write and run your first Java program and some of the important basic syntaxes in Java needed for developing applications.