Core java pdf – Core Java Notes PDF Free Download

Core Java Notes: Java is one of the oldest programming languages that is still on demand. Core java is a part of the java programming language. It is used for creating or developing a general-purpose language. It is not possible to create advanced java applications without core java. It is called a ‘stand-alone application’ because it uses only one-tier architecture. Core java is the primary concept in Java variables, arrays, data types, and OOPS. It is usually a part of the Java standard edition which allows to create and develop general Java applications. Beginners interested in learning Java must start learning core java. BCA, BTech, and BE students learning core java can get important information from this article. Anyone from the non-programming background can also learn core java to get the basic knowledge of Java. In this article, you will find complete details about the reference books and study materials, Lecture Notes of core java.

Introduction to Core Java

Core java pdf: Java is one of the object-oriented programming languages. It was developed by J. Gosling and released in 1995. Java provides the facility of writing once and running everywhere. Java is a simple and portable programming language that has a huge library. Core java provides knowledge on how to create basic codes using the java programming language. Anyone having experience in the object-oriented programming language can learn Java easily. If you are a fresher or experienced programmer interested in learning Java, core java is the best option to start with.

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Core Java Notes and Study Material PDF Free Download

Java is one of the oldest programming languages. So, there are various study materials for this language. Students get confused to choose the right study material. So, we have made a list of some important study materials of core java that will help you to understand Java well.

Java Programming Notes PDF Download
Java Programming Lecture Notes Download
Java Programming Study Material Download
Java Programming Questions PDF Download
Java Programming PPT Download

Core Java Reference Books

There are many books on Java. But you need to choose a few books for this subject. It is better not to read multiple books at the same time because it can make the subject complex. We have listed some important reference books for core java below:

  • The complete Reference Java, 8th edition, Herbert Schildt, TMH.
  • Programming in JAVA, Sachin Malhotra, Saurabh Choudary, Oxford.
  • Introduction to Java programming, 7th edition by Y Daniel Liang, Pearson.

Core Java Curriculum

There are various courses available on Java. In core java, you learn about the basics of Java. The syllabus may differ depending on the type of course. However, the basic structure remains the same. We have discussed the basic concepts of core java that are taught in core java courses.

Basics of Java

  •  Java – What, Where and Why?
  •  History and Features of Java
  •  Internals of Java Program
  •  Difference between JDK, JRE and JVM
  •  Internal Details of JVM
  •  Variable and Data Type
  •  Unicode System
  •  Naming Convention

OOPS Concepts

  •  Advantage of OOPs
  •  Object and Class
  •  Method Overloading
  •  Constructor
  •  static variable, method and block
  •  this keyword
  •  Inheritance (IS-A)
  •  Aggregation and Composition(HAS-A)
  •  Method Overriding
  •  Covariant Return Type
  •  super keyword
  •  Instance Initializer block
  •  final keyword
  •  Runtime Polymorphism
  •  static and Dynamic binding
  •  Abstract class and Interface
  •  Down casting with instance of operator
  •  Package and Access Modifiers
  •  Encapsulation
  •  Object class
  •  Object Cloning
  •  Java Array
  •  Call By Value and Call By Reference
  •  strict fp keyword
  •  Creating API Document

String Handling

  •  String: What and Why?
  •  Immutable String
  •  String Comparison
  •  String Concatenation
  •  Substring
  •  Methods of String class
  •  String Buffer class
  •  StringBuilder class
  •  Creating Immutable class
  •  toString method
  •  Stringtokenizer class

Exception Handling

  •  Exception Handling: What and Why?
  •  try and catch block
  •  Multiple catch block
  •  Nested try
  •  finally, block
  •  throw keyword
  •  Exception Propagation
  •  throws keyword
  •  Exception Handling with Method Overriding
  •  Custom Exception

Nested Classes

  •  Nested Class: What and Why?
  •  Member Inner class
  •  Anonymous Inner class
  •  Local Inner class
  •  static nested class
  • Nested Interface
  • Multithreading
  •  Multithreading: What and Why?
  •  Life Cycle of a Thread
  •  Creating Thread
  •  Thread Scheduler
  •  Sleeping a thread
  •  Joining a thread
  •  Thread Priority
  •  Daemon Thread
  •  Thread Pooling
  •  Thread Group
  •  ShutdownHook
  •  Performing multiple tasks by multiple threads
  •  Garbage Collection
  •  Runnable class


  •  Synchronization: What and Why?
  •  synchronized method
  •  synchronized block
  •  static synchronization
  •  Deadlock
  •  Inter-thread Communication
  •  Interrupting Thread

Input and output

  •  FileOutputStream & FileInputStream
  •  ByteArrayOutputStream
  •  SequenceInputStream
  •  BufferedOutputStream & BufferedInputStream
  •  FileWriter & FileReader
  •  CharArrayWriter
  •  Input from the keyboard by InputStreamReader
  •  Input from the keyboard by Console
  •  Input from the keyboard by Scanner
  •  PrintStream class
  •  PrintWriter class
  •  Compressing and Uncompressing File
  •  Reading and Writing data simultaneously
  •  DataInputStream and DataOutputStream
  •  StreamTokenizer class


  •  Serialization & Deserialization
  •  Serialization with IS-A and Has-A
  •  transient keyword


  •  Socket Programming
  •  URL class
  •  Displaying data of a web page
  •  InetAddress class
  •  DatagramSocket and DatagramPacket
  •  Two-way communication

AWT and EventHandling

  •  AWT Controls
  •  Event Handling by 3 ways
  •  Event classes and Listener Interfaces
  •  Adapter classes
  •  Creating Games and Applications


  •  Basics of Swing
  •  JButton class
  •  JRadioButton class
  •  JTextArea class
  •  JComboBox class
  •  JTable class
  •  JColorChooser class
  •  JProgressBar class
  •  JSlider class
  •  Digital Watch
  •  Graphics in swing
  •  Displaying Image
  •  Edit Menu for Notepad
  •  Open Dialog Box
  •  Creating Notepad
  •  Creating Games and applications


  •  BorderLayout
  •  GridLayout
  •  FlowLayout
  •  BoxLayout
  •  CardLayout


  •  Life Cycle of Applet
  •  Graphics in Applet
  •  Displaying image in Applet
  •  Animation in Applet
  •  Event Handling in Applet
  •  JApplet class
  •  Painting in Applet
  •  Digital Clock in Applet
  •  Analog Clock in Applet
  •  Parameter in Applet
  •  Applet Communication
  •  Creating Games

Reflection API

  •  Reflection API
  •  newInstance () & Determining the class object
  •  java tool
  •  creating java tool
  •  creating applet viewer
  •  Accessing private method from outside the class


  •  Collection Framework
  •  ArrayList class
  •  LinkedList class
  •  ListIterator interface
  •  HashSet class
  •  LinkedHashSet class
  •  TreeSet class
  •  PriorityQueue class
  •  ArrayDeque class
  •  Map interface
  •  HashMap class
  •  LinkedHashMap class
  •  TreeMap class
  •  Hashtable class
  •  Comparable and Comparator
  •  Properties class


  •  JDBC Drivers
  •  Steps to connect to the database
  •  Connectivity with Oracle
  •  Connectivity with MySQL
  •  Connectivity with Access without DSN
  •  Driver Manager
  •  Connection interface
  •  Statement interface
  •  ResultSet interface
  •  Prepared Statement
  •  ResultSet Metadata
  •  Database Meta Data
  •  Storing image
  •  Retrieving image
  •  Storing file
  •  Retrieving file
  •  Stored procedures and functions
  •  Transaction Management
  •  Batch Processing
  •  JDBC New Features
  •  Mini Project

Java New Features

  •  Assertion
  •  For-each loop
  •  Varargs
  •  Static Import
  •  Autoboxing and Unboxing
  •  Enum Type
  •  Annotation

List of Core Java Important Questions

  • Briefly explain Java and its features.
  • Briefly explain Java IDE.
  • How does Java enable high performance?
  • Difference between a local variable and instance variable.
  • Explain constructor and class.
  • Write a detailed note on OOPs concept.
  • What is meant by method overriding?
  • Describe the overload and abstract class.
  • Describe default and protected access specifiers.
  • What are the differences between HashMap and HashTable?

FAQs on Core Java Notes

Question 1.
What is Core Java?

Core java is a part of the java programming language. It is used for creating or developing a general-purpose language.

Question 2.
Is Core Java enough to get a job?

You can get a job with knowledge on core java, but it is better to learn HTML, CSS, SQL, and JavaScript to survive in the competitive job market.

Question 3.
How long does it take to learn Core Java?

You can learn core java within eight to ten weeks. However, it may take years to be an expert.

Question 4.
Is Core Java harder than Python?

Yes, it is. The syntax of core java is more complex than Python. Anyone having experience in the object-oriented programming language can learn core java easily.


Core java is necessary to learn Java. So, if you are interested to learn Java, you must start with core java. Hopefully, the details provided above will help you understand it better.