Core Java trainig



Course Content :

 Basics of Java

Chapter 1 contains the basic introduction to the Java language such as

√ What is Java?

√ History and Features of Java

√ C++ vs Java

√ Hello Java Program

√ Internal How to set the path?

√ JDK, JRE, and JVM (Java Virtual Machine)

√ JVM Memory Management

√ Internal details of JVM

√ Unicode System, Operators, Keywords, and Control Statements like if-else, switch, For loop, while loop, etc.

2. Class, Object, and Types of classes

Chapter 2 deals with the most important and core concepts of Java. They are:

√ Naming convention of Java

√ Classes, Objects, and Features. It explains how to declare a class, how to create an object in Java.

√ Object declaration and initialization

√ Life cycle of an object

√ Anonymous object in Java

3. Packages in Java

Chapter 3 deals with Packages in Java. Under this chapter, we will learn the following topics.

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√ How to declare  package in a company project


√ Package naming conventions

√ Sub packages

√ Types of packages such as user-defined packages, built-in packages

√ Importing packages in Java

4. Data types in Java

This chapter deals with the following topics in Java.

√ Data types in Java

√ Primitive data types

√ Non-primitive data types

√ Memory allocation of primitive and non-primitive data types, etc.


5. Variables, Constants, and Literals

Chapter 5 discusses three topic variables, constants, and literals. You will learn the following subtopics in this chapter.

√ Variable declaration & initialization

√ Naming convention

√ Types of variables such as local variables, instance variables, and static variables

√ Scope and memory allocation of variables.

6. Methods in Java

√ Methods in Java

√ Use of method in Java

√ Method declaration, method signature

√ Types of methods in Java: predefined method, user-defined methods: instance method, static method

√ Calling of method

√ Java main method

√ Return type in Java.

7. Constructor in Java

In this chapter, you will familiar with topics like:

√ What is constructor

√ Types of constructors: Default and Parameterized constructors

√ Java constructor overloading

√ Constructor chaining in java

√ Copy constructor in Java

8. Modifiers in Java

This chapter deals with topics like

√ What is an access modifier

√ Types of access modifiers like private, default, protected, and public

√ Types of Non-access modifiers like abstract, final, native, static, Strictfp, synchronized modifier, transient,and  volatile.

9. Static Keyword

This chapter deals with the following important topics.

√ What is Static keyword?

√ Static variable

√ Static method

√ Static block, Instance block

√ Static Nested Class in Java

√ Difference between static variable and instance variable, static method and instance method, static block, and instance block.

10. Final Keyword

Under this chapter, you will learn three important topics:

√ Final Keyword

√ Final variable

√ Final method

√ Final class.

11. Inner Class in Java

This chapter deals with the following topics. They are:

√ Inner class, Properties ofthe  inner class, Instantiating inner class.

√ Types of inner class in Java: Normal inner class, Method local inner class, Anonymous inner class, and Static nested class.

12. Super and this Keyword

This chapter can be partitioned into two sections: Super and This keyword. The first section discusses with

√ super keyword

√ Calling of superclass instance variable

√ Superclass constructor

√ Superclass method.

The second section deals with

√ This keyword

√ Calling of current class constructor, and method.

13. OOPs concepts


14. Encapsulation

This chapter deals with the following topics in Java.


√ How to achieve Encapsulation

√ Data hiding

√ Tightly encapsulated class

√ Getter and setter method in Java

√ Naming convention of getter and setter method

15. Inheritance

This chapter deals with

√ Inheritence

√ Is-A Relationship

√ Aggregation and Composition(HAS-A)

√ Types of inheritance:  Single level, Multilevel, Hierarchical, Multiple, and Hybrid inheritance.

16. Polymorphism

This chapter deals with


Type of polymorphism

Method overriding

Method overloading

√ Rules of method overloading and method overriding, various example programs related to rules of overloading and overriding.

√ Covariant Return type

17. Abstraction

In this chapter, you will familiarize with the most important topics in Java.


√ Abstract class

√ Abstract method


√ Nested interface, rules, and example programs.

18. Garbage Collection

This chapter deals with garbage collection in Java.

19. Input Output Stream

In this chapter, you will learn topics like

√ FileOutputStream, FileInputStream

√ BufferedOutputStream, BufferedInputStream

√ SequenceInputStream

√ ByteArrayOutputStream, ByteArrayInputStream

√ DataOutputStream, DataInputStream

√ Java FilterOutputStream, Java FilterInputStream

√ Java ObjectStream, Java ObjectStreamField

√ Console

√ FilePermissionWriter, Reader, FileWriter, FileReader

√ BufferedWriter, BufferedReader

√ CharArrayReader, CharArrayWriter

√ PrintStream, PrintWriter

√ OutputStreamWriter, InputStreamReader

√ PushbackInputStream, PushbackReader

√ StringWriter, StringReader

√ PipedWriter, PipedReader

√ FilterWriter, FilterReader, File FileDescriptor, RandomAccessFile, and  java.util.Scanner.

20. Collections Framework

This chapter is one of the most favorite chapters of the interviewer. It deals with the following important topics like

√ What is collection Framework?

√ List, Set, SortedSet, Queue, Deque, Map, Iterator, ListIterator, and Enumeration.

√ ArrayList, LinkedList, HashSet, LinkedHashSet, TreeSet, ArrayDeque, PriorityDeque, EnumSet, AbstractCollection, AbstractList, AbstractQueue.

√ Map, Map Entry, SortedMap, and NavigableMap

√ HashMap, LinkedHashMap, TreeMap, IdentityHashMap, WeakHashMap, and EnumMap.


21. Serialization

This chapter deals with Serialization, Deserialization, and Java transient keyword.

22. Exception Handling in Java

This chapter is very important for any Java technical test or Java technical interview. In this chapter, you will familiar with

√ Try-catch block

√ Multiple Catch Block

√ Nested try block

√ Finally block

√ Throw Keyword

√ Throws Keyword

√ Throw vs Throws, Final vs Finally vs Finalize

√ Exception Handling with Method Overriding Java Custom Exceptions

23. Java Annotations

This chapter deals with Java annotations, Built-In Java annotations like @Override,

24. Java Array 

This chapter deals with

√ Java Array

√ Types of array: single dimensional array, multidimensional array, declaration, instantiation, and initialization of Java array

√ Passing array to a method

√ Anonymous array in Java

√ Cloning an array in Java

25. String, String Buffer, String Builder

This is the most important chapter in the whole core java. It will deal with basically three topics such as

√ String,

√ Immutable String

√ String Comparision, String concatenation

√ Substring

√ StringBuffer class

√ StringBuilder class

√ toString method

√ StringTokenizer class

26. Java Thread

√ Java multithreading

√ Multithreading life cycle of a thread creating

√ Thread scheduler

√ Sleeping a thread, Start a thread twice

√ Calling run() method

√ Joining a thread

√ Naming a thread

√ Thread priority,

√ Daemon thread

√ Thread pool

√ Thread Group

√ Shutdownhook

√ Java Synchronization: synchronized method, synchronized block, static synchronization

√ Deadlock

√ Inter-thread Communication

√ Interrupting Thread

27. JDBC 

This chapter deals with

√ JDBC Drivers

√ Steps to connect to the Database

√ Connectivity with Oracle

√ Connectivity with MySQL

√ Connectivity with Access without DSN

√ DriverManager

√ Types of JDBC statements: Statement, Prepared statement, Callable statement

√ Database Metadata, Resultset Metadata

√ ResultSet, types of ResultSet,

√ Storing image, Retrieving image

√ Storing file, Retrieving file, Stored procedures, and functions

√ Transaction Management

√ Batch Processing

√ JDBC New Features, Mini Project, and interview questions.

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