2. Class, Object, and Types of classes

❋ Naming convention of Java

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

❋ Object declaration an initialization

❋ Life cycle of an object

❋ Anonymous object in Java

3. Packages in Java.

❋ Package naming conventions

❋ Sub packages

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

❋Importing packages in Java

5. Variables, Constants, and Literals

❋ 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.

8. Modifiers in Java

❋ In Java, what is the difference between an access modifier and a non-access modifier?

❋ Private, default, protected, and public are examples of access modifiers.

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

9. Static Keyword

❋ 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.

11. Inner Class in Java

❋ What is Inner class in Java?, Properties of the 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

❋ 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.

14. Encapsulation

❋ Encapsulation 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

❋ Inheritance in Java

❋ Is-A Relationship

❋ Aggregation and Composition(HAS-A)

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

17. Abstraction

❋ Abstraction in Java

❋ Abstract class

❋ Abstract method

❋ Interface in Java

❋ Nested interface, rules, and example programs.

18. Garbage Collection

19. Input-Output Stream

❋ FileOutputStream, FileInputStream

❋ SequenceInputStream

❋ ByteArrayOutputStream, ByteArrayInputStream

❋ DataOutputStream, DataInputStream

❋ Java FilterOutputStream, Java FilterInputStream

❋ Java ObjectStream, Java ObjectStreamField

❋ Console

❋ FilePermissionWriter,ReaderFileWriter,FileReader

❋ BufferedWriter,BufferedReader

❋ CharArrayReader,CharArrayWriter

❋ PrintStream,PrintWriter

❋ OutputStreamWriter, InputStreamReader

❋ PushbackInputStream, PushbackReader

❋ StringWriter, StringReader

❋ PipedWriter, PipedReader

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

21. String, String Buffer, String Builder

❋ String,

❋ Immutable String

❋ String Comparision, String concatenation

❋ Substring

❋ StringBuffer class

❋ StringBuilder class

❋ To String method

❋ StringTokenizer class

22. 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 Synchroniztion:synchronized method,synchronized block static synchronization

❋ Deadlock

❋ Inter Thread Communication

❋ Interrupting Thread