Guide to Java Basics

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• Java Interface
• Enums in Java
• Abstract Class with Examples
• Nested Classes in Java
• How to Make Immutable Class in Java

Object-Oriented Programming

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• Abstraction in Java with Example
• Encapsulation in Java with Example
• Inheritance in Java with Example
• Polymorphism in Java with Example
• Composition in Java with Example
• Aggregation in Java with Example
• Association in Java with Example
• Cohesion in Java with Example
• Coupling in Java with Example
• Delegation in Java with Example
• Oops Concepts in Java

String Handling

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• Java String Class API Guide
• Guide to Java String Constant Pool
• Guide to String Best Practices in Java (Best Practice)
• String Special Operations with Examples
• String Comparison Methods with Examples
• String Methods for Character Extraction
• String Searching Methods with Examples
• String Modifying Methods with Examples
• Java StringBuffer Class API Guide
• Java StringBuilder Class API Guide

Exception Handling

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• Getting Started with Exception Handling in Java
• Guide to Create Custom Exceptions

Serialization in Java

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• Guide to Serialization in Java
• Java Transient Keyword
• Guide to the understanding of serialVersionUID
• Secure Coding Standards for Java Serialization

Guide to Collections Framework

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Interfaces

• Collections Framework – The Collection Interface
• Collections Framework - The Set Interface 
• Collection Framework – The SortedSet Interface 
• Collections Framework - The List Interface
  Collections Framework - The Map Interface 
• Collections Framework - The SortedMap Interface

Implementations

List Implementations:

• Collections Framework - ArrayList Class
• Collections Framework - LinkedList Class

Set Implementations:

• Collections Framework - HashSet Class
• Collections Framework - LinkedHashSet Class
• Collections Framework - TreeSet Class

Map Implementations:

• Collections Framework - HashMap Class
• Collections Framework - LinkedHashMap Class
• Collections Framework - TreeMap class

Sorting

• Guide to Comparable Interface
• Guide to Comparator Interface
• Sorting in Collections with Examples

Aggregate Operations(Streams)

• Collections Aggregate Operations
• Stream Reduction Operations

Utilities

• Java Collections Utility Class
• Guide to Algorithms used in Java Library
• 18 Useful Collections Utility Methods
•  Java CollectionUtils Class

Best Practices and Examples

• Different Ways to Iterate over List, Set and Map in Java
• Guide to Best Practices to Java Collection Framework
• Guide to Java 8 forEach Method

Java I/O

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Java I/O Basics

• Overview of Java I/O
• Java I/O Byte Streams
• Java I/O Character Streams
• Java I/O Buffered Streams
• Java I/O Object Streams
• Java I/O Data Streams

File Handling Examples

List of the File examples to show the use of Java I/O to create, read, write, modify a file and get the file’s information.

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• Create File
• Write File
• Delete File
• Copy File
• Move File
• Rename File
• Append to File
• Read File using BufferReader
• Read File using BufferInputStream
• Read File using DataInputStream
• Get File Size in Bytes KB MB GB TB

File Serialization Examples

• How to write an Object to file in Java
• How to Read Object from File

File Compression Examples

• Compress Files in ZIP format in Java
• Decompress Files from a ZIP file in Java

Directory

List of the directory manipulation examples.

• Get the current working directory
• Create directory
• Delete directory
• Copy directory
• Traverse /List a directory structure
• Check if the directory is empty

File Utilities

• Java File Utility Class
• Java Zip Utility Class
• Top File Utility Methods

Java I/O Reference

• https://docs.oracle.com/javase/tutorial/essential/io/index.html
• https://docs.oracle.com/javase/8/docs/api/java/io/package-tree.html

Java Reflection

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• Overview of Java Reflection API
• Java Reflection for Classes
• Java Reflection for Methods
• Java Reflection for Fields
• Java Reflection for Constructors
• Java Reflection for Arrays
• Java Reflection for Enums
• Top Reflection Utility Methods
• Java Reflection Utility Class