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[Solved]: Maven Error "Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.12.4:test (default-test) on project XYZ: There are test failures."
[Solved] Spring Data JPA :QueryCreationException: Could not create query for public abstract method XYZ
[Solved] Java UnsupportedClassVersionError : Compiled by a more recent version of the Java Runtime (class file version X), this version of the Java Runtime only recognizes class file versions up to Y
[Solved] java.lang.ClassCastException: org.apache.logging.slf4j.SLF4JLoggerContext cannot be cast to org.apache.logging.log4j.core.LoggerContext
[Solved] TESSDATA_PREFIX environment variable is set to the parent directory of your "tessdata" directory.

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[Solved]SQLServerException: Invalid object name ‘dual’

[Solved]SQLSyntaxErrorException: Unknown database ‘database_name’

[Solved]SQLException: ORA-28000: the account is locked

[Solved] MySQLNonTransientConnectionException: Could not create connection to database server.

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[Solved] Maven Error On Eclipse/STS : Could Not Calculate Build Plan Org.Apache.Maven.Plugins:maven-Jar-Plugin:jar:2.4
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JUnit : Best Practices

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Java Tutorial

Java :Overview and Setup

Java Overview
Java Evaluation
Environment Setup
Upgrade JDK in Eclipse
"Hello World" Program
Program Execution
Execution Steps
main() Variations
JIT,JDK,JRE,SDK,JVM

Java Keywords

Java Data Types

Primitive Type
Non-Primitive Type

Java Variable & Literals

Java Idnetifiers

Java Statements

Blocks
Empty Statements
Declaration Statements
Expression Statements
Control Flow Statement
- Decision Making
  - if
  - if-else
  - if-else if
  - switch
- Looping
- Branching
  - break
  - continue
  - return

Reachability of Statements

Java Operators

Unary Operators
Arithmatic Operators
Relational Operators
Conditional Operators
Bitwise Shift Operators
Logical Operators
Assignment Operators
Instanceof Operators
Boolean Operators
Ternary Operators
Operators Precedence

Java Comments

Java Documentation

Java OOPS Concepts

Naming Convention
Java Object
Java Class
Object Cretaion Ways
Type of Classes
Constructor
static keyword
this keyword

Java Inheritance

Inheritance(IS-A)
Aggregation(HAS-A)
Aggregation Vs Composition
super keyword
Constructor Chaining

Java Polymorphism

Method Overloading
Compiletime Polymorphism
Method Overriding
Runtime Polymorphism
Overloading vs Overriding
Covariant Return Type
Instance Initializer Block
final Keyword
Dynamic Binding
instanceof Operator

Java Abstraction

Abstract Class
Interface
Nested Interface
Marker Interface
Abstract Vs Interface

Java Encapsulation

Package
Import
Access Modifiers

OOPS Misll.

Java Object Class
Object Cloning
Shallow Vs Deep Cloning
Wrapper Class
- Byte
- Short
- Integer
- Long
- Float
- Double
- Boolean
- Character
- Number
strictfp keyword

Java :Array

Java :String Handling

Java :Exception Handling

Java :Collection

Java :Date & Time

Java :IO

Java :Conversion

Java :JDBC

Java :New Features

Java :Interview Questions

Java :Logging

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