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Chapters ❤
0:00 Introduction
01:37 Theory
04:47 Code Implementation
Document Link :
https://docs.google.com/document/d/18...
String Document Link:
https://docs.google.com/document/d/1L...
Note:
Java was developed by Sun Microsystems (which is now a subsidiary of Oracle) in the year 1995. James Gosling is known as the father of Java. Before Java, its name was Oak. Since Oak was already a registered company, James Gosling and his team changed the name from Oak to Java.
STS Link:
https://spring.io/tools
JDK Link:
https://www.oracle.com/java/technolog...
Video Links:
Core Java Playlist:
• Core Java
Spring Playlist :
• Spring Framework
Java Videos Links :
Sorting with Comparable and Comparator in Java. -- • Sorting with Comparable and Comparator in ...
Guide To Java 8 Optional Class. Part-II. -- • Guide To Java 8 Optional Class. Part-II Be...
Guide To Java 8 Optional Class. Part-I. -- • Guide To Java 8 Optional Class. Part-I. Be...
Stream API: Intermediate & Terminal operations. -- • Stream API : Intermediate & Terminal opera...
Stream API: Intermediate & Terminal operations. -- • Stream API: Intermediate & Terminal operat...
Factory Method Design Pattern. -- • Factory Method Design Pattern. Bengali-Ep:...
How to create an Immutable class in Java? Immutable Design Pattern. -- • How to create Immutable class in Java? Imm...
Object Cloning, Shallow Copy, and Deep Copy. -- • Object Cloning, Shallow Copy, and Deep Cop...
Exception, Custom Exception, throw, throws -- • Exception, Custom Exception, throw, throws...
Exception, try, catch, finally -- • Exception, Propagation try, catch, finally...
Exception, Exception Hierarchy, Call Stack, Propagation. Bengali-Ep:22 -- • Exception, Exception Hierarchy, Call Stack...
Lambda Expression, Functional Interfaces, Anonymous Class. -- • Lambda Expression, Functional Interfaces, ...
Singleton Pattern. Lazy Instantiation for Multiple Threads.Part-2 Bengali-Ep:20 • Singleton Pattern. Lazy Instantiation for ...
Singleton Design Pattern in Java. Early & Lazy Instantiation Bengali-Ep:19 : • Singleton Design Pattern Java. Early & Laz...
HashSet, Its Methods & How It Works Internally in Java: • HashSet, Its Methods & How It Works Intern...
HashSet & How It Works Internally in Java. -- • HashSet & How It Works Internally in Java....
LinkedList, Methods & How It Works Internally in Java. -- • LinkedList, Methods & How It Works Interna...
ArrayList, ListIterator, How It Works Internally -- • ArrayList, ListIterator, How It Works Inte...
Collection Framework ---- • Collections Framework, Collection & Iterat...
'super' keyword - • 'super' keyword in Java. Bengali-Ep:13 #b...
'this' keyword - • 'this' keyword in Java. Bengali-Ep:12 #be...
Final Keyword - • Final keyword, Final variable, method, cla...
Static Keyword, Static variable, block, method, nested class - • Static keyword, Static variables, block, m...
Access Modifier. Private, Public, Default, Protected -- • Access Modifier. Private, Public, Default,...
Encapsulation, Data Hiding, Setter-Getter method, JavaBean Class -- • Encapsulation, Data Hiding, Setter-Getter ...
Polymorphism, Method and Constructors Overloading, Method Overriding -- • Polymorphism, Method & Constructors Overlo...
Inheritance, Is-A relationship, the problem with multiple inheritances -- • Inheritance, 'IS-A' relationship, multiple...
Abstraction, Interface -- • What is Abstraction? Interface Implementat...
Abstraction, Abstract Class - • What is Abstraction? Abstract Class Implem...
What are Class, Object, Method, and Constructors- • What is Class, Object, Method, Constructo...
Environment Setup and why we need to set path in environment variable -- • Environment Setup. Why do you set a Java p...
First Java Program - "Hello World" -- • First Java Programming "Hello World" Print...
Spring Video Links:
JDBCTemplate, RowMapper, ResultSetExtractor, BeanPropertyRowMapper Spring -- • JDBCTemplate, RowMapper,ResultSetExtractor...
Spring JDBCTemplate, JDBC, Statement, and PreparedStatement -- • Spring JDBCTemplate, JDBC, Statement and P...
What if we remove the @Configuration annotation in Spring? -- • What if we remove the @Configuration annot...
@Configuration, @Bean, @Component, @ComponentScan in Spring. -- • @Configuration, @Bean, @Component, @Compon...
Autowiring, Autowiring Modes - byName, byType & constructor. -- • Autowiring, Autowiring Modes - byName, byT...
Bean Scope, Singleton Scope, and Prototype Scope. -- • Bean Scope, Singleton Scope, and Prototype...
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Comparing String using == and .equals() method.
Both equals() method and the == operator are used to compare two objects in Java. == is an operator and equals() is method. But the == operator compares the reference or memory location of objects in a heap, whether they point to the same location or not.
Whenever we create an object using the new operator, it will create a new memory location for that object. So we use the == operator to check memory location or address of two objects are the same or not.
We can use == operators for reference comparison (address comparison) and .equals() method for content comparison. In simple words, == checks if both objects point to the same memory location whereas .equals() evaluates to the comparison of values in the objects.