Overloading main method in Java

Hello Everyone👋👋 What are the differences between Heap and Stack Memory in Java? Heap memory is used for dynamic memory allocation and stores objects and class instances, which have variable sizes and lifetimes. Stack memory, on the other hand, is used for static memory allocation, storing method call frames and local variables with a fixed size and lifetime. #Java #backend #frontend #FullStack #software #developer #programming #code #class #object #inheritance #Array #ArrayList #collections #SpringBoot #React #Angular #Nodejs #GenAI #AI #SpringAI #OpenAI #Claude #AWS #Java26 #interface #abstract #interview

Hello Everyone👋👋 Can we make the abstract methods static in Java? In Java, if we make the abstract methods static, It will become the part of the class, and we can directly call it which is unnecessary. Calling an undefined method is completely useless therefore it is not allowed. #Java #backend #frontend #FullStack #software #developer #programming #code #class #object #Array #ArrayList #collections #super #constructor #lambda #SpringBoot #SpringAI #OpenAI #GenAI #AI #Nodejs #Angular #React #AWS #interface #abstract #Java26 #interview

Hello Everyone👋👋 What is the difference between synchronized and volatile in Java? Synchronized makes sure that only one thread can access a block of code or method at a time, preventing concurrent access issues. Volatile makes sure that changes to a variable are visible to all threads immediately, but it doesn’t provide atomicity or mutual exclusion. #Java #backend #frontend #FullStack #software #developer #programming #code #class #object #Array #ArrayList #collections #SpringBoot #SpringAI #AI #GenAI #AgenticAI #OpenAI #Stream #API #Nodejs #React #Angular #multithreading #Java26 #interface #interview

Hello Everyone👋👋 What is the Optional class? Optional is a container that may or may not contain a value, designed to eliminate null references. #Java #backend #frontend #FullStack #software #developer #programming #code #class #object #Array #ArrayList #SpringBoot #collections #SpringAI #AI #GenAI #OpenAI #super #constructor #Nodejs #React #Angular #multithreading #thread #Java26 #Stream #API #HashMap #interview

Hello Everyone👋👋 What is a functional interface? An interface with a single abstract method. Enables lambda expressions. #Java #backend #frontend #FullStack #software #developer #programming #code #super #inheritance #class #object #interface #abstract #Java26 #GenAI #OpenAI #AIDevelopment #Nodejs #React #Angular #Claude #LLM #RAG #Langchain #collections #ArrayList #Arrays #AI #Hibernate #interview

Hello Everyone👋👋 What is method overriding? If a subclass provides a specific implementation of a method that is already provided by its parent class, it is known as Method Overriding. It is used for runtime polymorphism and to implement the interface methods. #Java #backend #frontend #FullStack #software #developer #programming #code #class #object #inheritance #lambda #super #constructor #SpringBoot #SpringAI #AI #GenAI #Java26 #Array #ArrayList #collections #Nodejs #Angular #React #AWS #interview

Hello Everyone👋👋 What is the final variable? In Java, the final variable is used to restrict the user from updating it. If we initialize the final variable, we can't change its value. It once assigned to a value, can never be changed after that. The final variable, which is not assigned to any value, can only be assigned through the class constructor. #Java #backend #frontend #FullStack #software #developer #programming #code #class #object #Array #ArrayList #collections #super #constructor #SpringBoot #SpringAI #AI #GenAI #OpenAI #Nodejs #Angular #React #AWS #Java26 #interface #abstract #interview

Hello Everyone👋👋 Why is the main method static? Because the object is not required to call the static method. If we make the main method non-static, JVM will have to create its object first and then call main() method which will lead to the extra memory allocation. #Java #backend #frontend #FullStack #software #developer #programming #code #class #object #Arrays #ArrayList #collections #inheritance #Java26 #GenAI #AI #OpenAI #lambda #SpringBoot #SpringAI #Nodejs #Angular #React #AWS #interface #abstract #interview

Hello Everyone👋👋 What is the difference between synchronized and volatile in Java? Synchronized makes sure that only one thread can access a block of code or method at a time, preventing concurrent access issues. Volatile makes sure that changes to a variable are visible to all threads immediately, but it doesn’t provide atomicity or mutual exclusion. #Java #backend #frontend #FullStack #software #developer #programming #code #class #object #inheritance #interface #abstract #Java26 #SpringBoot #AWS #microservices #AI #GenAI #OpenAI #Claude #LLM #RAG #Langchain #Nodejs #React #Angular #Array #interview

Hello Everyone👋👋 What is the difference between the final method and the abstract method? The main difference between the final method and the abstract method is that the abstract method cannot be final as we need to override them in the subclass to give its definition. #Java #backend #frontend #FullStack #software #developer #programming #code #class #object #Array #ArrayList #lambda #collections #SpringBoot #SpringAI #AI #OpenAI #super #constructor #Nodejs #React #Angular #AWS #inheritance #interface #interview