highest salary employee
package Javapractice; import java.util.stream.Stream; public class practice { public static void main(String[] args) { // TODO Auto-generated method stub //write a java8 program from a employee class with name and…
Find the duplicate elements from a list in java
public class practice { public static void main(String[] args) { // TODO Auto-generated method stub //write a program to find the duplicate elements in an array and print the duplicate…
Reverse a string in java
public class practice { public static void main(String[] args) { // TODO Auto-generated method stub String s="nima"; //reverse string String rev=""; for(int i=s.length()-1;i>=0;i--) { rev=rev+s.charAt(i); } } }
How does Spring Boot decide the order of auto-configurations?
How does Spring Boot decide the order of auto-configurations? Spring Boot’s auto-configuration order looks magical from the outside, but internally it follows a very deterministic algorithm based on class loading,…
Why does @Value sometimes fail to inject properties?
Why does @Value sometimes fail to inject properties? @Value failing to inject properties is one of the most confusing Spring problems because it often fails silently or only in specific…
What happens if @PostConstruct throws an exception?
What happens if @PostConstruct throws an exception? When a @PostConstruct method throws an exception in Spring, it is treated as a fatal bean initialization failure — and depending on where…
How do you detect bean initialization issues in large applications?
How do you detect bean initialization issues in large applications? Detecting bean initialization issues in large Spring applications is one of the most important real-world debugging skills — because most…
Why does a Spring Boot app consume more memory over time?
Why does a Spring Boot app consume more memory over time? 1. JVM Memory Model (Important Foundation) Spring Boot runs on the JVM, which manages memory automatically. Main JVM Memory…
RestClient in Spring Boot – Modern Alternative to RestTemplate
RestClient in Spring Boot – Modern Alternative to RestTemplate (Deep Dive into Fluent API, Internals & Interceptors) In the previous part, we understood why RestTemplate is no longer the best…
Synchronous Communication Between Microservices in Spring Boot
Synchronous Communication Between Microservices in Spring Boot (OrderService ↔ ProductService using RestTemplate & RestClient) In a real-world microservices architecture, services rarely live in isolation. They constantly need to talk to…
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