Spring java – Medium

4 days ago

Spring Security in Memory Authentication in Spring Boot

In this example, we will learn how to use in-memory authentication Spring Security in the Spring REST API example. We will create an example REST API in Spring Boot where we will retrieve the username of the user through the REST API endpoint. InMemoryUserDetailsManager class is a non-persistent implementation of the…

Spring

3 min read

Spring

3 min read

May 16

Spring Security Basic Authentication to Secure REST APIs

In this example, we will learn how to use Spring Security Basic Authentication to secure REST APIs in Spring Boot. Basic Authentication This is the most basic option to secure the REST APIs. This uses an HTTP header in order to provide the username and password when making a request to a…

Rest Api

3 min read

Rest Api

3 min read

May 12

Java for each loop | Enhanced for loop

In this topic, we will learn about the for-each loop in java. A for-each loop was introduced in Java 1.5. This loop is also known as an enhanced for loop. This loop is used to traverse Collection or Array in java. It helps us avoid programming errors. It makes the…

Java

2 min read

Java

2 min read

Apr 28

How to iterate Set in Java

In this topic, we will learn to iterate the Set in Java. A Set is an interface that is available in java.util package. These are the following ways to iterate the Set: • Iterate Set Using Iterator • Iterate Set Using for each loop • Iterate Set using Lambda Expression • Iterate Set using…

Java

2 min read

Java

2 min read

Apr 21

How to iterate List in Java

In this topic, we are going to learn to iterate the List in Java. A List is an interface that is available in java.util package. …

Java

3 min read

Java

3 min read

Apr 11

Java 9 Stream API Improvements Examples

Stream API was introduced in Java 8. In Java 9 new four methods are added in Stream API.The new four methods are takeWhile(), dropWhile(), iterate(), and ofNullable(). Table of content Java 9 takeWhile() method Java 9 dropWhile() method Java 9 iterate() method Java 9 ofNullable() method Conclusion 1. Java 9 takeWhile() method This is a…

Java

2 min read

Java

2 min read

Apr 3

Factory method to create Immutable Collection in Java 9

In Java 9 we can use “of()” factory methods to create immutable List, Set and Map. Until Java 8 we have to write a lot of lines of code to create immutable Lists, Sets and Maps. …

Java9

2 min read

Java9

2 min read

Apr 1

Java 9 @SafeVarargs Annotation Enhancement

@SafeVarargs annotation was introduced in Java 7. @SafeVarargs annotation is used suppressed compiler warnings related to Heap pollution. Heap pollution has occurred when one variable points to any other type of object then the compiler gives a warning message related to this Heap pollution. Until Java 8 @SafeVarargs annotation is…

Java

2 min read

Java

2 min read

Mar 29

Java 9 Diamond Operator With Example

Diamond operator feature was introduced in Java 7. Using of Diamond operator from Java 7 onwards there is no need to mention generic type on the right-hand side of the expression. How to declare Diamond Operator in Java? // This is prior to Java 7. We have to explicitly mention the generic type //on the right side as…

Java

2 min read

Java

2 min read

Mar 15

Use Java Try with Resources | Examples | SpringJava

Try with Resouces feature introduce in Java 1.7 version. Prior to Java 1.7 version, all resources are closed in the finally block. Then resources are closed in the finally block by the programmer explicitly increasing the length of the code, and reducing the readability of the code. So Java resolves…

Core Java

3 min read

Core Java

3 min read