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How to Change Default Behavior in Spring Security
1. What Spring Security Does ?. Spring Security helps you control who can access your application and what they can do. 1. Authentication (Who are you?) 2. Authorization (What can you do?) 3. Protection Against Attacks Spring Security includes built-in defenses for: if you want to learn the default behavior of spring security , default spring security. 2. What is anyRequest() anyRequest() is a matcher that applies to all remaining HTTP requests that have not been matched by previous rules. 3.What is permitAll() permitAll() allows unrestricted access to a resource , no authentication required — anyone can access . we can permit all the requests coming towards our web applications…
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How to Implement Singleton Design Pattern in Java (Step-by-Step)
What is singleton design pattern A Singleton Pattern says that just “define a class that has only one instance and provides a global point of access to it . If singleton class is loaded by two classloaders, two instance of singleton class will be created, one for each classloaders. Key Concepts 1. Significance of Serialization in Singleton Pattern Serialization in Java means converting an object into a byte stream so it can be: Deserialization is the reverse process (byte stream → object). Even if your class ensures only one instance, deserialization creates a NEW object, which violates the Singleton rule. Example: Singleton Class (Without Protection) 2.TestSingleton.java output false // false…