Posts

Showing posts from June, 2025
Exception Handling in Java – Simple Guide ๐Ÿ”ฅ Exception Handling in Java – A Complete Guide Posted by Rehan Khan | LearnWithRehan |Cracmindboyrk | Java Programming Tips ✅ What is Exception Handling in Java? Exception handling in Java is a mechanism that helps manage errors and abnormal behavior in your program gracefully, without crashing the application. ๐Ÿง  Why Use Exception Handling? Prevents program crashes Improves debugging Ensures smoother user experience Keeps code clean and maintainable ๐Ÿ› ️ Key Java Keywords Keyword Description try Code block to test for errors catch Handles exceptions if they occur finally Executes regardless of exception throw Manually throw an exception throws Declare exception a method might throw ๐Ÿ’ป Java Example public class Except...

Android Interview Question And Answer

1. What is Android? Android is an open-source, Linux-based operating system designed primarily for touchscreen mobile devices like smartphones and tablets. Originally developed by Android Inc. (founded by Andy Rubin in 2003), it was later acquired by Google. 2. Android Architecture Layers The Android stack consists of five key layers: Linux Kernel  - Handles hardware drivers and system security Libraries  - Includes SQLite, WebKit, and media libraries Android Runtime  - Features Dalvik/ART virtual machine Application Framework  - Provides high-level services like Activity Manager Applications  - User-facing apps like Contacts and Browser 3. Android App Components Every Android app comprises: Activities  (UI screens) Services  (background processes) Broadcast Receivers  (event handlers) Content Providers  (data sharing) Intents  (component communication) Android Advantages & Limitations 4. Advantages of Android ✔ Open-source platform ...