class MyThread extends Thread public void run() System.out.println("Thread running..."); // Execution: MyThread t = new MyThread(); t.start(); Use code with caution.
Inheritance allows a child class to inherit properties and behaviors from a parent class using the extends keyword. Reusability is the primary benefit. Java supports and Multilevel inheritance. core java complete notes by durga sir
Java through classes to avoid the Diamond Problem (ambiguity during method resolution). It is achieved using Interfaces. Polymorphism class MyThread extends Thread public void run() System
class MyRunnable implements Runnable public void run() System.out.println("Runnable running..."); // Execution: Thread t = new Thread(new MyRunnable()); t.start(); Use code with caution. Thread Lifecycle States A thread transitions through several states: →right arrow Runnable →right arrow Running →right arrow Blocked/Waiting →right arrow Terminated (Dead) . Synchronization Java supports and Multilevel inheritance
byte (1 byte), short (2 byte), int (4 bytes), long (8 bytes).
: String objects are immutable. StringBuffer is mutable and thread-safe (synchronized). StringBuilder is mutable but not thread-safe (faster performance).