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Java Stack and Heap: Java Memory Allocation Lesson.

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    Stack Memory   Stack in java is a section of memory which contains methods, local variables, and reference variables. Local variables are created in the stack. Java Stack memory is used for the execution of a thread. They contain method-specific values that are short-lived and references to other objects in the heap that is getting referred from the method. Stack  memory is always referenced in  LIFO (Last-In-First-Out)  order. Whenever a method is invoked, a new block is created in the stack memory for the method to hold local primitive values and reference to other objects in the method. As soon as the method ends, the block becomes unused and becomes available for the next method. Stack memory size is very less compared to Heap memory. Key Features of Stack Memory Apart from what we have discussed so far, following are some other features of  Stack  memory: It grows and shrinks as new methods are called and returned respectiv...
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Inheritance in Java

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   Inheritance of Java The process by which one class acquires the properties(data members) and functionalities(methods) of another class is called  inheritance .  Child Class: The class that extends the features of another class is known as child class, sub class or derived class. Parent Class: The class whose properties and functionalities are used(inherited) by another class is known as parent class, super class or Base class. Syntax: Inheritance in Java class Animal {      eat() method      sleep() method } class Dog extends Animal {      bark() method } In Java, we use the  extends  keyword to inherit from a class. Here, we have inherited the  Dog  class from the  Animal  class. The  Animal  is the superclass (parent class or base class), and the  Dog  is a subclass (child class or derived class). The subclass inherits the fields...
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