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Zeek Core Java

This is Zeeshan A.Khan and This is my blog which covers basics of Core Java concepts.It contains an index page for ease of access.I use this blog for references of topics for myself. Thank You..

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Zeek_98_CalendarClass.java

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/* Gregory calendar is calendar we use in our day to day life. It has 12 months from January to December 30 or 31 days in each month except February. In February 28 days(not a leap year) or 29 days when its a leap year */

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"Vibrating"
( Arthimetic /Assignment / Comparison / Logical / Bitwise ) Operators
(Custom or User Defined) Exceptions
(Integer/ Character/Boolean/String/ Null/ Floating Point/ Backslash) literals
(Layout created through concepts of HTML and CSS[mainly Flexbox] )
(optional)-If-Else statement
(Surface Area Base & Volume of cylinder) using method
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5 keywords to handle Exception
A code-So that the Second thread is executed after First thread is terminated
a++ and ++a difference
Abstraction
AccessModifiers and what they can access
Advantage of OOPs
Advantages of Java Package
AndroidTV inherits LCD_TV
Arguments & Parameters
Array inside Array
Array Syntax and Starting
Ask the user to input a string and replace the space in string with an underscore and print
attributes
Base and Derived classes connected through inheritance
Basics and structure of java program
Calculate your income per month(in Rs) after giving income-tax away(Use Data from table).Take input from user
Calculate(TotalArea / Surface Area One Face / Volume) of cube using methods and scanner class
Calculator
Calendar Class
Characteristics of Hashing Algorithm
Check input number is integer or not
Checked Exception
Circle is ParentClass and Cylinder is ChildClass
Class
Class and Object in Java
Code for Multiple Conditions
Code to calculate acceleration from Newton's Third equation of motion
Code which deals with specific unchecked exceptions in a unique way
Code which tells us that the given number is greater than the number defined by user
Collections & their need & available as
Conditional block execution
Conditions for class and methods to be abstract
Conditions that are false for Inheritance
Constructors in Thread Class
Constructors used to set length & width & height
Contructor class by selecting parameters click on source(Top bar) and click on Generator using fields(ECLIPSE IDE)
Create a class CellPhone which prints "Ringing"
Create a class Employee1 with following method and propertites
Create a class Humans that inherits both Monkey and BasicAnimals
Create an array and write a code to find its maximum element
Create an array of 5 float numbers and display their sum using for each loop
Creating a multi dimension array
Creating ArrayList
Creating your own Java class(Custom class)
Cylinder class and getter setter for (radius &height)
Data types and their classification
Default methods
Depricated Methods
Difference between ArrayList and LinkedList
Difference in while and do while loop
Differences b/w Abstract and Interface
Different ways to print
Do While Loop
Does AndroidTV inherits both TV and LCD_TV
Dynamic Method Dispatch
else
else if
Encapsulation
Error
Exception Handling Conceptption
Exercise to calculate percentage by user input for 5 subjects
Explain briefly
Explain examples of Syntax & Logical & Runtime errors while coding
Extends and Implements Use
extends keyword for inheritance
extends Thread
for and for each loop
For Loop
Generating Constructor
Generating random numbers and using switch case
Getter and Setter for radius and height
Getter-Setter Method
Getting Today's Date and Time using Java
Hierarchy of Collection Framework
How Multiple Inheritance handled
How to access official Java Documentation(Oracle)
How to access package from another package?
How to set priorities to threads?
if
Implement interface Runnable and obtain concurrency by threads
Implementing More than 1 interfaces & extend 1 class
Important points about Java HashSet class
Importing Scanner Class to take input for user
In Java finally block is always executed whether an exception is handled or not
Increment and Decrement of integers and characters
Inheritance
Inheritance Hierarchy
Inheritance hierarchy for executing constructors
Inheriting Exception Class
Java interpreted or compiled
Java program which asks user their name and prints Hello name
Job of Compiler or Interpreter ?
LCD_TV inherits TV
Life Cycle of Thread- New->Runnable->Running->Waiting->Terminated
LinkedList
Literals
Logical Errors
Main is the method first invoked when the program is run
Make a game Guess the number using constructor and Methods and loop
Method for first n natural no
Method for pattern
Method Overloading-multiple methods > same name >different parameters and working
Method Overriding In Java
method to print multiplication table
Methods
Model a problem in OOP
Monkey Class and interface BasicAnimals
Multiple Inheritance
multithreading and multiprocessing in Java?
Naming conventions of classes and functions
Nested Try Block is using a try block inside another try block
offer & peek & poll
OOP
OOPs concept in Java
Overloading Constructor
Overriding methods of Exception Class
Play rock/ paper/ scissors
Polymorphism
Polymorphism combined with inheritance
Precedence and Associativity concept
Print a letter by putting username where name appears in letter template
Print first 10 odd numbers from 0 using for loop
Print integer numbers from 100 to 200
Print Multiplication table of number using for loop
Print sum of first n even integers.Take value of n from user
print()
printf()
println()
Private Methods
private(access-specifier) and data hiding
Problems in Multiple Inheritance
Reasons for Interface
Rectangle is ParentClass and Cuboid is ChildClass
Recursion in java is a process in which a method calls itself continuously till the end
Refer to Zeek_49_DynamicDispatch_RuntimePolymorphism
Reference Date and Time in Java
Rules and use of Method Overriding
run()
Runtime Errors
Runtime Polymorphism
Select Chapter number from Topic Then go to index of Chapter and see files and labels
Some of the methods and work of LinkedList that are not in ArrayList
Some other terms like Association;Coupling;etc
start()
Starting Advanced Java
static
Strings
Super keyword use
Switch case break
Syntax Errors
Try-Catch Understand
Types of Errors
Types of Java Exceptions
Unchecked Exception in brief
Use concepts of Thread and obtain concurrency
Use of continue statement in loop
Use of throw keyword
Use of throws keyword
Used for Strings or Integer or characters.
Using Gregorian Calendar to print 24 and 12 hour clock time and date also in dd/mm/yyyy format
Variables
Varrags(VariableArguments) allows the method to accept zero or multiple arguments
void
We write a method once and use it many times
What are Thread Methods?
What is a thread
What is abstract?
What is an anonymous class?
What is ArrayDeque?
What is constructor?
What is gregory calendar?
What is hashing in Java and example and why it is used?
What is HashSet?
What is interface?
What is Java Package
What is lambda expression?
What is this and super keyword in Java
Which is more convenient?
While Loop
Working of Compiler and Interpreter
Write a code which allows user to keep accessing an array until a valid index is given
Write a code in which a thread is executed infinitely after 10 seconds of running the code
Write a code which gives us the state of the thread(i.e -if thread is new or runnable)
Write a code which satisfies-Each subject marks atleast 33% and overall atleast 40%
You have 5 chances

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