JavaClass/First Class.txt at main · akshaychromule61/JavaClass · GitHub

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Need to complete section 3

install eclipse - elips downloads-  2021-12
ecies ie frenteprice java and web developer -second optionns

first project in java
number system and memory units;-
4 num systems
binary 0-1
octal 0-7,
decimal0-9, hexa decimal
how to covert binary to decimal, decimalto binary
flopy disk
in 8 bits store 255 decimal store and 277 octal val
java online computeryes
out of8 bits1 bit is used forsignature
syso ctrl+space shortcut

Why reference type cannot be denoted in small letters?
what is the sizze of address sir ?how many bytes
how many bytes address size take?
what is type casting
codeblocks to learn C language in college turbo C

perators injava
how java code executed
jvac, java- cmiler runtime
type casting in java
simple programs using java
******************************************
Value Type vs Reference type
-value data is stored in stack and reference type data is stored in heap
-value type vriable holds the data and data refrence type variableholdthe address
-vlue type have fixed size and reference not have fixed size
-value type : int float double,.. referece type: String
******************************
Operators in java
Arithmetic +-%/
Relational < > <= >=
Logical && ||
Bitwise & ! ^
Shift >> <<
Unary
Assignment
type casting in java

control structures in java
1 branching - if, if else, switch case
2 looping - while loop, do-while,

Functions and Arrays
OOP concepts in java
4 pillersof oops concepts
**********************************
byte -128 to 127 range
short
int
long
float
double
char
String
boolean
*****************************
Mutable :- if you can change the value of a variable in the same address its called
value type ar mutable:- int float double all these
Immutable:- if you can not change the value of a variable in the same address its called
String

String pooling concept

*******************************
intsall git in system
git init - to intilise the folder
create project n same folder create program
git add. -add new project in staging
git commit -m "message" - commit the to your local repository

git status
  git config --global user.email "akshaychormule61@gmail.com"
  git config --global user.name "Akshay Chormule"

th main comment to push the chages into guthub
git orgin---
git branch -M main
git push -u origin main

**********************************
3rd Class 19/02/2021
*control structure
 - if
 - if else
 - switch
 - conditional / ternary operators
   e.g result=(n%2==0)?"even":odd -- conditional operator

Scanner obj = new Scanner(System.in) - take input from USER
*funtions learned factorial function
*arrays
 a2- how to storevalue, retrive value and workwith array

Home work day 3
   1 WAJP to read 5 numbers from user and print the umber using
for loop,foreach loop
   2 WAJAP to read 5 umber from user and find sum and avg?
   3--- 5 umbers and fid biggest number?

   4--- 5 number from user and sort them using bubble sort

what is mean by capital punishment?

*OOP
   4 pillers
	encapsultion(group of similar funcions &varible in one class),
        inheritnce,
        polymorphism,
        Abstraction
	class group of vriable and method that deal with variable
UML mens wht?class diagrams UMLi

*encapsulations
*access modifires
*constructors