Flow of Program
Intro to Java
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Types of Languages
types of languages :- 1)Procedual 2)Functional 3)Object Oriented 1)Procedual languages ka matlab hota haa a series of well structure steps and produce to compose a program contain karta ha ake systematic order of statements and command to complete the task. 2)Functional Languages ise mae hum functions ka use karta haa we can reuse again and again it is a program only in pure function jo ke never modify variables, but only create new one as an output use hum asa jagha karta haa jaha pae we have to perform lots of different operations on the same set of data first class function. first class function ka matlab ja par bhi ake function ko dusra function mae reassign kara toa first class function. a = 10; c = a; 3)Object oriented : - the code file and data combine together to form a object revolve around objects code + data = object developed to make it easier to develop, debug, reuse , and maintains software
Static vs Dynamic languages
Static languages :- japar bhi datatype dena padta haa like java (int a, String b) perform type checking at compile time Error will show at compile time Declare data type before we use it (int, String , Float a ) like in java More control Dynamic languages : - jaha par bhi data types mention karna ka jarut an pada like in javascript (var a = 10) Perform type checking at runtime Error might not show till program is run No need to declear data type of variables save time while writing code but might give error at runtime * I have to read about runtime error and compile-time error Memory management variable refrence and function ka memory stack mae save hota haa vahi par value or we say object heap memory mae save hoat haa variable a reference dea raha haa object 10 ko Garbage collection :- jab kisi object ka name an ho toa ya garbage collection apena ape remove kar d...
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