Basic Java =
1.Conditional Statements
if, if_Else Switch
2.Loops
for, while, do_while
3.Data Types
int, long, boolean, float, double
Sel Java = Basic Java + Array + String Functions + Java OOPS:
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Premchand Vishwakarma
Manual Testing
ISTQB
Java
Automation Testing
Selenium
Jmeter
POSTMAN
Rest-Assured
Sikuli
Appium
Cucumeber
ISTQB - 3 Certification
CP-SAT
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What is Java?
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>It is High Programming Language
>It is Platform Independant(Suports Multiple OS i.e Windows, Linux, MAC etc)
It was First Language which given Facility of WORA(Write Once & Run AnyWhere)
>It is free
>It is Opensource
>It is Secure
>It supports Multi-Threading(Can run Multiple Programme at a time).
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JDK & JRE
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Java is Compiler & Intepreted Language both
1.Compiler executed Whole programme in Single Attempt
2.Interpreter executed the programme line by line
demo.java > Compiler > demo.class > JVM(Contains Interpreter) > 01's
HL Middle Level (Which is Machine level)
Language
(ByteCode)
If You want to Write Java Programme
1.JDK (Which tells your System what is Rules & Protocol of Java)
Java 8 or Java 11
2.Editor (NotePad, Notepad++, eclipse, NetBean etc.)
Data Types:
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>int 4 bytes = 32 bits = 2^32
>long 8 bytes = 64 bits
>short 2 bytes = 16 bits
>boolean 1 bit
>float 4 bytes
>double 8 bytes
>char 2 bytes
>String (It is Collection of Charactor)
Arithmatic Operator:
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+
-
*
/
% (Mod)
9/2 = 8
9%2 = 1
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Comparision Operator:
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>
<
>=
<=
==
!=
Logial Operator:
------------------
&&
||
!
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Fibonacci Series:
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a b c
0, 1, 1, 2, 3, 5, 8, 13, 34
a b c
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What is Array : It is Collection of Similar Kind of Data
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