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Update index.md (#22083)

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Required changes and examples.
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akadidas
2018-10-30 03:57:24 +05:30
committed by Randell Dawson
parent 119719735d
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11
guide/english/java/basic-operations/index.md
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@ -7,12 +7,17 @@ Java supports the following operations on variables:
* __Arithmetic__ : `Addition (+)`, `Subtraction (-)`, `Multiplication (*)`, `Division (/)`, `Modulus (%)`,`Increment (++)`,`Decrement (--)`.
* __String concatenation__: `+` can be used for String concatenation, but subtraction `-` on a String is not a valid operation.
**In java ***+*** operator is overloaded on functionality to concatenate strings and to perform addition information**
* __Relational__: `Equal to (==)`, `Not Equal to (!=)`, `Greater than (>)`, `Less than (<)`, `Greater than or equal to (>=)`, `Less than or equal to (<=)`
* __Bitwise__: `Bitwise And (&)`, `Bitwise Or (|)`, `Bitwise XOR (^)`, `Bitwise Compliment (~)`, `Left shift (<<)`, `Right Shift (>>)`, `Zero fill right shift (>>>)`
**Always remember sign of greater and less than always come before assign i.e "="**
* __Bitwise__: `Bitwise And (&)`, `Bitwise Or (|)`, `Bitwise XOR (^)`, `Bitwise Compliment (~)`, `Left shift (<<)`, `Right Shift (>>)`, `Zero fill right shift (>>>)`.
**Bitwise operators are used to perform bitwise operation in places where calculation on binary numbers are required like-in ciphers,and to design virtual electronic circut replication etc. **
* __Logical__: `Logical And (&&)`, `Logical Or (||)`, `Logical Not (!)`
* __Assignment__: `=`, `+=`, `-=`, `*=`, `/=`, `%=`, `<<=`, `>>=`, `&=`, `^=`, `|=`
* __Others__: `Conditional/Ternary(?:)`, `instanceof`
* __Assignment__: `=`, `+=`, `-=`, `*=`, `/=`, `%=`, `<<=`, `>>=`, `&=`, `^=`, `|=`
* __Others__: `Conditional/Ternary(?:)`, `instanceof`
**Ternary because it work on the functionality of If Then Else i.e If condition is right then first alternative anotherwise the second one **
While most of the operations are self-explanatory, the Conditional (Ternary) Operator works as follows:
`expression that results in boolean output ? return this value if true : return this value if false;`