#12 If else in Java

Published: 16 January 2023
on channel: Telusko

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In this lecture we are discussing:
1)What is conditional statements?
2)types of conditional statements
a) if-else
b) switch (next lecture)
c) ternary operator (next lecture)
d) nested if-else (next lecture)
e) if-else-if ladder (next lecture)

3)syntax of if-else
4)example on if-else condition

#1
-- conditional statement is a statement that can be true or false.
-- suppose if ask student is pass. (answer yes or no)
-- this type of statement of statement is conditional statement.

#2
In this part we are only discussing about if-else and
in next lecture we are discussing if-else-if ladder, ternary operator and switch statement.

#3
syntax of if-else

-- condition is either true or false after evaluation
-- remember like c and c++, we cannot use number directly as condition of if-else
- if(5) -- not allowed in java
-- you get Type mismatch: cannot convert from int to boolean
if(condition)
{
//code
//either this part execute
}

else
{
//code
//or this part execute
}

#4
example:
if want to check a given number is even or odd then;
int num=13;
if(num%2==0)
System.out.println("Even"); //here we not use braces for single statement {}

else
System.out.println("Odd"); // here we not use braces {}

Note: for single statement braces is not required but for multiple statement it is required.

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