Conditional Operator ( if-else Statement)

Condition: if statement is used to test the condition. It checks boolean condition: true or false. There are various types of if statement in Java.

   If Statement

 

Syntax :

   If(condition)

{

//Statement     OR     code to be executed

}

 

Example :

 

Public class ifExample

{

Public static void main(String[] args)

{

Int age =20;

If(age>18)

{

System.out.println(“Age is greater than 18”);

}

}

}

 

2.    If-else Statement

 

Syntax :

If(condition)

{

//code if condition is true

}

Else

{

// code if condition is false

}

 

               Example :

Public classs ifElseExample

{

Public static void main(String [] args)

{

Int number = 13;

If(number%2==0)

{

System.out.println(“even number”);

}

Else

{

System.out.println(“odd number”);

}

}

}

 Leap Year

A year is leap, if it is divisible by 4 and 400. But, not by 100.

Public class leapyear

{

Public static void main(String[] args)

{

Int year =2020;

If(year%4==0) && (year%100!=0) || (year% 400==0)

{

System.out.println(“LEAP YEAR”);

}

Else

{

System.out.println(“COMMON YEAR”);

}

}

}

 

3.    If-else-if   : The if-else-if ladder statement executes one condition from multiple statements.

Syntax :

If(condition)

{

//code to be executed if condition1 is true

}

Else if(condition)

{

//code to be executed if condition2 is true

}

Else

{

//code to executed if all condition are false

}

Example :

Public class ifelseifexample{

Public static void main(String[] args){

Int marks =65;

If(marks<50){

System.out.println(“Fail”);

}

Elseif(marks>=60 && marks<70){

System.out.println(“D grade”)

}

Elseif(marks>=70 && marks<80){

System.out.println(“B grade”);

} Elseif(marks>=80 && marks<90){

System.out.println(“c grade”);

}else{

System.out.println(“Invaild”);

}

}

}

 

WRP to check positive, negative and zero?

 

Public class positivenegative

{

Public static void main(String[] args)

{

Int number = -15;

If(number>0)

{

System.out.println(“POSITIVE”);

}

Elseif(number<0)

{

System.out.println(“NEGATIVE”);

}

Else{

System.out.println(“ZERO”);

}

}

}

 

4.    Nested if Statement

Syntax :

If(condition){

//code to executed

}

If(condition){

//code to be excuted

}

Example :

 

Publiuc class nestedif{

Public static void main(Strings[] args)

{

Int age=20;

Int weight=80;

If(age>=18){

If(weight>50)

{

System.out.println(“Your are eligible to donate blood”);

}

}

}

}