if else condition check in Java with nested if

Syntax of while loop If condition in Java

if ( condition ){
	// code block to execute
}

condition : Check the logic and it should return true or false.

The code block is executed only if the condition is true

Example 1

 	int mark=86;	
	if ( mark >80) {
		System.out.println("More than 80");
	}

Output

More than 80

Understanding condition

In place of using integer variable , we will use one Boolean variable with initial value set to true.

   	boolean my_condition=true;
		
	if( my_condition ) {
	   	 System.out.println(my_condition);
	}

Output is

true

if else

We will execute another code block by using else if our condition returns false. if else condition in Java

int mark=76;	
if ( mark >80) {
	System.out.println("More than 80");
}
else {
	System.out.println("Less than 80");
}

if else if

If condition returns false then we can add one more condition check by using else if.

int mark=76;	
if ( mark >80) {
System.out.println("More than 80");
}
else if(mark>50) {
System.out.println("More than 50");
}

if else if else

Example

int mark=46;	
if ( mark >80) {
 System.out.println("More than 80");
}
else if(mark>50) {
 System.out.println("More than 50");
}
else {
 System.out.println("Less than 50");
}

Example

	   	int mark=46;	
		if ( mark >=80) {
			System.out.println("80 or more");
		}
		else if(mark>=50) {
			System.out.println("50 or more");
		}
		else if(mark >=30 ){
			System.out.println("30 or more");
		}

Nested if

Find the greatest of three given numbers.

	   	int i=11,j=10,k=9;	
		if ( j>i) {
			if(j>k) {
			System.out.println("Highest:" + j);
			}
			else {
			System.out.println("Highest:" + k);	
			}
		}
		else if(i>k){
			System.out.println("Highest:"+ i);
			}
			else {
			System.out.println("Highest:" + k);
			}

For Loop do while loop while loop Java - Tutorials

if else condition checking