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

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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