If and If else?

1. If statement is working if a condition is true and if not, it will be skipped

// it can be executed or not

2. If-else statement is working whether it is true or not

// it will be executed in any case

3. Else-if statement is for the new condition, not true or false, for something else

// so we can add many options and conditions

if (score >= 90) {
	System.out.println("Grade A");
} else if (score >= 80) {
	System.out.println("Grade B");
} else if (score >= 70) {
	System.out.println("Grade C");
} else if (score >= 60) {
	System.out.println("Grade D");
} else {
	System.out.println("Grade F");
} // end of if