JavaElse If
The else if Statement
Use theelse if statement to specify a new condition if the first condition isfalse.
Syntax
if (condition1) { // block of code to be executed if condition1 is true} else if (condition2) { // block of code to be executed if the condition1 is false and condition2 is true} else { // block of code to be executed if the condition1 is false and condition2 is false}Think of it like real life:If it rains, bring an umbrella.Else if it's sunny, wear sunglasses. Else, just go outside normally.
Example
int weather = 2; // 1 = raining, 2 = sunny, 3 = cloudyif (weather == 1) { System.out.println("Bring an umbrella.");} else if (weather == 2) { System.out.println("Wear sunglasses.");} else { System.out.println("Just go outside normally.");}// Outputs "Wear sunglasses."Sinceweather is2, the first condition (weather == 1) is not met, so theif block is skipped. The program then checks theelse if condition (weather == 2), which istrue. That means theelse if block runs and prints "Wear sunglasses.".
Another Example
This example chooses between three different messages depending on the time of day:
Example
int time = 22;if (time < 10) { System.out.println("Good morning.");} else if (time < 18) { System.out.println("Good day.");} else { System.out.println("Good evening.");}// Outputs "Good evening."Example explained
In the example above, time (22) is greater than 10, so thefirst condition isfalse. The next condition, in theelse if statement, is alsofalse, so we move on to theelsecondition sincecondition1 andcondition2 is bothfalse - and print to the screen "Good evening".
However, if the time was 14, our program would print "Good day.":
Example
int time = 14;if (time < 10) { System.out.println("Good morning.");} else if (time < 18) { System.out.println("Good day.");} else { System.out.println("Good evening.");}// Outputs "Good day."
