Introduction to Programming

if...else if-...-else 

You can use this form to avoid creating nested blocks and make the code easier to read and understand. For example, look at the following code snippet:

  if(n > 5){    System.out.println("n > 5");  } else {    if (n == 5) {      System.out.println("n == 5");    } else {      if (n == 4) {        System.out.println("n == 4");      } else {        System.out.println("n < 4");      }    }  }}

These nested if...else statements can be replaced by if...else...if statements as follows:

if(n > 5){  System.out.println("n > 5");} else if (n == 5) {  System.out.println("n == 5");} else if (n == 4) {  System.out.println("n == 4");} else {  System.out.println("n < 4");}

Such code is easier to read and understand.

If you don't need to do anything when n < 4, you can leave out the last ...