if-else-if Statement

Lesson 4 of 11 in Coddy's Control Statements in Java course.

As of now, we know to write a decision statement for a true condition and a false condition, but if I want to decide based on two conditions, then we use an if-else-if statement.

If I want to decide whether or not to go to work based on whether or not it is raining, I would execute a false while also checking another condition, resulting in multiple else-ifs.

The if statement is followed by multiple else-if statements.

It is the chain of if-else statements that creates a decision tree where the program may enter the block of code where the condition is true.

Syntax:

if(condition 1) {   
    statement 1; //executes when condition 1 is true   
}  
else if(condition 2) {  
    statement 2; //executes when condition 2 is true   
}  
else {  
    statement; //executes when all the conditions are false   
}

Challenge

Easy

Write a program to accept an integer and check if the number is positive, negative or zero.

Use if-else-if statement and return POSITIVE, NEGATIVE or ZERO.

Try it yourself

class NumberCheck {
    public static String numberCheck(int a1) {
        // Write code here
    }
}

All lessons in Control Statements in Java

1What are Control Statements?

Introduction

4Jump Statements

Break Statement Continue Statement

2Decision Making Statments

Simple if Statement if-else Statementif-else-if StatementNested if-Statement Switch Case Statement

3Loop Statements

For Loop Do-while Loop While Loop