---
title: What are Decision Making statements?
description: "**What are Decision Making statements?** Decision-making statements allow a program to execute certain blocks of code based on specific conditions.  1. **if****Statement**: Executes a block of code if the condition is true. #### ***Example : if Statement*** ```javascript public class…"
url: "https://vinothqaacademy.com/docs/what-are-decision-making-statements/"
updated: "2025-10-05"
category: Java
tags:
  - Java
---

# What are Decision Making statements?

**What are Decision Making statements?**

Decision-making statements allow a program to execute certain blocks of code based on specific conditions. 

1. **if****Statement**: Executes a block of code if the condition is true.

#### ***Example : if Statement***

```javascript

                public class IfExample {

    public static void main(String[] args) {

        int age = 20;

        if (age >= 18) {

            System.out.println("You are eligible to vote.");

        }

    }

}

Output:
You are eligible to vote.
```

In this example, the condition *age >= 18* is true, so the message is printed.

2.***if-else*****Statement**: Executes one block of code if the condition is true, and another block if the condition is false.

#### ***Example : if-else Statement***

```javascript

                public class IfElseExample {

    public static void main(String[] args) {

        int age = 16;

        if (age >= 18) {

            System.out.println("You are eligible to vote.");

        } else {

            System.out.println("You are not eligible to vote.");

        }

    }

}

Output:
You are not eligible to vote.
```

Here, since *age >= 18* is false, the code in the *else* block is executed.

**3. else-if****Ladder**: Checks multiple conditions sequentially and executes the corresponding block of code for the first condition that is true.

#### ***Example : else-if Ladder***

```javascript

                public class ElseIfExample {

    public static void main(String[] args) {

        int marks = 85;

        if (marks >= 90) {

            System.out.println("Grade A");

        } else if (marks >= 80) {

            System.out.println("Grade B");

        } else if (marks >= 70) {

            System.out.println("Grade C");

        } else {

            System.out.println("Grade D");

        }

    }

}

Output:
Grade B
```

The program checks conditions sequentially until it finds a true condition. Since *marks >= 80*is true, "Grade B" is printed.

**4. *Nested if*** statements in Java are if statements placed inside another if statement. This structure is used to check multiple conditions, where each condition is dependent on the previous one.

#### ***Example : Nested-if ***

This program determines the largest of three numbers using nested if statements.

```javascript

                public class LargestNumberExample {

    public static void main(String[] args) {

        int num1 = 10;

        int num2 = 20;

        int num3 = 15;

        if (num1 >= num2) {

            if (num1 >= num3) {

                System.out.println("The largest number is: " + num1);

            } else {

                System.out.println("The largest number is: " + num3);

            }

        } else {

            if (num2 >= num3) {

                System.out.println("The largest number is: " + num2);

            } else {

                System.out.println("The largest number is: " + num3);

            }

        }

    }

}

Output:
The largest number is: 20
```

This program demonstrates how nested if statements can be used to evaluate multiple dependent conditions and make decisions based on those conditions.

**5. *switch* Statement**: Evaluates a variable and executes a block of code based on the matching case.

#### ***Example : switch Statement***

```javascript

                public class SwitchExample {

    public static void main(String[] args) {

        int day = 3;

        String dayName;

        switch (day) {

            case 1:

                dayName = "Sunday";

                break;

            case 2:

                dayName = "Monday";

                break;

            case 3:

                dayName = "Tuesday";

                break;

            case 4:

                dayName = "Wednesday";

                break;

            case 5:

                dayName = "Thursday";

                break;

            case 6:

                dayName = "Friday";

                break;

            case 7:

                dayName = "Saturday";

                break;

            default:

                dayName = "Invalid day";

                break;

        }

        System.out.println("Day: " + dayName);

    }

}

Output:
Day: Tuesday
```

The *switch* statement evaluates the *day* variable and executes the matching case.