Java Control Flow – if-else, switch & Loops Explained Introduction

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Java Control Flow – if-else, switch & Loops Explained Introduction · devs3

java

int marks = 75;

if(marks >= 90) {
    System.out.println("Grade A");
} else if(marks >= 75) {
    System.out.println("Grade B");
} else if(marks >= 50) {
    System.out.println("Grade C");
} else {
    System.out.println("Fail");
}

java

int day = 3;

switch(day) {
    case 1:
        System.out.println("Monday");
        break;
    case 2:
        System.out.println("Tuesday");
        break;
    case 3:
        System.out.println("Wednesday");
        break;
    default:
        System.out.println("Invalid day");
}

java

import java.util.Scanner;
import java.util.Random;

public class GuessNumber {
    public static void main(String[] args) {
        Random rand = new Random();
        int number = rand.nextInt(10) + 1; // 1-10
        Scanner sc = new Scanner(System.in);
        int guess;
        
        do {
            System.out.print("Guess a number (1-10): ");
            guess = sc.nextInt();
            
            if(guess < number) {
                System.out.println("Too low!");
            } else if(guess > number) {
                System.out.println("Too high!");
            } else {
                System.out.println("Correct! You win!");
            }
        } while(guess != number);
    }
}

Java Control Flow – if-else, switch & Loops Explained Introduction

What Is Control Flow?

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Java Spring Boot Http request cycle

Java spring boot development environment setup process step by step for windows 11

1️⃣ if-else Statements

Syntax:

Example:

else-if Ladder

2️⃣ switch Statement

Syntax:

Example:

3️⃣ Loops in Java

3.1 for Loop

3.2 while Loop

3.3 do-while Loop

4️⃣ Break & Continue

Example:

5️⃣ Combining Loops & Conditions

Common Beginner Mistakes

Summary

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What Is Control Flow?

Join the conversation

Comments

Keep reading

Java Spring Boot Http request cycle

Java spring boot development environment setup process step by step for windows 11

1️⃣ if-else Statements

Syntax:

Example:

else-if Ladder

2️⃣ switch Statement

Syntax:

Example:

3️⃣ Loops in Java

3.1 for Loop

3.2 while Loop

3.3 do-while Loop

4️⃣ Break & Continue

Example:

5️⃣ Combining Loops & Conditions

Common Beginner Mistakes

Summary

Next Article Preview 👀