if, if-else, and if-else-if Decision Ladders0%

if, if-else, and if-else-if Decision Ladders

Beginner12 min read•Updated: 2026-10-22

🌿 if, if-else, and Decision Ladders in Java

Introduction

Control flow statements determine the path of execution based on boolean conditions. The if-else-if ladder checks conditions sequentially from top to bottom, executing the first branch that evaluates to true.

🏛️ Syntax & Structure

1public class GradingSystem {
  public static void main(String[] args) {
      int percentage = 84;
4 
      if (percentage >= 90) {
          System.out.println("Grade: A+ (Outstanding Honors)");
      } else if (percentage >= 75) {
          System.out.println("Grade: A (First Class with Distinction)");
      } else if (percentage >= 60) {
          System.out.println("Grade: B (First Class)");
      } else if (percentage >= 40) {
          System.out.println("Grade: C (Pass)");
      } else {
          System.out.println("Grade: F (Failed - Remedial Required)");
      }
  }
17}

💡 Best Practices:

1
Always enclose conditional blocks in curly braces {}, even for single statements. Omitting braces is a frequent source of bugs.
2
Order conditions from most specific to most general in if-else-if ladders.

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Ternary Operator (? :)

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Standard Console Input: java.util.Scanner and System.out Formatting	Ternary Operator (? :)

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Ternary Operator (? :)

if, if-else, and if-else-if Decision Ladders

Beginner12 min read•Updated: 2026-10-22

Study Materials

🌿 if, if-else, and Decision Ladders in Java

Introduction

🏛️ Syntax & Structure

1public class GradingSystem {
  public static void main(String[] args) {
      int percentage = 84;
4 
      if (percentage >= 90) {
          System.out.println("Grade: A+ (Outstanding Honors)");
      } else if (percentage >= 75) {
          System.out.println("Grade: A (First Class with Distinction)");
      } else if (percentage >= 60) {
          System.out.println("Grade: B (First Class)");
      } else if (percentage >= 40) {
          System.out.println("Grade: C (Pass)");
      } else {
          System.out.println("Grade: F (Failed - Remedial Required)");
      }
  }
17}

💡 Best Practices:

1
Always enclose conditional blocks in curly braces {}, even for single statements. Omitting braces is a frequent source of bugs.
2
Order conditions from most specific to most general in if-else-if ladders.

Next Lesson

Ternary Operator (? :)

Continue learning with hands-on practice, examples, and exercises in the upcoming topic.

Related Lessons

Previous Lesson	Next Lesson
Standard Console Input: java.util.Scanner and System.out Formatting	Ternary Operator (? :)

Practice Quiz

Test your understanding of this lesson with 1 questions. Each question has one correct answer.

Previous Next