Module 3: Control Flow

🔄 Conditional Statements

Control the flow of your program using if-else and switch statements.

                    int number = 10;
                    if (number > 0) {
                        System.out.println("Positive number");
                    } else {
                        System.out.println("Non-positive number");
                    }
                    
                    // Switch example
                    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("Another day");
                    }
                    

🔁 Looping Statements

Java provides several ways to repeat a block of code.

• for loop
• while loop
• do-while loop

                    // for loop
                    for (int i = 1; i <= 5; i++) {
                        System.out.println("i = " + i);
                    }
                    
                    // while loop
                    int j = 1;
                    while (j <= 5) {
                        System.out.println("j = " + j);
                        j++;
                    }
                    
                    // do-while loop
                    int k = 1;
                    do {
                        System.out.println("k = " + k);
                        k++;
                    } while (k <= 5);
                    

⏹ Break and Continue

Use break to exit a loop, and continue to skip an iteration.

                    for (int i = 1; i <= 10; i++) {
                        if (i == 6) break;      // exits loop when i is 6
                        if (i % 2 == 0) continue; // skips even numbers
                        System.out.println(i);
                    }