Control Flow

Conditionals (if, switch)

Explanation:
Control flow constructs allow programs to make decisions based on conditions. Java supports if, if-else, nested conditions, and the switch statement. These tools enable adaptive and intelligent program behavior. switch is optimized for multiple-choice scenarios and supports strings, enums, and primitive values.

Code:

int score = 85;
if (score > 90) {
    System.out.println("Excellent");
} else if (score > 75) {
    System.out.println("Good");
}

Technical Example:
User authentication systems branch logic based on user roles (admin, editor, viewer).

Use Cases:
• Business logic
• Input validation
• Decision-driven workflows

Loops (for, while, do-while)

Explanation:
Loops allow repetition of tasks until a condition is met. Java supports three primary loop types:
• for – Best for counting iterations
• while – Best when condition-controlled
• do-while – Executes at least once

Loops are essential for processing collections, generating sequences, performing computation, and interacting with data streams.

Code:

for (int i = 0; i < 5; i++) {
    System.out.println("Count: " + i);
}

Technical Example:
Data processing pipelines iterate over large datasets using loop constructs.

Use Cases:
• Data structure traversal
• File reading operations
• Simulation and modeling