Summary  
A while loop is a control flow construct that repeatedly executes a block of code as long as a specified condition remains true, following the steps of initialization, condition checking, body execution, and iteration update.  

General domain of usage  
performing repetitive calculations

## Introduction to the while Loop

Loops help you repeat actions in your Java programs without writing the same code multiple times. The **while loop** is a fundamental tool for this purpose. It keeps running a block of code as long as a specific condition remains `true`. This allows you to process data, check user input, or perform calculations until a certain requirement is met.

Here is the basic idea of a **while loop** in pseudocode:

```
while (condition is true){
    // run this block of code
}
```

You use a **while loop** when you do not always know beforehand how many times you need to repeat an action. The loop checks the condition before every repetition, so as soon as the condition becomes `false`, the loop stops running.

You will learn how to write and control while loops, and see how they are used in real Java programs.

Imagine you want to calculate the sum of numbers from 1 to 5. Instead of adding 
each number manually, you can use a `while` loop to do it automatically.

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### Step-by-step breakdown of a `while` loop

1. **Initialization**: Set up the variable that will be used in the loop condition;
2. **Loop Condition**: The `while` loop checks a condition before each iteration; if the condition is `true`, the loop body runs;
3. **Loop Body**: Code inside the loop executes each time the condition is `true`;
4. **Iteration**: Update the loop variable inside the body to eventually make the condition `false` and end the loop.

#### Example
```java
int count = 1; // Step 1: Initialization
while (count <= 5) { // Step 2: Condition checked before each loop
    System.out.println("Count is: " + count); // Step 3: Loop body runs
    count++; // Step 4: Iteration (update variable)
}
```

- The loop starts with `count` set to 1;
- Each time, the condition `count <= 5` is checked;
- If `true`, the loop prints the current value and increases `count` by 1;
- When `count` becomes 6, the condition is `false` and the loop stops.


Which output will this code produce when run?

A beginner-friendly course designed to introduce learners to the fundamentals of loops in Java. Through a blend of clear explanations, practical examples, and hands-on tasks, students will gain confidence in using for, while, and do-while loops, as well as applying them to solve real-world problems.

Introduce the concept of loops, their necessity, and the basic structure of for, while, and do-while loops in Java. This section lays the foundation for understanding how repetition works in programming.

Dive deeper into different loop types, including do-while loops and nested loops, and learn how to control loop execution with break and continue.

Apply loop concepts to solve practical problems, including working with arrays and combining loops with conditionals.

while Loop in Java

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while Loop in Java