Iterative Statements
Explore Java iterative statements to understand how to write clean, efficient loops for repeating code. Learn to control loops using for, while, and do-while constructs, apply break and continue for flow control, and iterate over arrays safely. This lesson equips you with core skills to manage repetition and data traversal in Java programming.
Repetition is a core part of programming. We often need to run the same logic many times: processing items, counting values, retrying a failed network connection, or scanning through data. Instead of copying and pasting code blocks, we use loops to express this repetition cleanly and safely. Loops let us focus on the task rather than the mechanics of repeating it.
What loops solve
Loops give us structured repetition. Every loop follows the same general pattern:
A starting point.
A condition that controls whether we keep going.
A block of code that runs on each pass.
Some update that moves us toward stopping.
Understanding these parts helps us pick the right loop for a task.
The while loop
The while loop is the simplest form of repetition in Java. It repeatedly executes a block of code as long as a specified boolean condition remains true.
The key characteristic of a while loop is that it checks the condition before running the code. If the condition is false from the start, the loop body never executes. This makes it ideal for scenarios where we do not know exactly how many times we need to loop, such as reading data until ...