Simplicity is a core principle of clean code. When your code is simple, it is much easier to read, understand, and maintain. Simple code helps you and other developers quickly see what is happening, which makes it easier to spot and fix mistakes.

By focusing on simplicity, you avoid confusing logic, unnecessary complexity, and hidden bugs. This leads to fewer errors and makes your codebase more reliable. As you learn to write simple code, you will find it easier to make changes and add new features without breaking what already works.

In this chapter, you will learn practical ways to keep your Java code simple, clear, and effective.

Practical Techniques for Keeping Code Simple

Keeping your code simple makes it easier to read, maintain, and debug. Here are practical techniques you can use:

Break Problems Into Smaller Functions

• Divide large tasks into smaller, single-purpose functions;
• Each function should do one thing and do it well;
• Use descriptive names for functions, such as calculateTotalPrice or sendEmailNotification.

Avoid Unnecessary Complexity

• Do not add features or logic that are not needed right now;
• Prefer straightforward solutions over clever or complicated ones;
• Remove duplicate code by reusing functions or methods.

Use Clear, Direct Logic

• Write conditional statements that are easy to follow, such as if (isActive) instead of complex nested conditions;
• Choose variable names that clearly describe their purpose, like userCount or orderAmount;
• Keep code blocks short and focused on a single task.

By following these techniques, you make your code more understandable for yourself and others. Simple code leads to fewer bugs and easier updates.