Good quality code in Java (or any programming language) is code that is not only functional but also maintainable, readable, and efficient. Here are some key characteristics and practices that contribute to writing high-quality Java code:

1. Readability
Clear Naming Conventions: Use meaningful and descriptive names for variables, methods, classes, and other identifiers. Follow standard Java naming conventions (e.g., camelCase for variables and methods, PascalCase for classes).
Consistent Formatting: Maintain consistent code formatting and indentation. Use tools like Checkstyle or IDE formatting settings to ensure uniformity.
Comments and Documentation: Write comments to explain complex logic and provide context. Use Javadoc comments for public methods and classes to describe their purpose and usage.
2. Maintainability
Modularity: Break your code into smaller, reusable methods and classes. Each method should perform a single task (Single Responsibility Principle).
DRY Principle: Avoid duplicating code (Don’t Repeat Yourself). Use methods and classes to encapsulate reusable logic.
Encapsulation: Use access modifiers (private, protected, public) to control access to class members. Keep data members private and provide public getters and setters if necessary.
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