What is the Difference Between Package and Interface in Java?
🆚 Go to Comparative Table 🆚In Java, packages and interfaces serve different purposes and are used in distinct contexts. Here are the key differences between them:
- Purpose: Packages are used to organize related classes and interfaces into a single unit, while interfaces define a contract for classes to implement.
- Syntax: Packages are declared using the
package
keyword, while interfaces are declared using theinterface
keyword. - Usage: Packages group classes and interfaces based on functionality, whereas interfaces define method signatures that classes implementing the interface must provide implementations.
- Accessibility: Packages can have access modifiers to control visibility, while interface methods are implicitly public and abstract.
- Inheritance: Packages do not support multiple inheritance, but interfaces do, as a class can implement multiple interfaces.
To summarize, packages are used to organize and structure code, while interfaces provide a way to achieve abstraction and support multiple inheritances in Java.
Comparative Table: Package vs Interface in Java
Here is a table highlighting the key differences between packages and interfaces in Java:
Characteristics | Package | Interface |
---|---|---|
Purpose | Organize related classes and interfaces into a single unit | Define a contract for classes to implement |
Syntax | Declared using package keyword | Declared using interface keyword |
Usage | Group classes and interfaces based on functionality | Define method signatures that classes implementing the interface must provide implementations |
Accessibility | Packages can have access modifiers to control visibility | Interface methods are implicitly public and abstract |
Packages are a mechanism for organizing related classes and interfaces into a single unit, making it easier to group classes and interfaces based on functionality and manage the codebase. On the other hand, interfaces are used to define a contract for classes to implement, specifying method signatures that must be provided by the classes implementing the interface.
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