Q4: Java Objects and Reference Types Quiz

What is the main difference between primitive types and reference types in Java?

• Primitive types and reference types both store the address of the value in memory.

• Primitive types and reference types store the value directly in memory.

• Primitive types store the address of the value in memory, while reference types store the value directly.

• Primitive types store the value directly, while reference types store the address of the value in memory.

What does the 'new' keyword in Java represent when creating an object?

• Object deletion

• Data retrieval

• Value assignment

• Memory allocation

What is the significance of using reference types in Java?

• Reference types provide performance advantages and allow for easy copying of variables.

• Reference types make the code more complex and difficult to manage.

• Reference types have no significance in Java programming.

• Reference types are used only for primitive types in Java.

What is the potential issue with passing around references to objects in Java?

• Passing references to objects is not allowed in Java programming.

• It has no potential issues as long as the references are used carefully.

• It can lead to referential issues where the original object can be corrupted by incorrect usage.

• It can lead to performance degradation but does not affect the original object.

What happens when a reference type variable is passed as a parameter to a function in Java?

• The function can only read the original object but cannot modify it.

• A copy of the reference is made, allowing the function to access and modify the original object.

• The reference is deleted from the original variable, making it inaccessible to the function.

• The original object is duplicated, creating a separate instance for the function to use.

What is the purpose of the 'new' keyword in Java when creating objects?

• To retrieve data from the object

• To delete the object from memory

• To assign a value to the object

• To allocate memory for the object

How are primitive types and reference types stored in memory in Java?

• Primitive types store the address of the value in memory, while reference types store the value directly.

• Primitive types and reference types store the value directly in memory.

• Primitive types and reference types both store the address of the value in memory.

• Primitive types store the value directly, while reference types store the address of the value in memory.

What is the main advantage of using reference types in Java?

• Reference types make the code more complex and difficult to manage.

• Reference types allow for easy copying of variables and provide performance advantages.

• Reference types are used only for primitive types in Java.

• Reference types have no advantages over primitive types in Java programming.

What is the potential issue with passing around references to objects in Java?

• It can lead to referential issues where the original object can be corrupted by incorrect usage.

• Passing references to objects is not allowed in Java programming.

• It has no potential issues as long as the references are used carefully.

• It can lead to performance degradation but does not affect the original object.

What is the purpose of the 'new' keyword in Java when creating objects?

• To allocate memory for the object

• To delete the object from memory

• To assign a value to the object

• To retrieve data from the object