InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
What is the “Diamond problem” in Java? |
|
Answer» The “DIAMOND problem” usually happens in multiple inheritances. Java does not support multiple inheritances, so in the case of Java, the diamond problem occurs when you are trying to implement multiple interfaces. When two interfaces having METHODS with the same signature are implemented to a single class, it creates ambiguity for the compiler about which function it has to CALL, so it produces an error at the compile time. Its STRUCTURE looks similar to diamond thus it is called a “Diamond problem”. Here, if we try to access the print() function using the DerivedClass3 object, it will create confusion for the compiler that which copy of the print() function it has to call i.e., from DerivedClass1 or DervivedClass2. “Diamond problem” is solved by using virtual inheritance. It guarantees that the child class will get only one instance of the common base class. |
|