Continuous Test Orchestration And Execution Platform Online

Perform automated and live-interactive testing on 3000+ real desktop and mobile devices online.

Explain the Diamond problem in Java

When it comes to inheritance, the diamond problem is a prevalent issue in Java. A common feature of object-oriented programming languages like C++, Java, etc., is inheritance. There are various inheritance patterns, including hybrid, single, multiple, and multi-level inheritances. Multiple inheritances, where one class can inherit properties from numerous classes, is something that Java does not permit. It is referred to as the diamond problem.

The diamond problem can be solved by using default methods and interfaces. With the help of these two concepts, multiple inheritances are possible. The abstract method and the default method are comparable. The only difference is that it is defined inside the interfaces with the default implementation. You don't need to override these procedures since they have already begun to use these interfaces.

Interfaces have the benefit of allowing identical default methods with the same name and signature to existing in two separate interfaces. It allows us to implement these two interfaces from a class. The interface name must explicitly replace the default methods.


Test your websites, web-apps, or mobile apps seamlessly with LambdaTest.

Start Free Testing

Earn resume-worthy Selenium certifications that help you land a top job.

Learn More

Test your web or mobile apps

Test orchestration and execution cloud of 3000+ browsers and OS


24/7 support


Enterprise grade security


Fastest test execution cloud