Can be replaced with Lambda?

Note the replacement of an anonymous class with lambda is possible only if the anonymous class has one method. If the anonymous class has more methods the substitution is not possible. From oracle documentation: The previous section, Anonymous Classes, shows you how to implement a base class without giving it a name.

What is lambda in Android?

Lambda Expressions are one of the most important features added to Java 8. … Lambda expressions enables you to do just that, in a way that is much more compact and clear. In android for example, lambdas can replace anonymous inner class when providing event listeners.