Lambda Expressions with One Parameter

Java-Lambda Expressions with One Parameter

Lambda Expressions with One Parameter When a lambda expression has only one parameter, it is not necessary to surround the parameter name with parentheses when it is specified on the left side of the lambda operator. For example, in the following program, ‘i->i*i’ is also a valid way to write the lambda expression. Program Program … Read more…

Lambda Expressions with Parameters

Java-Lambda Expressions with Parameters

Lambda Expressions with Parameters Following program shows the use of a parameter with a lambda expression. The two parameters, n and v, are specified in the parameter list, separated by commas(first line in the main()). This example can be generalized. Whenever more than one parameter is required, the parameters are specified, separated by commas, in a parenthesized … Read more…

Lambda Expressions

Java-Lambda Expressions

Lambda Expressions Key to understanding Java’s implementation of lambda expressions are two constructs. The first is the lambda expression, itself. The second is the functional interface. A lambda expression is, essentially, an anonymous (that is, unnamed) method. However, this method is not executed on its own. Instead, it is used to implement a method defined … Read more…

Private Interface Methods

Java-Private Interface Methods

Private Interface Methods Beginning with JDK 9, an interface can include a private method. A private interface method can be called only by a default method or another private method defined by the same interface. Because a private interface method is specified private, it cannot be used by code outside the interface in which it … Read more…

Static Methods In Interface

Java-Static Methods In Interface

Static Methods In Interface Another feature added to interface by JDK 8 is the ability to define one or more static methods. Like static methods in a class, a static method defined by an interface can be called independently of any object. Thus, no implementation of the interface is necessary, and no instance of the interface … Read more…

Multiple Inheritance Troubles

Java-Multiple Inheritance Troubles

Multiple Inheritance Troubles In many real-life situations, we wish to define a class in such a way that it inherits the resources of several distinct classes. This type of inheritance is technically known as multiple inheritance. Java does not support this feature. Now that an interface can include default methods, you might be wondering if … Read more…