Explanation of Solution
Anonymous inner class:
- It is other inner class in the inner class that is defined without a name.
- It is used to the combine the process defining and instance creation of the class in one single step.
Modified code:
//define the class TestLamda
public class TestLambda
{
//main method
public static void main(String[] args)
{
//class gets initiated
TestLambda test = new TestLambda();
/*action gets defined using anonymous inner function*/
test.setAction2(new T2()
{
@Override
//method definition
public void m2(Double d)
{
//display the value
System.out.print(d + "");
}
});
/*action gets defined using anonymous inner class*/
System.out.println(test.getValue(new T3()
{
@Override
//method definition
public int m3(int e1, int e2)
{
//return value
return e1 + e2;
}
}));
//display the value
System...
Want to see the full answer?
Check out a sample textbook solutionChapter 15 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version, Student Value Edition (11th Edition)
- Can you implement the Derived Class Parameterized constructor? A solution is placed in the "solution" section to help you, but we would suggest you try to solve it on your own first. Implement the constructor Dell(String name) of the Derived Class Dell which takes a string, name. We have already implemented the Base Class Laptop with the member function getName() and a parameterized constructor. Input# Laptop name is being passed through the parameterized constructor. Output# getName() method is returing Laptop name. Sample Input# Dell dell = new Dell("Dell Inspiron"); Sample Output# "Dell Inspiron"arrow_forwardWrite a Java class Person for dealing with persons. Your class must have the following features:arrow_forwardWrite a Number class that holds a double, and add overloaded operators for +, –, *, /, and assignment. Choose the return values for these functions so that expressions can be chained together, and for efficiency. Write an automatic type conversion operator int( ). Please submit code inarrow_forward
- use java (ArrayList, inheritance, polymorphism, File I/O and basic Java) Student class: First, you need to design, code in Java, test and document a base class, Student. The Student class will have the following information, and all of these should be defined as Private: A first name (given name) A last name (family name/surname) Student number (ID) – an integer number (of type long) The Student class will have at least the following constructors and methods: (i) two constructors - one without any parameters (the default constructor), and one with parameters to give initial values to all the instance variables of Student. (ii) only necessary set and get methods for a valid class design. (iii) a reportGrade method, which you have nothing to report here, you can just print to the screen a message “There is no grade here.”. This method will be overridden in the respective child classes. (iv) an equals method which compares two student objects and returns true if they…arrow_forwardImplement the Rectangle class as discussed this week. Use the class declaration below. Your job is to implement the functions. Implement the missing functions yourself. class Rectangle{ private: double width; double length; char *name; void initName(char *); public://constructorsRectangle();Rectangle(double, double, char*);//destructor ~Rectangle(); void setWidth(double); void setLength(double); void setWidth(char *); void setLength(char *); void setName(char *); double getWidth() const; double getLength() const; void printName() const { cout << name; }}; A few notes on the functions: initName(char *): this is a private member function. It should be the only function which dynamically allocates a char array to hold the name. setName(char *): this is a public member function which changes the name of the rectangle to a new name. It does not dynamically allocate memory, it only changes name. Demonstrate your class works…arrow_forwardjava Write a simple class to represent a Student. Each student object should have the following data items: A first natne, a lasl name, a student ID, and a GPA. Think carefully about how you should model this data and write getter (query) and setter (command) methods for each. Override public boolean equals(Object o) so that two student objects that have the same student ID are seen as equalarrow_forward
- 1. How can we write a parameter less Lambda expression? a. Need to pass curly braces to denotes that there are no parameter on left side of the arrow.b. Pass empty set of parentheses on the left side of the arrow.c. In this particular case arrow is not required at all.d. No need to pass anything on the left side of the arrow. 2. Which of the following is NOT true about functional interface in Java? a. It has multiple methods that needs to be implemented.b. Lambda expression implicitly implement the single method inside functional interface.c. If a lambda expression is provided then the method name should not be provided.d. It has only a single method that needs to be implemented.arrow_forwardWrite a Java program that consists of at least three classes for Students, Employees and Courses registration in University. The program should be fully documented, and the following concepts should be applied: Defining a constructor with and without arguments. Use the setter, getter and toString methods Sending an object/s to a method and returning it as a return value. Defining array of objects and using loop/s and Scanner object/s for data entry. Defining the main method that integrates the whole project.arrow_forwardWtite a program in java language also give source code and output also.arrow_forward
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education