Write a Java program A2p1.java with a public class A2p1 and no named packages to read from stdin information for several singers and dancers. You should design a superclass Person with appropriate constructor(s) to initialize member variables such as name (of type String), sex (of type String) and age (of type int). You should design two additional subclasses Singer and Dancer of the Person class with appropriate constructor(s) to initialize additional member variables such as favorite (of type String). You can add the toString method to these three classes to provide a suitable string representation for objects of these classes. Put all four classes in the same file. A sample run can look like the following (you can also try running it with standard input redirection):

Write a Java program A2p1.java with a public class A2p1 and no named packages to read from stdin information for several singers and dancers. You should design a superclass Person with appropriate constructor(s) to initialize member variables such as name (of type String), sex (of type String) and age (of type int). You should design two additional subclasses Singer and Dancer of the Person class with appropriate constructor(s) to initialize additional member variables such as favorite (of type String). You can add the toString method to these three classes to provide a suitable string representation for objects of these classes. Put all four classes in the same file. A sample run can look like the following (you can also try running it with standard input redirection):

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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MUST BE IN ONE JAVA FILE Write a Java program A4p1.java with a public class A4p1 and no named packages to read from stdin information for several singers and dancers. You can try with the following design choices: design an abstract superclass Person with appropriate constructor(s) to initialize member variables such as name (of type String), sex (of type String), age (of type int), rank (of type int); design an interface Honorable with one method HowToHonor (of return type String); the Person class can have an abstract method HowToPerform (of return type String) and implement the Comparable interface; design two additional non-abstract subclasses Singer and Dancer of the Person class with appropriate constructor(s) and let them implement the Honorable interface. You can override the toString method of these three classes to provide a suitable string representation for objects of these classes. Put all classes and interfaces in the same file. A sample run can look like the following…
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