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 the definition of classes and interfaces in the given diagram using following details: a) Interface shape has a method draw(). b) Override the method draw() in all subclasses. c) Define a non-abstract method fillColor() in Circle class. (I want the complete solution using the codes in bluej program also diagram) bluej java cood

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…

1.Abstract classes, 2.abstract methods  3.Interfaces are three important OOP concepts. Give an example where each would be appropriate to use