Consider the foo method defined on line 12. Which of the following is this an example of? public abstract class One{ int x = 5; public void foo(){ System.out.print("one,"); } } 1 2 3 4 public class Two extends One{ public void foo(int y){ System.out.print(y + ","); super.fo0(); } } 8 9 public class Three extends Two{ public void foo(String s){ System.out.print(s + ","); this. foo(); ) public void foo(){ x = x; super.fo0(this.x); } 10 11 12 13 14 public class Four extends Two{ public void foo(){ super.foo(); System.out.print("four,"); } } 15 16 17

Consider the foo method defined on line 12. Which of the following is this an example of? public abstract class One{ int x = 5; public void foo(){ System.out.print("one,"); } } 1 2 3 4 public class Two extends One{ public void foo(int y){ System.out.print(y + ","); super.fo0(); } } 8 9 public class Three extends Two{ public void foo(String s){ System.out.print(s + ","); this. foo(); ) public void foo(){ x = x; super.fo0(this.x); } 10 11 12 13 14 public class Four extends Two{ public void foo(){ super.foo(); System.out.print("four,"); } } 15 16 17

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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Explain the following Java Interface code in details.
java lang
methode code below abstract class Method { // declaration of variables protected int input; protected String output; // Abstract methods public abstract boolean isHard(); public abstract String specificWay(); public abstract void Method(); public abstract void Method(int input, String output); // Getter methods for the input field public int getInput() { return this.input; } // Setter methods for the input field public void setInput(int input) { this.input = input; } // Getter methods for the output field public String getOutput() { return this.output; } // Setter methods for the output field public void setOutput(String output) { this.output = output; } // Custom string representation of the object public String toString() { return "Method"; }}