can you give me a background explanation i can use to approach this problem? Consider the three classes **Alpha**, **Beta**, and **Gamma**. What is the output of the following code that uses these classes?```javaAlpha a = new Alpha();Beta b = new Beta();System.out.print(a.getOne());System.out.print(b.getOne());System.out.print(a.getFour());System.out.print(b.getFour());```**Output**: `114four`Here is a detailed overview of the class definitions:### Class Definitions1. **Class Alpha** - Extends the abstract class `Gamma`. - Contains two methods: - `getTwo()`: Returns the string `"2"`. - `getTwo(int i)`: Returns the string `"two"`. ```java public class Alpha extends Gamma { public String getTwo() { return "2"; } public String getTwo(int i) { return "two"; } } ```2. **Class Beta** - Extends the abstract class `Gamma`. - Contains two methods: - `getThree()`: Returns the string `"3"`. - `getFour()`: Returns the string `"four"`. ```java public class Beta extends Gamma { public String getThree() { return "3"; } public String getFour() { return "four"; } } ```3. **Abstract Class Gamma** - Contains two methods: - `getOne()`: Returns the string `"1"`. - `getFour()`: Returns the string `"4"`. ```java public abstract class Gamma { public String getOne() { return "1"; } public String getFour() { return "4"; } } ```### Explanation of the Output- `a.getOne()`: Calls the `getOne()` method from `Gamma`, returning `"1"`.- `b.getOne()`: Calls the `getOne()` method from `Gamma`, returning `"1"`.- `a.getFour()`: Calls the `getFour()` method from `Gamma`, returning `"4"`.- `b.getFour()`: The `Beta` class overrides `getFour()`, returning `"four"`.Thus, the combined output is `114four`.

Consider the given code: Alpha a=new Alpha(); Beta b=new Beta();…

Answered: What is the output of the following…

Engineering

Computer Science

What is the output of the following code that uses these classes?

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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Concept explainers

OOPs

In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.

Constructor

The easiest way to think of a constructor in object-oriented programming (OOP) languages is:

Question

can you give me a background explanation i can use to approach this problem?

Consider the three classes **Alpha**, **Beta**, and **Gamma**. What is the output of the following code that uses these classes?

```java
Alpha a = new Alpha();
Beta b = new Beta();
System.out.print(a.getOne());
System.out.print(b.getOne());
System.out.print(a.getFour());
System.out.print(b.getFour());
```

**Output**: `114four`

Here is a detailed overview of the class definitions:

### Class Definitions

1. **Class Alpha**
- Extends the abstract class `Gamma`.
- Contains two methods:
- `getTwo()`: Returns the string `"2"`.
- `getTwo(int i)`: Returns the string `"two"`.

```java
public class Alpha extends Gamma {
public String getTwo() {
return "2";
}
public String getTwo(int i) {
return "two";
}
}
```

2. **Class Beta**
- Extends the abstract class `Gamma`.
- Contains two methods:
- `getThree()`: Returns the string `"3"`.
- `getFour()`: Returns the string `"four"`.

```java
public class Beta extends Gamma {
public String getThree() {
return "3";
}
public String getFour() {
return "four";
}
}
```

3. **Abstract Class Gamma**
- Contains two methods:
- `getOne()`: Returns the string `"1"`.
- `getFour()`: Returns the string `"4"`.

```java
public abstract class Gamma {
public String getOne() {
return "1";
}
public String getFour() {
return "4";
}
}
```

### Explanation of the Output

- `a.getOne()`: Calls the `getOne()` method from `Gamma`, returning `"1"`.
- `b.getOne()`: Calls the `getOne()` method from `Gamma`, returning `"1"`.
- `a.getFour()`: Calls the `getFour()` method from `Gamma`, returning `"4"`.
- `b.getFour()`: The `Beta` class overrides `getFour()`, returning `"four"`.

Thus, the combined output is `114four`.

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