Answered: In JAVA 1. Adapt the demo that creates…

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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Question

In JAVA

1. Adapt the demo that creates 3 separate threads.

2. The difference will be that instead of printing, the threads will have to open a file and read from the file. Finally they will print the contents of the file. There will be three files. FileA.txt, FileB.txt, File100.txt. As you can imagine, file A will contain only a characters, file B will contain only b characters, File100 will contain the numbers 1 through 100.

3. Finally, you will have to implement the yield(), sleep(), OR join() methods somewhere in your program. You only need one implementation somewhere in your code.

interface Animal{
public void speak();
}
class Cat implements Animal{
@Override
public void speak () {
}
}
class Dog implements Animal{
@Override
public void speak () {
}
System.out.println("Meow Meow");
}|
}
public class App{
System.out.println("Woof Woof");
}
public static void main(String [] args) {
Animal [] animals = {
new Dog(),
new Cat ()
};
for (Animal animal : animals){
animal.speak();
}

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