Answered: P2.4.4 The commands cd ../dir2 and cd…

P2.4.4 The commands cd ../dir2 and cd ..; cd dir2 are equivalent. However, if one issues next the command cd - the results are different. Explain.

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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Assume that all source files are in the same package. Note that some lines may wrap, but are still considered on one line. Examine the code below. Recall that variables have four kinds of scope: static, instance, local, and block. For each variable listed below, identify its scope (static, instance, local, or block) and describe the scope using complete sentences. An example description is provided, after the code listing, for the ounces variable in the Beverage2 class. Please describe the scope for the following variables: The num variable in the Beverage2 class The price variable in the Beverage2 class The shots variable in the Espresso class The b variable in the TestBeverage2 class The j variable in the TestBeverage2 class public abstract class Beverage2 { private static int num; private int ounces; private double price; protected Beverage2(int ounces, double price) { this.ounces = ounces; this.price = price;…
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