exit"); Scanner sc = new Scanner(System.in); Bug bug = new Bug(); String ch= ""; while (!ch.equals("E")) {//loops until user inputs 0, M, T, or E System.out.println("(0) System.out.print("Enter System.out.println(); for output\n(M) for move\n(T) for turn\n(E) for your command: "); ch sc.next().toUpperCase(); if(ch.equals("0")) { System.out.println(bug); //changes a lower case input to upper case } else if (ch.equals("M")) { bug.move(); } else if (ch.equals("T")) { bug. turn();

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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This is the question: Design and implement a class called Bug, which represents a bug moving along a horizontal wire. The bug can only move for one unit of distance at a time, in the direction it is facing. The bug can also turn to reverse direction. For your design, create a UML Class diagram similar to Figure 5.5 on page 180 of the textbook. Note that you need to include the constructor in the methods section if you code a constructor. Bug will require a toString method to return the current position and which direction the bug is facing to the driver so it can be output.
Hint: Remember that a horizontal line has a zero position in the middle with positive to the right and negative to the
left. Consider that a bug will land on the wire at some point before starting along the wire.
Write an interactive test driver that instantiates a Bug, then allows the user to manipulate it with simple commands like Output (to see the position and direction), Move, Turn, Exit ... single letters work just fine. All output should be via the driver not methods within Bug. You should use this driver to create screenshot exhibits for a number of scenarios (e.g., output original position, move a few times, output, move a few more times, output, turn, output, move, output, etc.).

This is the answer based on Bartleby response: The error message is reported on line # 42, but there is no missing curly base per the Bartleby answer. I can't locate the problem for love or money. Losing marbles. Please help.

 

/**
* Write a description of class Bug here.
*
* @author (your name)
* @version (a version number or a date)
*/
public class Bug {
private int position; // current position
private boolean facingRight; //True means bug is facing right, else bug is
facing left
public Bug() { //Initial position: bug is at 0 and facing right
position
facingRight
}
public Bug(int pos) {
= pos;
true;
}
// method to turn the bug to other direction
public void turn() {
facingRight ! facingRight;//reversing value of facingRight true if
position
facingRight
false, false if true
}
0;
else
= true;
public void move() {// oves the bug
if (facingRight)
position++;
}
=
position--; //if the bug faces right, adds one unit of movement,
else takes away one unit of movement.
}
// returns a String containing bug's info
public String toString() {//string defining bug's position
return "Position: + position + ", Direction:
public class Driver {
+ (facingRight? "Facing Right": "Facing
Left");// returns facing right if bug is facing right, otherwise
//returns facing left.
II
}
import java.util.Scanner; // this is the error line: class, interface or enum
expected. There is no curly brace missing as program is written.
public static void main(String[] args) {
Transcribed Image Text:/** * Write a description of class Bug here. * * @author (your name) * @version (a version number or a date) */ public class Bug { private int position; // current position private boolean facingRight; //True means bug is facing right, else bug is facing left public Bug() { //Initial position: bug is at 0 and facing right position facingRight } public Bug(int pos) { = pos; true; } // method to turn the bug to other direction public void turn() { facingRight ! facingRight;//reversing value of facingRight true if position facingRight false, false if true } 0; else = true; public void move() {// oves the bug if (facingRight) position++; } = position--; //if the bug faces right, adds one unit of movement, else takes away one unit of movement. } // returns a String containing bug's info public String toString() {//string defining bug's position return "Position: + position + ", Direction: public class Driver { + (facingRight? "Facing Right": "Facing Left");// returns facing right if bug is facing right, otherwise //returns facing left. II } import java.util.Scanner; // this is the error line: class, interface or enum expected. There is no curly brace missing as program is written. public static void main(String[] args) {
exit");
Scanner sc = new Scanner(System.in);
new Bug();
ch =
Bug bug
String ch
while (!ch.equals("E")) {//loops until user inputs 0, M, T, or E
} } }
=
System.out.println("(0)
System.out.print("Enter your command: ");
sc.next().toUpperCase(); //changes a lower case input to upper case
3
System.out.println();
for output\n(M) for move\n(T) for turn\n(E) for
if(ch.equals("0")) {
System.out.println(bug);
}
} else if (ch.equals("M")) {
bug.move();
} else if (ch.equals("T")) {
bug. turn();
Transcribed Image Text:exit"); Scanner sc = new Scanner(System.in); new Bug(); ch = Bug bug String ch while (!ch.equals("E")) {//loops until user inputs 0, M, T, or E } } } = System.out.println("(0) System.out.print("Enter your command: "); sc.next().toUpperCase(); //changes a lower case input to upper case 3 System.out.println(); for output\n(M) for move\n(T) for turn\n(E) for if(ch.equals("0")) { System.out.println(bug); } } else if (ch.equals("M")) { bug.move(); } else if (ch.equals("T")) { bug. turn();
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