Answered: In Java Assume all necessary imports…

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

Assume all necessary imports have been made, an appropriate plotSegment method
has been defined, and x and y have been declared with the statement, int x, y;.
a) What's still wrong with the following code fragment?
while (!xStr.equalsIgnoreCase("q"))
{
yStr = stdIn.next();
try
{
x = Integer.parseInt(xStr);
y = Integer.parseInt(yStr);
}
catch (NumberFormatException nfe)
{
System.out.println("Invalid entry: " + xStr + " " +
yStr
+ "\nMust enter integer space integer.");
}
line.plotSegment(x, y);
System.out.print("Enter x & y coordinates (q to quit):
");
xStr = stdIn.next();
} // end while
b) What should be done to deal with the problem?

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