Prentice.Hall.Introduction.to.Java.Programming,.Brief.Version.9th.(2014).[sharethefiles.com]

28 Chapter 1 Introduction to Computers, Programs, and Java
You will get Fahrenheit 67 degrees, which is wrong. It should be 95.0. In Java, the division
for integers is an integer—the fractional part is truncated—so in Java 9 / 5 is 1. To get
the correct result, you need to use 9.0 / 5, which results in 1.8.
In general, syntax errors are easy to find and easy to correct, because the compiler gives indications
as to where the errors came from and why they are wrong. Runtime errors are not difficult
to find, either, since the reasons and locations for the errors are displayed on the console
when the program aborts. Finding logic errors, on the other hand, can be very challenging. In the
upcoming chapters, you will learn the techniques of tracing programs and finding logic errors.
✓Point✓ Check
1.45 What are syntax errors (compile errors), runtime errors, and logic errors?
1.46 Give examples of syntax errors, runtime errors, and logic errors.
1.47 If you forget to put a closing quotation mark on a string, what kind error will be raised?
1.48 If your program needs to read integers, but the user entered strings, an error would
occur when running this program. What kind of error is this?
1.49 Suppose you write a program for computing the perimeter of a rectangle and you
mistakenly write your program so that it computes the area of a rectangle. What kind
of error is this?
1.50 Identify and fix the errors in the following code:
1 public class Welcome {
2 public void Main(String[] args) {
3 System.out.println('Welcome to Java!);
4 }
5 }
1.51 The following program is wrong. Reorder the lines so that the program displays
morning followed by afternoon.
1 public static void main(String[] args) {
2 }
3 public class Welcome {
4 System.out.println("afternoon");
5 System.out.println("morning");
6 }
KEY TERMS
Application Program Interface (API) 16
assembler 10
assembly language 10
bit 4
block 17
block comment 17
bus 2
byte 4
bytecode 21
bytecode verifier 22
cable modem 8
central processing unit (CPU) 3
class loader 22
comment 17
compiler 10
console 16
dot pitch 8
DSL (digital subscriber line) 8
encoding scheme 4
hardware 2
high-level language 10
integrated development environment
(IDE) 16
interpreter 10
java command 21
Java Development Toolkit (JDK) 16
Java language specification 16
Java Virtual Machine (JVM) 21
javac command 21
keyword (or reserved word) 17
library 16
line comment 17