Question 1

Assuming that pay has been declared a double,the following statement is valid.
pay = 2,583.44;

Accepted Answer

A) True 
 B)False

Question 2

What will be the value of z after the following statements have been executed? int x = 4,y = 33;
Double z;
Z = (double)(y / x);

Accepted Answer

A)  8.25 
B)  4 
C)  8 
D)  8.0 
A)  8.25 
B)  4 
C)  8 
D)  8.0

Question 3

What will be displayed as a result of executing the following code? public class test
{
Public static void main(String[] args)
{
Int value1 = 9;
System.out.println(value1);
Int value2 = 45;
System.out.println(value2);
System.out.println(value3);
Value = 16;
}
}

Accepted Answer

A)  9
45
16 
B)  94516 
C)  9 45 16 
D)  Nothing,this is an error 
A)  9
45
16 
B)  94516 
C)  9 45 16 
D)  Nothing,this is an error

Question 4

In the following Java statement what value is stored in the variable name? String name = "John Doe";

Accepted Answer

A)  John Doe 
B)  The memory address where "John Doe" is located 
C)  name 
D)  The memory address where name is located 
A)  John Doe 
B)  The memory address where "John Doe" is located 
C)  name 
D)  The memory address where name is located

Question 5

Which of the following is not a rule that must be followed when naming identifiers?

Accepted Answer

A)  The first character must be one of the letters a-z,A-Z,and underscore or a dollar sign. 
B)  Identifiers can contain spaces. 
C)  Uppercase and lowercase characters are distinct. 
D)  After the first character,you may use the letters a-z,A-Z,the underscore,a dollar sign,or digits 0-9. 
A)  The first character must be one of the letters a-z,A-Z,and underscore or a dollar sign. 
B)  Identifiers can contain spaces. 
C)  Uppercase and lowercase characters are distinct. 
D)  After the first character,you may use the letters a-z,A-Z,the underscore,a dollar sign,or digits 0-9.

Question 6

Which of the following is not a valid comment statement?

Accepted Answer

A)  // comment 1 
B)  /* comment 2 */ 
C)  */ comment 3 /* 
D)  /** comment 4 */ 
A)  // comment 1 
B)  /* comment 2 */ 
C)  */ comment 3 /* 
D)  /** comment 4 */

Question 7

If the compiler encounters a statement that uses a variable before the variable is declared,an error will result.

Accepted Answer

A) True 
 B)False

Question 8

Every Java application program must have

Accepted Answer

A)  a class named MAIN 
B)  a method named main 
C)  comments 
D)  integer variables 
A)  a class named MAIN 
B)  a method named main 
C)  comments 
D)  integer variables

Question 9

Character literals are enclosed in _____;string literals are enclosed in _____.

Accepted Answer

A)  single quotes;single quotes 
B)  double quotes;double quotes 
C)  single quotes;double quotes 
D)  double quotes;single quotes 
A)  single quotes;single quotes 
B)  double quotes;double quotes 
C)  single quotes;double quotes 
D)  double quotes;single quotes

Question 10

What is the result of the following expression? 17 % 3 * 2 - 12 + 15

Accepted Answer

A)  7 
B)  8 
C)  12 
D)  105 
A)  7 
B)  8 
C)  12 
D)  105

Question 11

A Java program must have at least one of these:

Accepted Answer

A)  Class definition 
B)  Variable 
C)  Comment 
D)  System.out.println();statement 
A)  Class definition 
B)  Variable 
C)  Comment 
D)  System.out.println();statement

Question 12

What would be displayed as a result of the following code? int x = 578;
System.out.print("There are " +
X + 5 + " \ n" +
"hens in the hen house.");

Accepted Answer

A)  There are 583 hens in the hen house. 
B)  There are 5785 hens in the hen house. 
C)  There are x5 \ nhens in the hen house. 
D)  There are 5785
Hens in the hen house. 
A)  There are 583 hens in the hen house. 
B)  There are 5785 hens in the hen house. 
C)  There are x5 \ nhens in the hen house. 
D)  There are 5785
Hens in the hen house.

Question 13

What will be displayed as a result of executing the following code? int x = 8;
String msg = "I am enjoying java.";
String msg1 = msg.toUpperCase();
String msg2 = msg.toLowerCase();
Char ltr = msg.charAt(x);
Int strSize = msg.length();
System.out.println(msg);
System.out.println(msg1);
System.out.println(msg2);
System.out.println("Character at index x = " +
Ltr);
System.out.println("msg has " + strSize +
" characters.");

Accepted Answer

A)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = j
Msg has 20 characters. 
B)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = o
Msg has 20 characters. 
C)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = o
Msg has 19 characters. 
D)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = y
Msg has 19 characters. 
A)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = j
Msg has 20 characters. 
B)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = o
Msg has 20 characters. 
C)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = o
Msg has 19 characters. 
D)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = y
Msg has 19 characters.

Question 14

If the following Java statements are executed,what will be displayed? System.out.println("The top three winners are \ n");
System.out.print("Jody,the Giant \ n");
System.out.print("Buffy,the Barbarian");
System.out.println("Adelle,the Alligator");

Accepted Answer

A)  The top three winners are
Jody,the Giant
Buffy,the Barbarian
Adelle,the Alligator 
B)  The top three winners are
Jody,the Giant \ nBuffy,the BarbarianAdelle,the Alligator 
C)  The top three winners are Jody,the Giant \ nBuffy,the BarbarianAdelle,and the Albino 
D)  The top three winners are
Jody,the Giant
Buffy,the BarbarianAdelle,the Alligator 
A)  The top three winners are
Jody,the Giant
Buffy,the Barbarian
Adelle,the Alligator 
B)  The top three winners are
Jody,the Giant \ nBuffy,the BarbarianAdelle,the Alligator 
C)  The top three winners are Jody,the Giant \ nBuffy,the BarbarianAdelle,and the Albino 
D)  The top three winners are
Jody,the Giant
Buffy,the BarbarianAdelle,the Alligator

Question 15

If x has been declared an int,which of the following statements is invalid?

Accepted Answer

A)  x = 0; 
B)  x = -58932; 
C)  x = 1,000; 
D)  x = 592; 
A)  x = 0; 
B)  x = -58932; 
C)  x = 1,000; 
D)  x = 592;

Question 16

When saving a Java source file,save it with an extension of

Accepted Answer

A)  .javac 
B)  .class 
C)  .src 
D)  .java 
A)  .javac 
B)  .class 
C)  .src 
D)  .java

Question 17

What will be the value of z as a result of executing the following code? int x = 5,y = 28;
Float z;
Z = (float)(y / x);

Accepted Answer

A)  5.60 
B)  5.6 
C)  3.0 
D)  5.0 
A)  5.60 
B)  5.6 
C)  3.0 
D)  5.0

Question 18

To print "Hello,world" on the monitor,use the following Java statement

Accepted Answer

A)  SystemOutPrintln("Hello,world"); 
B)  System.out.println{"Hello,world"} 
C)  System.out.println("Hello,world"); 
D)  Print "Hello,world"; 
A)  SystemOutPrintln("Hello,world"); 
B)  System.out.println{"Hello,world"} 
C)  System.out.println("Hello,world"); 
D)  Print "Hello,world";

Question 19

Both character literals and string literals can be assigned to a char variable.

Accepted Answer

A) True 
 B)False

Question 20

What is the result of the following expression? 25 / 4 + 4 * 10 % 3

Accepted Answer

A)  19 
B)  5.25 
C)  3 
D)  7 
A)  19 
B)  5.25 
C)  3 
D)  7

Exam 2: Java Fundamentals

Assuming that pay has been declared a double,the following statement is valid. pay = 2,583.44;

What will be the value of z after the following statements have been executed? int x = 4,y = 33; Double z; Z = (double)(y / x);

What will be displayed as a result of executing the following code? public class test { Public static void main(String[] args) { Int value1 = 9; System.out.println(value1); Int value2 = 45; System.out.println(value2); System.out.println(value3); Value = 16; } }

In the following Java statement what value is stored in the variable name? String name = "John Doe";

Which of the following is not a rule that must be followed when naming identifiers?

Which of the following is not a valid comment statement?

If the compiler encounters a statement that uses a variable before the variable is declared,an error will result.

Every Java application program must have

Character literals are enclosed in _____;string literals are enclosed in _____.

What is the result of the following expression? 17 % 3 * 2 - 12 + 15

A Java program must have at least one of these:

What would be displayed as a result of the following code? int x = 578; System.out.print("There are " + X + 5 + " \ n" + "hens in the hen house.");

If the following Java statements are executed,what will be displayed? System.out.println("The top three winners are \ n"); System.out.print("Jody,the Giant \ n"); System.out.print("Buffy,the Barbarian"); System.out.println("Adelle,the Alligator");

If x has been declared an int,which of the following statements is invalid?

When saving a Java source file,save it with an extension of

What will be the value of z as a result of executing the following code? int x = 5,y = 28; Float z; Z = (float)(y / x);

To print "Hello,world" on the monitor,use the following Java statement

Both character literals and string literals can be assigned to a char variable.

What is the result of the following expression? 25 / 4 + 4 * 10 % 3

Introduction to Computers and Java

Decision Structures

Loops and Files

Methods

A First Look at Classes

A First Look at Gui Applications

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Advanced Gui Applications

Applets and More

Recursion

Sorting, Searching, and Algorithm Analysis

Generics

Collections

Array-Based Lists

Linked Lists

Stacks and Queues

Binary Trees, Avl Trees, and Priority Queues

Filters

Character literals are enclosed in _;string literals are enclosed in _.