Question 1

What is the output of the code fragment given below?
Int i = 0;
Int j = 0;
While (i < 125)
{
I = i + 2;
J++;
}
System.out.println(j);

Accepted Answer

A)  0 
B)  62 
C)  63 
D)  The code fragment displays no output because it does not compile. 
A)  0 
B)  62 
C)  63 
D)  The code fragment displays no output because it does not compile.

Question 2

What is the output of the code below? for (int val = 0; val < 4; val ++)
{
System.out.print ("+");
For (int num = 0; num < val; num++)
{
System.out.print ("0");
}
}

Accepted Answer

A) +0+00+000+0000 
B) +000+000+000+000 
C) ++0+00+000 
D) ++++000000 
A) +0+00+000+0000 
B) +000+000+000+000 
C) ++0+00+000 
D) ++++000000

Question 3

Which loop does not check a condition at the beginning of the loop?
I. The do loop
II. The while loop
III. The for loop

Accepted Answer

A)  I and II 
B)  I and III 
C)  I only 
D)  III only 
A)  I and II 
B)  I and III 
C)  I only 
D)  III only

Question 4

How many times does the following code snippet display "Loop Execution"? for (int i = 0; i < 10; i++);
{
System.out.println("Loop Execution");
}

Accepted Answer

A)  Ten times. 
B)  The code snippet does not run because of a compile error. 
C)  Infinite loop. 
D)  Only one time. 
A)  Ten times. 
B)  The code snippet does not run because of a compile error. 
C)  Infinite loop. 
D)  Only one time.

Question 5

What does the following code do?
Int sum = 0;
Final double count = 1000;
Random generator = new Random();
For (int i = 1; i <= count; i++)
{
Sum = sum + generator.nextInt(101);
}
System.out.println(sum / count);

Accepted Answer

A)  It simulates the outcome of throwing a coin. 
B)  It calculates the average of 1000 random numbers between 0 and 100. 
C)  It performs Monte Carlo simulation of fluid dynamics. 
D)  It calculates the average of 1000 random numbers between 1 and 101. 
A)  It simulates the outcome of throwing a coin. 
B)  It calculates the average of 1000 random numbers between 0 and 100. 
C)  It performs Monte Carlo simulation of fluid dynamics. 
D)  It calculates the average of 1000 random numbers between 1 and 101.

Question 6

Which of the loop(s) test the condition after the loop body executes?
I. for loop
II. while loop
III. do loop

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  II and III 
A)  I only 
B)  II only 
C)  III only 
D)  II and III

Question 7

Which of the following loops executes exactly 10 times?

Accepted Answer

A)  for (int i = 0; i <= 10; i++) { } 
B)  int i = 0;
Boolean found = false;
Do
{
I++;
If (i % 10 == 0)
{
Found = true;
}
}
While (i < 10 && !found); 
C)  int i = 0;
While (i <= 10)
{
I++;
} 
D)  for (int i = 1; i <= 10; i++) 
A)  for (int i = 0; i <= 10; i++) { } 
B)  int i = 0;
Boolean found = false;
Do
{
I++;
If (i % 10 == 0)
{
Found = true;
}
}
While (i < 10 && !found); 
C)  int i = 0;
While (i <= 10)
{
I++;
} 
D)  for (int i = 1; i <= 10; i++)

Question 8

Assume the following variable has been declared and given a value as shown: Random rand = new Random();
Int number = rand.nextInt (27) * 2 + 3;
What are the smallest and largest values number may be assigned?

Accepted Answer

A) 3, 57 
B) 0, 27 
C) 3, 55 
D) 0, 26 
A) 3, 57 
B) 0, 27 
C) 3, 55 
D) 0, 26

What is the output of the code fragment given below? Int i = 0; Int j = 0; While (i < 125) { I = i + 2; J++; } System.out.println(j);

What is the output of the code below? for (int val = 0; val < 4; val ++) { System.out.print ("+"); For (int num = 0; num < val; num++) { System.out.print ("0"); } }

Which loop does not check a condition at the beginning of the loop? I. The do loop II. The while loop III. The for loop

How many times does the following code snippet display "Loop Execution"? for (int i = 0; i < 10; i++); { System.out.println("Loop Execution"); }

What does the following code do? Int sum = 0; Final double count = 1000; Random generator = new Random(); For (int i = 1; i <= count; i++) { Sum = sum + generator.nextInt(101); } System.out.println(sum / count);

Which of the loop(s) test the condition after the loop body executes? I. for loop II. while loop III. do loop

Which of the following loops executes exactly 10 times?

Assume the following variable has been declared and given a value as shown: Random rand = new Random(); Int number = rand.nextInt (27) * 2 + 3; What are the smallest and largest values number may be assigned?

Introduction

Using Objects

Implementing Classes

Fundamental Data Types

Decisions

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Inputoutput and Exception Handling

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Graphical User Interfaces

Streams and Binary Inputoutput

Multithreading

Internet Networking

Relational Databases

XML

Web Applications

Filters

Exam 6: Loops

What is the output of the code fragment given below? Int i = 0; Int j = 0; While (i < 125) { I = i + 2; J++; } System.out.println(j);

What is the output of the code below? for (int val = 0; val < 4; val ++) { System.out.print ("+"); For (int num = 0; num < val; num++) { System.out.print ("0"); } }

Which loop does not check a condition at the beginning of the loop? I. The do loop II. The while loop III. The for loop

How many times does the following code snippet display "Loop Execution"? for (int i = 0; i < 10; i++); { System.out.println("Loop Execution"); }

What does the following code do? Int sum = 0; Final double count = 1000; Random generator = new Random(); For (int i = 1; i <= count; i++) { Sum = sum + generator.nextInt(101); } System.out.println(sum / count);

Which of the loop(s) test the condition after the loop body executes? I. for loop II. while loop III. do loop

Which of the following loops executes exactly 10 times?

Assume the following variable has been declared and given a value as shown: Random rand = new Random(); Int number = rand.nextInt (27) * 2 + 3; What are the smallest and largest values number may be assigned?

Introduction

Using Objects

Implementing Classes

Fundamental Data Types

Decisions

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Inputoutput and Exception Handling

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Graphical User Interfaces

Streams and Binary Inputoutput

Multithreading

Internet Networking

Relational Databases

XML

Web Applications

Filters