Question 1

The word println is a(n)

Accepted Answer

A)  method 
B)  reserved word 
C)  variable 
D)  class 
E)  String 
A)  method 
B)  reserved word 
C)  variable 
D)  class 
E)  String

Question 2

What is output with the statement System.out.println(x+y); if x and y are int values where x=10 and y=5?

Accepted Answer

A)  15 
B)  105 
C)  10 5 
D)  x+y 
E)  An error since neither x nor y is a String 
A)  15 
B)  105 
C)  10 5 
D)  x+y 
E)  An error since neither x nor y is a String

Question 3

For the following questions, refer to the class defined below:
 import java.util.Scanner;
 public class Questions33_34
 {
 public static void main(String[ ] args)
 {
 int x, y, z;
 double average;
 Scanner scan = new Scanner(System.in);
 System.out.println("Enter an integer value");
 x = scan.nextInt( );
 System.out.println("Enter another integer value");
 y = scan.nextInt( );
 System.out.println("Enter a third integer value");
 z = scan.nextInt( );
 average = (x + y + z) / 3;
 System.out.println("The result of my calculation is " + average);
 }
 }
-What is output if x = 0, y = 1 and z = 1?

Accepted Answer

A)  0 
B)  0.0 
C)  0.6666666666666666 
D)  0.6666666666666667 
E)  0.67 
A)  0 
B)  0.0 
C)  0.6666666666666666 
D)  0.6666666666666667 
E)  0.67

Question 4

Consider the following paint method and answer the questions below:
public void paint(Graphics page)
{
page.setColor(Color.blue);
page.fillRect(50, 50, 100, 100);
page.setColor(Color.white);
page.drawLine(50, 50, 150, 150);
page.drawLine(50, 150, 150, 50);
page.setColor(Color.black);
page.drawString("A nice box", 50, 170);
}
-The figure drawn in this applet is

Accepted Answer

A)  a blue square 
B)  a blue square with two white lines drawn horizontally through it 
C)  a blue square with two white lines drawn diagonally through it 
D)  a blue square with two white lines drawn vertically through it 
E)  a white square with two blue lines drawn vertically through it 
A)  a blue square 
B)  a blue square with two white lines drawn horizontally through it 
C)  a blue square with two white lines drawn diagonally through it 
D)  a blue square with two white lines drawn vertically through it 
E)  a white square with two blue lines drawn vertically through it

Question 5

What value will z have if we execute the following assignment statement?
Float z = 5 / 10;

Accepted Answer

A)  z will equal 0.0 
B)  z will equal 0.5 
C)  z will equal 5.0 
D)  z will equal 0.05 
E)  none of the above, a run-time error arises because z is a float and 5 / 10 is an int 
A)  z will equal 0.0 
B)  z will equal 0.5 
C)  z will equal 5.0 
D)  z will equal 0.05 
E)  none of the above, a run-time error arises because z is a float and 5 / 10 is an int

Question 6

Provide three examples of code using assignment statements where one assignment statement would result in a syntax error, one would result in a logical error, and one would result in a run-time error.

Accepted Answer

int x = 5.0 / 2.0; // syntax error cause

Question 7

Suppose that String name = "Frank Zappa". What will the instruction name.toUpperCase( ).replace('A', 'I'); return?

Accepted Answer

A)  "FRANK ZAPPA " 
B)  "FRINK ZIPPI" 
C)  "Frink Zippi" 
D)  "Frank Zappa" 
E)  "FrInk ZIppI" 
A)  "FRANK ZAPPA " 
B)  "FRINK ZIPPI" 
C)  "Frink Zippi" 
D)  "Frank Zappa" 
E)  "FrInk ZIppI"

Question 8

In Java, 'a' and 'A' are considered to be different values.

Accepted Answer

A) True 
 B)False

Question 9

Java is a strongly typed language. What is meant by "strongly typed"?

Accepted Answer

A)  Every variable must have an associated type before you can use it 
B)  Variables can be used without declaring their type 
C)  Every variable has a single type associated with it throughout its existence in the program, and the variable can only store values of that type 
D)  Variables are allowed to change type during their existence in the program as long as the value it currently stores is of the type it is currently declared to be 
E)  Variables are allowed to change types during their existence in the program but only if the change is to a narrower type 
A)  Every variable must have an associated type before you can use it 
B)  Variables can be used without declaring their type 
C)  Every variable has a single type associated with it throughout its existence in the program, and the variable can only store values of that type 
D)  Variables are allowed to change type during their existence in the program as long as the value it currently stores is of the type it is currently declared to be 
E)  Variables are allowed to change types during their existence in the program but only if the change is to a narrower type

Question 10

Write a program that will input some number of cents (less than 100) and output the number of quarters, dimes, nickels and pennies needed to add up to that amount.

Accepted Answer

import java.util.Scanner;
public class C

Question 11

A variable of type boolean will store either a 0 or a 1.

Accepted Answer

A) True 
 B)False

Question 12

An applet is 200x200. Write the Strings "North", "South", "East", and "West" at the four edges of the applet where they should appear as if on a map. Use the color black for the text.

Accepted Answer

public void paint(Graphics pag

Question 13

What is output with the statement System.out.println(""+x+y); if x and y are int values where x=10 and y=5?

Accepted Answer

A)  15 
B)  105 
C)  10 5 
D)  x+y 
E)  An error since neither x nor y is a String 
A)  15 
B)  105 
C)  10 5 
D)  x+y 
E)  An error since neither x nor y is a String

Question 14

The values of (double) 5 / 2 and (double) (5 / 2) are identical.

Accepted Answer

A) True 
 B)False

Question 15

Assume that x is a double that stores 0.362491. To output this value as 36%, you could use the NumberFormat class with NumberFormat nf = NumberFormat.getPercentInstance( ); Which of the following statements then would output x as 36%?

Accepted Answer

A)  System.out.println(x); 
B)  System.out.println(nf); 
C)  System.out.println(nf.x); 
D)  System.out.println(nf.format(x)); 
E)  System.out.println(format(x)); 
A)  System.out.println(x); 
B)  System.out.println(nf); 
C)  System.out.println(nf.x); 
D)  System.out.println(nf.format(x)); 
E)  System.out.println(format(x));

Question 16

You cannot cast a String to be a char and you cannot cast a String which stores a number to be an int, float or double.

Accepted Answer

A) True 
 B)False

Question 17

How many ways are there to test to see if two String variables, a and b, are equal to each other if we ignore their case (for instance, "aBCd" would be considered equal to "ABcd").

Accepted Answer

There are at least 10 ways that this can

Question 18

A Java variable is the name of a

Accepted Answer

A)  numeric data value stored in memory 
B)  data value stored in memory that can not change during the program's execution 
C)  data value stored in memory that can change its value but cannot change its type during the program's execution 
D)  data value stored in memory that can change both its value and its type during the program's execution 
E)  data value or a class stored in memory that can change both its value and its type during the program's execution 
A)  numeric data value stored in memory 
B)  data value stored in memory that can not change during the program's execution 
C)  data value stored in memory that can change its value but cannot change its type during the program's execution 
D)  data value stored in memory that can change both its value and its type during the program's execution 
E)  data value or a class stored in memory that can change both its value and its type during the program's execution

Question 19

If x is a string, then x = new String("OH"); and x = "OH"; will accomplish the same thing.

Accepted Answer

A) True 
 B)False

Question 20

Assume that a = "1", b = "2", y = 3 and z = 4. How do the following two statements differ?
System.out.println(a + b + y + z);
System.out.println(y + z + a + b);

Accepted Answer

In the first statement, since a and b ar

The word println is a(n)

What is output with the statement System.out.println(x+y); if x and y are int values where x=10 and y=5?

What value will z have if we execute the following assignment statement? Float z = 5 / 10;

Provide three examples of code using assignment statements where one assignment statement would result in a syntax error, one would result in a logical error, and one would result in a run-time error.

Suppose that String name = "Frank Zappa". What will the instruction name.toUpperCase( ).replace('A', 'I'); return?

In Java, 'a' and 'A' are considered to be different values.

Java is a strongly typed language. What is meant by "strongly typed"?

Write a program that will input some number of cents (less than 100) and output the number of quarters, dimes, nickels and pennies needed to add up to that amount.

A variable of type boolean will store either a 0 or a 1.

An applet is 200x200. Write the Strings "North", "South", "East", and "West" at the four edges of the applet where they should appear as if on a map. Use the color black for the text.

What is output with the statement System.out.println(""+x+y); if x and y are int values where x=10 and y=5?

The values of (double) 5 / 2 and (double) (5 / 2) are identical.

Assume that x is a double that stores 0.362491. To output this value as 36%, you could use the NumberFormat class with NumberFormat nf = NumberFormat.getPercentInstance( ); Which of the following statements then would output x as 36%?

You cannot cast a String to be a char and you cannot cast a String which stores a number to be an int, float or double.

How many ways are there to test to see if two String variables, a and b, are equal to each other if we ignore their case (for instance, "aBCd" would be considered equal to "ABcd").

A Java variable is the name of a

If x is a string, then x = new String("OH"); and x = "OH"; will accomplish the same thing.

Assume that a = "1", b = "2", y = 3 and z = 4. How do the following two statements differ? System.out.println(a + b + y + z); System.out.println(y + z + a + b);

Introduction

Using Classes and Objects

Writing Classes

Conditionals and Loops

More Conditionals and Loops

Object-Oriented Design

Arrays

Inheritance

Polymorphism

Exceptions

Recursion

Collections

Filters

Exam 2: Data and Expressions

The word println is a(n)

What is output with the statement System.out.println(x+y); if x and y are int values where x=10 and y=5?

What value will z have if we execute the following assignment statement? Float z = 5 / 10;

Provide three examples of code using assignment statements where one assignment statement would result in a syntax error, one would result in a logical error, and one would result in a run-time error.

Suppose that String name = "Frank Zappa". What will the instruction name.toUpperCase( ).replace('A', 'I'); return?

In Java, 'a' and 'A' are considered to be different values.

Java is a strongly typed language. What is meant by "strongly typed"?

Write a program that will input some number of cents (less than 100) and output the number of quarters, dimes, nickels and pennies needed to add up to that amount.

A variable of type boolean will store either a 0 or a 1.

An applet is 200x200. Write the Strings "North", "South", "East", and "West" at the four edges of the applet where they should appear as if on a map. Use the color black for the text.

What is output with the statement System.out.println(""+x+y); if x and y are int values where x=10 and y=5?

The values of (double) 5 / 2 and (double) (5 / 2) are identical.

Assume that x is a double that stores 0.362491. To output this value as 36%, you could use the NumberFormat class with NumberFormat nf = NumberFormat.getPercentInstance( ); Which of the following statements then would output x as 36%?

You cannot cast a String to be a char and you cannot cast a String which stores a number to be an int, float or double.

How many ways are there to test to see if two String variables, a and b, are equal to each other if we ignore their case (for instance, "aBCd" would be considered equal to "ABcd").

A Java variable is the name of a

If x is a string, then x = new String("OH"); and x = "OH"; will accomplish the same thing.

Assume that a = "1", b = "2", y = 3 and z = 4. How do the following two statements differ? System.out.println(a + b + y + z); System.out.println(y + z + a + b);

Introduction

Using Classes and Objects

Writing Classes

Conditionals and Loops

More Conditionals and Loops

Object-Oriented Design

Arrays

Inheritance

Polymorphism

Exceptions

Recursion

Collections

Filters