Question 1

The statement: System.out.printf"%6.2f",597.7231);displays:

Accepted Answer

A) 597.723 
B) 597.72 
C) 000597.72 
D) None of the above 
A) 597.723 
B) 597.72 
C) 000597.72 
D) None of the above B

Question 2

What Java package includes the class Scanner?

Accepted Answer

A) awt 
B) swing 
C) io 
D) util 
A) awt 
B) swing 
C) io 
D) util D

Question 3

What do the format specifiers d,f,e,g,s and c represent?

Accepted Answer

The format specifiers d,f,e,and g are all used for numeric representation.Specifier d represents a decimal integer,specifier f represents a fixed-point floating-point number,specifier e represents E-notation floating-point,and specifier g represents general floating-point in which Java secedes whether to use E-notation.
The format specifiers s and c are used for string and character representation,respectively.

Question 4

The class NumberFormat allows you to specify a constant representing which country's currency format should be used.To use this constant you must import:

Accepted Answer

A) java.util.Locale 
B) java.util.Currency 
C) java.util.Properties 
D) None of the above. 
A) java.util.Locale 
B) java.util.Currency 
C) java.util.Properties 
D) None of the above.

Question 5

If there is no loss of efficiency in importing an entire Java package instead of importing only classes you use into your program,why would you not just import the entire package?

Accepted Answer

Importing only the classes you need into

Question 6

Valid arguments to the System.out object's println method include:

Accepted Answer

A) "Anything with double quotes" 
B) String variables 
C) Variables of type int 
D) All of the above 
A) "Anything with double quotes" 
B) String variables 
C) Variables of type int 
D) All of the above

Question 7

The method printf is used the same way as the method println but has the added feature that allows you to add formatting instructions.

Accepted Answer

A) True 
 B)False

Question 8

Write Java statements to apply currency formatting to the number 100.Indicate the package you need to import.

Accepted Answer

import java.text.NumberFormat;

Question 9

Efficiency is lost in importing the entire package instead of importing the classes you use.

Accepted Answer

A) True 
 B)False

Question 10

What does the following code output? DecimalFormat dfQuestion = new DecimalFormat"#0.##E0");
System.out.printlndfQuestion.format12.7896987));

Accepted Answer

A) 12.79E0 
B) 12.8E0 
C) 1.28E1 
D) .13E2 
A) 12.79E0 
B) 12.8E0 
C) 1.28E1 
D) .13E2

Question 11

What does the following code output? DecimalFormat percent = new DecimalFormat"0.00%");
System.out.printlnpercent.format0.308));

Accepted Answer

A) 3.080% 
B) 30.80% 
C) .0308% 
D) 308.0% 
A) 3.080% 
B) 30.80% 
C) .0308% 
D) 308.0%

Question 12

Every Java program automatically imports the java.util package.

Accepted Answer

A) True 
 B)False

Question 13

Standard code libraries in Java are called:

Accepted Answer

A) Methods 
B) Classes 
C) Packages 
D) Statements 
A) Methods 
B) Classes 
C) Packages 
D) Statements

Question 14

The printf method can be used to output multiple formatted values.

Accepted Answer

A) True 
 B)False

Question 15

Write a Java program to create and display 57.32% using the DecimalFormat class.Include the necessary import statement to use the DecimalFormat class.

Accepted Answer

import java.text.DecimalFormat

Question 16

The Java method printf is based on the ________ language.

Accepted Answer

A) Pascal 
B) C++ 
C) C 
D) ADA 
A) Pascal 
B) C++ 
C) C 
D) ADA

Question 17

If a hyphen is added after the % in a format specifier,the output will be _________.

Accepted Answer

A) Left justified 
B) Right justified 
C) Centered 
D) None of the above 
A) Left justified 
B) Right justified 
C) Centered 
D) None of the above

Question 18

Explain the significance of the pattern string used by the DecimalFormat object,and give an example of a valid pattern.

Accepted Answer

The pattern string represents the format

Question 19

Which statement or group of statements produces the output: Java programming is fun!

Accepted Answer

A) System.out.printJava programming); System.out.printis fun!); 
B) System.out.printlnJava programming is fun!); 
C) System.out.println"Java programming"); System.out.println" is fun!"); 
D) System.out.print"Java programming") System.out.println" is fun!"); 
A) System.out.printJava programming); System.out.printis fun!); 
B) System.out.printlnJava programming is fun!); 
C) System.out.println"Java programming"); System.out.println" is fun!"); 
D) System.out.print"Java programming") System.out.println" is fun!");

Question 20

Write ONE Java statement to display your first and last name on two separate lines.

Accepted Answer

System.out

The statement: System.out.printf"%6.2f",597.7231);displays:

What Java package includes the class Scanner?

What do the format specifiers d,f,e,g,s and c represent?

The class NumberFormat allows you to specify a constant representing which country's currency format should be used.To use this constant you must import:

If there is no loss of efficiency in importing an entire Java package instead of importing only classes you use into your program,why would you not just import the entire package?

Valid arguments to the System.out object's println method include:

The method printf is used the same way as the method println but has the added feature that allows you to add formatting instructions.

Write Java statements to apply currency formatting to the number 100.Indicate the package you need to import.

Efficiency is lost in importing the entire package instead of importing the classes you use.

What does the following code output? DecimalFormat dfQuestion = new DecimalFormat"#0.##E0"); System.out.printlndfQuestion.format12.7896987));

What does the following code output? DecimalFormat percent = new DecimalFormat"0.00%"); System.out.printlnpercent.format0.308));

Every Java program automatically imports the java.util package.

Standard code libraries in Java are called:

The printf method can be used to output multiple formatted values.

Write a Java program to create and display 57.32% using the DecimalFormat class.Include the necessary import statement to use the DecimalFormat class.

The Java method printf is based on the ________ language.

If a hyphen is added after the % in a format specifier,the output will be _________.

Explain the significance of the pattern string used by the DecimalFormat object,and give an example of a valid pattern.

Which statement or group of statements produces the output: Java programming is fun!

Write ONE Java statement to display your first and last name on two separate lines.

Getting Started

Flow of Control

Defining Classes I

Defining Classes II

Arrays

Inheritance

Polymorphism and Abstract Classes

Exception Handling

File IO

Recursion

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections,maps,and Iterators

Swing I

Swing II

Java Never Ends

Applets

Filters

Exam 2: Console Input and Output

The statement: System.out.printf"%6.2f",597.7231);displays:

What Java package includes the class Scanner?

What do the format specifiers d,f,e,g,s and c represent?

The class NumberFormat allows you to specify a constant representing which country's currency format should be used.To use this constant you must import:

If there is no loss of efficiency in importing an entire Java package instead of importing only classes you use into your program,why would you not just import the entire package?

Valid arguments to the System.out object's println method include:

The method printf is used the same way as the method println but has the added feature that allows you to add formatting instructions.

Write Java statements to apply currency formatting to the number 100.Indicate the package you need to import.

Efficiency is lost in importing the entire package instead of importing the classes you use.

What does the following code output? DecimalFormat dfQuestion = new DecimalFormat"#0.##E0"); System.out.printlndfQuestion.format12.7896987));

What does the following code output? DecimalFormat percent = new DecimalFormat"0.00%"); System.out.printlnpercent.format0.308));

Every Java program automatically imports the java.util package.

Standard code libraries in Java are called:

The printf method can be used to output multiple formatted values.

Write a Java program to create and display 57.32% using the DecimalFormat class.Include the necessary import statement to use the DecimalFormat class.

The Java method printf is based on the ________ language.

If a hyphen is added after the % in a format specifier,the output will be _________.

Explain the significance of the pattern string used by the DecimalFormat object,and give an example of a valid pattern.

Which statement or group of statements produces the output: Java programming is fun!

Write ONE Java statement to display your first and last name on two separate lines.

Getting Started

Flow of Control

Defining Classes I

Defining Classes II

Arrays

Inheritance

Polymorphism and Abstract Classes

Exception Handling

File IO

Recursion

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections,maps,and Iterators

Swing I

Swing II

Java Never Ends

Applets

Filters