Question 1

In the __________ file format, when data in a spreadsheet is exported, each row is written to a line and commas are used to separate the values in the cells.

Accepted Answer

A)   comma separated value
B)   extensible markup language
C)   excel binary
D)   data interchangeE) A) and B)
F) B) and C)

Question 2

Most of the String comparison methods are case sensitive.

Accepted Answer

A) True 
 B)False

Question 3

The __________ method returns a copy of the calling String object with all leading and trailing whitespace characters deleted.

Accepted Answer

A)   remove
B)   trim
C)   compress
D)   concatE) C) and D)
F) A) and B)

Question 4

Which of the following statements converts a String object variable named str to an int and stores the value in the variable x?

Accepted Answer

A)   int x = Integer.integer(str) ;
B)   int x - str;
C)   int x = Integer.parseInteger(str) ;
D)   int x = Integer.parseInt(str) ;E) A) and B)
F) All of the above

Question 5

What will be displayed after the following code is executed? 
boolean matches;
String str1 = "The cow jumped over the moon.";
String str2 = "moon";
Matches = str1.endsWith(str1) ;
System.out.println(matches) ;

Accepted Answer

A)   true
B)   moon
C)   false
D)   The cowE) A) and C)
F) B) and C)

Question 6

A wrapper class is a class that is "wrapped around" a primitive data type and allows you to create objects instead of variables.

Accepted Answer

A) True 
 B)False

Question 7

What will be displayed after the following code is executed? 
String str = "RSTUVWXYZ";
System.out.println(str.charAt(5) ) ;

Accepted Answer

A)   W
B)   X
C)   V
D)   UE) A) and C)
F) A) and B)

Question 8

What will be the value of position after the following code is executed? int position;
String str = "The cow jumped over the moon.";
Position = str.indexOf("ov") ;

Accepted Answer

A)   14
B)   15
C)   18
D)   17E) A) and B)
F) A) and C)

Question 9

What will be the value of position after the following code is executed? int position;
String str = "The cow jumped over the moon.";
Position = str.lastIndexOf("ov", 14) ;

Accepted Answer

A)   14
B)   1
C)   0
D)   -1E) None of the above
F) A) and B)

Question 10

You can concatenate String objects by using the

Accepted Answer

A)   concat or trim methods
B)   concat method or the + operator
C)   concatenate or join methods
D)   concatenate method or the + operatorE) A) and D)
F) B) and C)

Question 11

Given the following code, how many times will the while loop be executed? StringTokenizer st = new StringTokenizer("Java programming is fun!") ;
While (st.hasMoreTokens() ) 
System.out.println(st.nextToken() ) ;

Accepted Answer

A)   7
B)   4
C)   5
D)   1E) A) and B)
F) C) and D)

Question 12

Trying to extract more tokens than exist from a StringTokenizer object will cause an error.

Accepted Answer

A) True 
 B)False

Question 13

You may cause an off-by-one error when working with a character position within a string if you think of the first position in the string as 1.

Accepted Answer

A) True 
 B)False

Question 14

The __________ class is the wrapper class for the char data type.

Accepted Answer

A)   StringBuilder
B)   Integer
C)   Character
D)   StringE) B) and C)
F) A) and D)

Question 15

Which of the following statements will display the maximum value that a double can hold?

Accepted Answer

A)   System.out.println(Double.MAX_VALU
E)  ;
B)   System.out.println(Double.MAXIMUM_VALU
E)  ;
C)   System.out.println(Double.MAX_VAL) ;
D)   System.out.println(<double>(MAX_VALU
E)  ) ;E) A) and B)
F) B) and C)

Question 16

What will be displayed after the following statements are executed? 
String str = "red$green&blue#orange";
String[] tokens = str.split("[$&#]") ;
For (String s : tokens) 
System.out.print(s + " ") ;

Accepted Answer

A)   red green blue orange
B)   red $ green & blue # orange
C)   $ & #
D)   red[$&#]green[$&#]blue[$&#]orangeE) B) and C)
F) A) and D)

Question 17

The String class's __________ method accepts a value of any primitive data type as its argument and returns a string representation of the value.

Accepted Answer

A)   trim
B)   getChar
C)   toString
D)   valueOfE) A) and B)
F) All of the above

Question 18

Which of the following statements converts a double variable named tax to a string and stores the value in the String object named str?

Accepted Answer

A)   String str = Double.toString(tax) ;
B)   String str = double(tax) ;
C)   String str = double.toString(tax) ;
D)   String str = tax.Double.toString(str) ;E) B) and C)
F) None of the above

Question 19

The Character wrapper class provides numerous methods for

Accepted Answer

A)   converting objects to primitive data types
B)   testing and converting character data
C)   testing and converting numeric literals
D)   performing operations with named constantsE) A) and B)
F) All of the above

Question 20

The term __________ is commonly used to refer to a string that is part of another string.

Accepted Answer

A)   nested string
B)   literal
C)   substring
D)   delimiterE) None of the above
F) C) and D)

Exam 8: Text Processing and Wrapper Classes

Most of the String comparison methods are case sensitive.

Correct AnswerverifiedShow Answer

What will be the value of position after the following code is executed? int position; String str = "The cow jumped over the moon."; Position = str.indexOf("ov") ;

Correct AnswerverifiedShow Answer

What will be displayed after the following statements are executed? String str = "red$green&blue#orange"; String[] tokens = str.split("[$&#]") ; For (String s : tokens) System.out.print(s + " ") ;

Correct AnswerverifiedShow Answer

A wrapper class is a class that is "wrapped around" a primitive data type and allows you to create objects instead of variables.

Correct AnswerverifiedShow Answer

The __________ class is the wrapper class for the char data type.

Correct AnswerverifiedShow Answer

Which of the following statements will display the maximum value that a double can hold?

Correct AnswerverifiedShow Answer

Trying to extract more tokens than exist from a StringTokenizer object will cause an error.

Correct AnswerverifiedShow Answer

The Character wrapper class provides numerous methods for

Correct AnswerverifiedShow Answer

In the __________ file format, when data in a spreadsheet is exported, each row is written to a line and commas are used to separate the values in the cells.

Correct AnswerverifiedShow Answer

What will be the value of position after the following code is executed? int position; String str = "The cow jumped over the moon."; Position = str.lastIndexOf("ov", 14) ;

Correct AnswerverifiedShow Answer

The String class's __________ method accepts a value of any primitive data type as its argument and returns a string representation of the value.

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Which of the following statements converts a String object variable named str to an int and stores the value in the variable x?

Correct AnswerverifiedShow Answer

You can concatenate String objects by using the

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What will be displayed after the following code is executed? String str = "RSTUVWXYZ"; System.out.println(str.charAt(5) ) ;

Correct AnswerverifiedShow Answer

Which of the following statements converts a double variable named tax to a string and stores the value in the String object named str?

Correct AnswerverifiedShow Answer

The term __________ is commonly used to refer to a string that is part of another string.

Correct AnswerverifiedShow Answer

What will be displayed after the following code is executed? boolean matches; String str1 = "The cow jumped over the moon."; String str2 = "moon"; Matches = str1.endsWith(str1) ; System.out.println(matches) ;

Correct AnswerverifiedShow Answer

Given the following code, how many times will the while loop be executed? StringTokenizer st = new StringTokenizer("Java programming is fun!") ; While (st.hasMoreTokens() ) System.out.println(st.nextToken() ) ;

Correct AnswerverifiedShow Answer

The __________ method returns a copy of the calling String object with all leading and trailing whitespace characters deleted.

Correct AnswerverifiedShow Answer

You may cause an off-by-one error when working with a character position within a string if you think of the first position in the string as 1.

Correct AnswerverifiedShow Answer

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