Question 1

If more than one character is used as a delimiter, we must write a loop to determine the tokens, one for each delimiter character.

Accepted Answer

A) True 
 B)False

Question 2

To convert the string, str = "285" to an int, use the following statement:

Accepted Answer

A)  int x = str; 
B)  int x = Integer.parseInteger(str); 
C)  int x = Integer.integer(str); 
D)  int x = Integer.parseInt(str); 
A)  int x = str; 
B)  int x = Integer.parseInteger(str); 
C)  int x = Integer.integer(str); 
D)  int x = Integer.parseInt(str);

Question 3

Which of the following statements will print the maximum value a double variable may have?

Accepted Answer

A)  System.out.println(MAX_VALU
E) ; 
B)  System.out.println(double.MAX_VALU
E) ; 
C)  System.out.println(Double.MAX_VALU
E) ; 
D)  System.out.println(Double.MAXIMUM_VALU
E) ; 
A)  System.out.println(MAX_VALU
E) ; 
B)  System.out.println(double.MAX_VALU
E) ; 
C)  System.out.println(Double.MAX_VALU
E) ; 
D)  System.out.println(Double.MAXIMUM_VALU
E) ;

Question 4

What will be the tokens given the following statements?
String str = ("January 1, 2016");
String[] tokens = str.split(" ");

Accepted Answer

A)  The tokens will be: January
1,
2016 
B)  The tokens will be: ,
Space 
C)  The tokens will be: January
1
2016
Space 
D)  The tokens will be: January
Space
1
,
Space
2016 
A)  The tokens will be: January
1,
2016 
B)  The tokens will be: ,
Space 
C)  The tokens will be: January
1
2016
Space 
D)  The tokens will be: January
Space
1
,
Space
2016

Question 5

What will be printed after the following code is executed?
String str = "abc456";
Int m = 0;
While ( m < 6 )
{
If (Character.isLetter(str.charAt(m)))
System.out.print(
Character.toUpperCase(str.charAt(m)));
M++;
}

Accepted Answer

A)  abc456 
B)  ABC456 
C)  ABC 
D)  456 
A)  abc456 
B)  ABC456 
C)  ABC 
D)  456

Question 6

For the following code, how many times would the for loop execute?
String str = "1,2,3,4,5,6,7,8,9");
String[] tokens = str.split(",");
For (String s : tokens)
System.out.println(s);

Accepted Answer

A)  1 
B)  5 
C)  7 
D)  9 
A)  1 
B)  5 
C)  7 
D)  9

Question 7

If you are using characters other than whitespaces as delimiters, you will probably want to trim the string before tokenizing; otherwise, the leading and/or following whitespaces will become part of the first and/or last token.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following methods of the String class can be used to tokenize a string?

Accepted Answer

A)  split 
B)  tokenize 
C)  trim 
D)  length 
A)  split 
B)  tokenize 
C)  trim 
D)  length

Question 9

If a non-letter argument is passed to the toLowerCase or toUpperCase method, the boolean value False is returned.

Accepted Answer

A) True 
 B)False

Question 10

You can change the contents of a StringBuilder object, but you cannot change the contents of a String object.

Accepted Answer

A) True 
 B)False

Question 11

The Character wrapper class provides numerous methods for:

Accepted Answer

A)  testing String objects 
B)  testing and converting char variables 
C)  converting String variables 
D)  adding two char variables 
A)  testing String objects 
B)  testing and converting char variables 
C)  converting String variables 
D)  adding two char variables

Question 12

To convert the int variable, number to a string, use the following statement:

Accepted Answer

A)  String str = Integer.toString(number); 
B)  String str = integer.toString(number); 
C)  String str = integer(number); 
D)  String str = number.Integer.toString(str); 
A)  String str = Integer.toString(number); 
B)  String str = integer.toString(number); 
C)  String str = integer(number); 
D)  String str = number.Integer.toString(str);

Question 13

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

Accepted Answer

A)  15 
B)  16 
C)  0 
D)  -1 
A)  15 
B)  16 
C)  0 
D)  -1

Question 14

When using the String class's trim method, which of the following cannot be trimmed?

Accepted Answer

A)  Space 
B)  Tab 
C)  Semicolon 
D)  Newline 
A)  Space 
B)  Tab 
C)  Semicolon 
D)  Newline

Question 15

You cannot assign a value to a wrapper class object.

Accepted Answer

A) True 
 B)False

Question 16

Use the following import statement when using the Character wrapper class:

Accepted Answer

A)  import java.Char 
B)  import java.lang.Char 
C)  import java.String 
D)  No import statement is needed 
A)  import java.Char 
B)  import java.lang.Char 
C)  import java.String 
D)  No import statement is needed

Question 17

The String class's valueOf() method accepts a value of any primitive data type as an argument and returns a string representation of the value.

Accepted Answer

A) True 
 B)False

Question 18

Two ways of concatenating two Strings are:

Accepted Answer

A)  Use the concat() method or use the + between the two Strings 
B)  Use the concatenate() method or use the + between the two Strings 
C)  Use the contenate() method or the concat() method 
D)  Use the concat() method or the trim() method 
A)  Use the concat() method or use the + between the two Strings 
B)  Use the concatenate() method or use the + between the two Strings 
C)  Use the contenate() method or the concat() method 
D)  Use the concat() method or the trim() method

Question 19

Autoboxing is:

Accepted Answer

A)  Java's process of automatically "boxing up" a value inside an object 
B)  The automatic allocation array elements 
C)  The process of assigning a default value to primitive data types 
D)  The process of identifying tokens in a string 
A)  Java's process of automatically "boxing up" a value inside an object 
B)  The automatic allocation array elements 
C)  The process of assigning a default value to primitive data types 
D)  The process of identifying tokens in a string

Question 20

For the following code, how many times would the for loop execute?
String str = ("Ben and Jerry's ice cream is great.");
String[] tokens = str.split(" ");
For (String s : tokens)
System.out.println(s);

Accepted Answer

A)  1 
B)  3 
C)  5 
D)  7 
A)  1 
B)  3 
C)  5 
D)  7

If more than one character is used as a delimiter, we must write a loop to determine the tokens, one for each delimiter character.

To convert the string, str = "285" to an int, use the following statement:

Which of the following statements will print the maximum value a double variable may have?

What will be the tokens given the following statements? String str = ("January 1, 2016"); String[] tokens = str.split(" ");

What will be printed after the following code is executed? String str = "abc456"; Int m = 0; While ( m < 6 ) { If (Character.isLetter(str.charAt(m))) System.out.print( Character.toUpperCase(str.charAt(m))); M++; }

For the following code, how many times would the for loop execute? String str = "1,2,3,4,5,6,7,8,9"); String[] tokens = str.split(","); For (String s : tokens) System.out.println(s);

If you are using characters other than whitespaces as delimiters, you will probably want to trim the string before tokenizing; otherwise, the leading and/or following whitespaces will become part of the first and/or last token.

Which of the following methods of the String class can be used to tokenize a string?

If a non-letter argument is passed to the toLowerCase or toUpperCase method, the boolean value False is returned.

You can change the contents of a StringBuilder object, but you cannot change the contents of a String object.

The Character wrapper class provides numerous methods for:

To convert the int variable, number to a string, use the following statement:

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

When using the String class's trim method, which of the following cannot be trimmed?

You cannot assign a value to a wrapper class object.

Use the following import statement when using the Character wrapper class:

The String class's valueOf() method accepts a value of any primitive data type as an argument and returns a string representation of the value.

Two ways of concatenating two Strings are:

Autoboxing is:

For the following code, how many times would the for loop execute? String str = ("Ben and Jerry's ice cream is great."); String[] tokens = str.split(" "); For (String s : tokens) System.out.println(s);

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Classes

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Inheritance

Exceptions and Advanced File IO

A First Look at GUI Applications

Advanced GUI Applications

Applets and More

Creating GUI Applications With Javafx and Scene Builder

Recursion

Databases

Filters

Exam 9: Text Processing and More About Wrapper Classes

If more than one character is used as a delimiter, we must write a loop to determine the tokens, one for each delimiter character.

To convert the string, str = "285" to an int, use the following statement:

Which of the following statements will print the maximum value a double variable may have?

What will be the tokens given the following statements? String str = ("January 1, 2016"); String[] tokens = str.split(" ");

What will be printed after the following code is executed? String str = "abc456"; Int m = 0; While ( m < 6 ) { If (Character.isLetter(str.charAt(m))) System.out.print( Character.toUpperCase(str.charAt(m))); M++; }

For the following code, how many times would the for loop execute? String str = "1,2,3,4,5,6,7,8,9"); String[] tokens = str.split(","); For (String s : tokens) System.out.println(s);

If you are using characters other than whitespaces as delimiters, you will probably want to trim the string before tokenizing; otherwise, the leading and/or following whitespaces will become part of the first and/or last token.

Which of the following methods of the String class can be used to tokenize a string?

If a non-letter argument is passed to the toLowerCase or toUpperCase method, the boolean value False is returned.

You can change the contents of a StringBuilder object, but you cannot change the contents of a String object.

The Character wrapper class provides numerous methods for:

To convert the int variable, number to a string, use the following statement:

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

When using the String class's trim method, which of the following cannot be trimmed?

You cannot assign a value to a wrapper class object.

Use the following import statement when using the Character wrapper class:

The String class's valueOf() method accepts a value of any primitive data type as an argument and returns a string representation of the value.

Two ways of concatenating two Strings are:

Autoboxing is:

For the following code, how many times would the for loop execute? String str = ("Ben and Jerry's ice cream is great."); String[] tokens = str.split(" "); For (String s : tokens) System.out.println(s);

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Classes

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Inheritance

Exceptions and Advanced File IO

A First Look at GUI Applications

Advanced GUI Applications

Applets and More

Creating GUI Applications With Javafx and Scene Builder

Recursion

Databases

Filters