1. Which of the following is not the name of a Java wrapper class from the Java API?

A. Byte
B. Int
C. Long
D. Boolean*

2. Which of the following statements will cause a compiler error?

A. Integer i = new integer ( ) ;*
B. Integer j = new integer ("5") ;
C. Integer k = Integer.valueOf ("5");
D. int m = Integer.pareseInt ("5");

3. If variables j and k refer to objects of type Double and j . compareTo (k) returns a value of 1, which of the following is true?

A. The double value held in j is less than the value held inside k.
B. The difference between values held in j and k is 1.*
C. The double values held inside j and k are both positive.
D. The double value held inside j is greater than the value held inside k.

4. What is a radix as used in the method parseInt (String s, int radix) from the integer class?

A. A numeric base 2 such as for binary or 16 for hexadecimal.
B. The number of characters in the string that represent integers.*
C. The Unicode character code to be used when parsing the string.
D. The number of times the string should be repeated before being converted to an int.

5. Which of the following is a static method of the integer class?

A. intValue ( )
B. parseInt ( )
C. toString ( )*
D. compareTo ( )

6. Which of the following statements will cause a compiler error?

A. Double a = new Double (10.6) + 3;
B. Integer b = 0;*
C. Double c = 0;
D. int d = new Integer (7) ;

7. Which of the following is not an example of autoboxing?

A. Boolean a = false
B. Integer b = new integer (9);
C. double x = 3.0;
Double c = x;
D. Character d = ‘2’;*

8. What is the result of the following code fragment?

BigInteger a = new BigInteger (“10”);
BigInteger b = new BigInteger (“25”);
a . multiply (b);
a . add (b);
System.out.println (a);

A. 10
B. 35
C. 250 *
D. 275

9. What is the name of the BigInteger method that will calculate the remainder of division by another BigInteger?

A. modulo ( )
B. modulus ( )*
C. divisor ( )
D. remainder ( )

the ones marked in asterisks are my answers, I'm not totally sure if they're right and would like someone to double check for me

Answer:

1. Which of the following is not the name of a Java wrapper class from the Java API?

A. Byte

B. Int

C. Long

D. Boolean

Int is not a wrapper class  

Byte is the wrapper class of byte, Int is not a wrapper class and is a primitive data type, Long is a wrapper class of long, Boolean is a wrapper class for boolean. Hence Int is the correct answer and its wrapper class is Integer.

2. Which of the following statements will cause a compiler error?

A. Integer i = new integer ( ) ;

B. Integer j = new integer ("5") ;

C. Integer k = Integer.valueOf ("5");

D. int m = Integer.pareseInt ("5");

“I” in integer in A and B must be in capital.

3. If variables j and k refer to objects of type Double and j . compareTo (k) returns a value of 1, which of the following is true?

A. The double value held in j is less than the value held inside k.

B. The difference between values held in j and k is 1.

C. The double values held inside j and k are both positive.

D. The double value held inside j is greater than the value held inside k.

Compareto return 1 if first value is greater than with what it is compared.

4. What is a radix as used in the method parseInt (String s, int radix) from the integer class?

A. A numeric base 2 such as for binary or 16 for hexadecimal.

B. The number of characters in the string that represent integers.

C. The Unicode character code to be used when parsing the string.

D. The number of times the string should be repeated before being converted to an int.

The radix value is 10 for decimal, 2 for binary and 16 for hexadecimal. Radix is the base or number of unique digits.

5. Which of the following is a static method of the integer class?

A. intValue ( )

B. parseInt ( )

C. toString ( )

D. compareTo ( )

ParseInt() is a static method of the integer class, and rest are non static methods.

6. Which of the following statements will cause a compiler error?

A. Double a = new Double (10.6) + 3;

B. Integer b = 0;

C. Double c = 0;

D. int d = new Integer (7) ;

In A and C data type does not matches like Double c=0 means Double c=new int(0) which is never true.

7. Which of the following is not an example of autoboxing?

A. Boolean a = false

B. Integer b = new integer (9);

C. double x = 3.0;

Double c = x;

D. Character d = ‘2’;

Autoboxing brings out reference type from the value type, and this is not true for A  

8. What is the result of the following code fragment?

BigInteger a = new BigInteger (“10”);

BigInteger b = new BigInteger (“25”);

a . multiply (b);

a . add (b);

System.out.println (a);

A. 10

B. 35

C. 250

D. 275

a.multiply(b) = 250

a.add(b)= 250+25=275

9. What is the name of the BigInteger method that will calculate the remainder of division by another BigInteger?

A. modulo ( )

B. modulus ( )

C. divisor ( )

D. remainder ( )

Remainder is the correct answer.

Explanation:

Please check answer.

what is a paragraph on what i can write on what i learned from watching basic keyboard shortcuts using control functions video

Parts of a Computer

Question 3 of 9

Which part looks like a TV screen and lets you see your work and your

3

files?

Computer Case

Printer

Mouse

Monitor

Submit Answer

Please help I’m incredibly confused

what does it mean to present a document online?

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blank uses computer resources from multiple locations to solve a common problem.

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B) It's a keyboard
C) A type of frog

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True or False

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A business letter should always include the address of the sender.
True
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Write a program that asks the user for three strings.

Then, print out whether or not the first string concatenated to the second string is equal to the third string. Don’t worry about spaces at the beginning or ending of strings unless you want to! The code for the user to input the three strings is already written for you.

Here are a few sample program runs:

Sample Program 1:

First string? pepper

Second string? mint

Third string? peppermint

pepper + mint is equal to peppermint!

Sample Program 2:

First string? go

Second string? fish

Third string? donuts

go + fish is not equal to donuts!

import java.util.Scanner;

public class ThreeStrings

{

public static void main(String[] args)

{

Scanner input = new Scanner(System.in);


System.out.println("First String? ");

String first = input.nextLine();


System.out.println("Second String? ");

String second = input.nextLine();


System.out.println("Third String? ");

String third = input.nextLine();


//Start your code here.


}


}

Which of the following tasks is least effective at preventing a computer virus?
a
Anti-virus software is up-to-date.

b
Anti-virus software performs routine scans.

c
Anti-virus software is set to scan your computer weekly.

d
Anti-virus software scans all documents that are downloaded.

Why are charts and graphs included in documents rather than just raw data?

After a new technology is purchased, what are some additional costs that must be incorporated into an upgrade budget?

In which place does essential computing of computer takes place at?
option
1]microprocessor
2]ram
3]motherboard
4]none

Which option ensures that a page break is automatically inserted ahead of a specific paragraph or heading?

the Page Breaks Before option in the Paragraph dialog box
the Keep With Next option in the Paragraph dialog box
the Keep Lines Together option in the Paragraph dialog box
All of the above options are correct.

Which of the following is an advantage of algorithmic thinking? Select all that apply. Easier to understand Easier to understand Increases flexibility Increases flexibility Less complex Less complex Written as a flowchart or natural language


Please help Ill do anyting

In which place does essential computing of computer takes place at?
option
1]microprocessor
2]ram
3]motherboard
4]none

Katherine wants to open a bank account that allowed her to perform frequent transactions without being charged a penalty and she does not want to maintain a minimum balance. What type of bank account should she open?

A data unit created at the transport layer by UDP is a _____.


A. segment

B. packet

C. datagram

D. frame

A formula might be used to add expenses in a spreadsheet. True False

i will mark brainlist

Lei is being cyberbullied by a group of girls. What advice would most help Lei? Share an unflattering photo of the bullies to get them back Immediately delete all evidence of the bullying Don't ignore or block the bullies online Talk to a trusted adult and get his or her perspective

Spreadsheet numbers and a graph cannot be placed on thesame worksheet.
True orFalse

x = 19 y = 5 print (x % y)

Bill has several workbooks open, and he would like to see them all side by side on the screen. Which option on the
Arrange All menu should he use?
Tiled
Cascade
Horizontal
Vertical

Normally, by the time teenagers have finished high school, they have formed their own identities and belief systems and have less
need for
against authority figures.

what is computer system​

Does anyone know how to snip or like screenshot the screen?

Which tab in the AutoCorrect dialog box enables you to specify that the corrections will automatically take place only when you attempt to change the respective errors in the document?