HomeworkLib
Question

6. Consider these questions about memory-answers are in HFJ Chapter 3 a. (5 pts) Assuming the same JVM, can the amount of mem

java help plz.

engineering   Computer-Science   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

a) Assuming the same JVM , the object reference for different objects does not differ. Because object reference is just a compressed pointer telling us that we have an object of this data type which is still not allocated any memory yet. So as this object is not live , it does not depends on the datatype anymore and hence the memory is not dependent on the type of object it is pointing to .

b) Assuming the same JVM, the amount of memory taken up by the object itself is highly dependent on what kind of object it is. Because each object in the a machine has different size allocated to it , and hence based on what kind of object you are declaring , the size of the object depends a lot on what data type you are declaring it for. for ex .int has 4 bytes , char has 1 byte ,string size depends on the no of character its holding and so on

c) When we talk about object reference , we are talking about a virtual reference to a datatype which has still not been allocated some memory. Hence it's clear that it does not depend on what type of data it is pointing to , but the memory allocation depends on what is architechture of the machine and which JVM you are using . and hence the memory allocation will differ based on which JVM you are using.

0 0
Add a comment
Know the answer?
Add Answer to:
java help plz. 6. Consider these questions about memory-answers are in HFJ Chapter 3 a. (5...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Question 4 1 pts Comparing the amount of memory required by selection sort and insertion sort,...

    Question 4 1 pts Comparing the amount of memory required by selection sort and insertion sort, what can one say? Insertion sort requires more additional memory than selection sort Selection sort requires more additional memory than insertion sort O Both methods require about as much additional memory as the data they are sorting Neither method requires additional memory None of the above Question 5 1 pts The type of the reference, not the type of the object, is use to...

  • 1). The result of Java expression 5*7>3*(5+2) && 3*5-4<6 is ____ a. 35>35&&9<6 b. true &&...

    1). The result of Java expression 5*7>3*(5+2) && 3*5-4<6 is ____ a. 35>35&&9<6 b. true && false c. false d. False (2). You save text files containing Java language source code using the file extension___ a. .java b. .class c. .txt d. .src    (3). Which of the following is not a primitive data type in the Java programming language? a. boolean b. byte c. int d. Point (4). Given the Java statement int[][] vari = new int[5][7]; the value...

  • This question is about java program. Please show the output and the detail code and comment.And...

    This question is about java program. Please show the output and the detail code and comment.And the output (the test mthod )must be all the true! Thank you! And the question is contain 7 parts: Question 1 Create a Shape class with the following UML specification: (All the UML "-" means private and "+" means public) +------------------------------------+ | Shape | +------------------------------------+ | - x: double | | - y: double | +------------------------------------+ | + Shape(double x, double y) | |...

  • Need help with this Java. I need help with the "to do" sections. Theres two parts...

    Need help with this Java. I need help with the "to do" sections. Theres two parts to this and I added the photos with the entire question Lab14 Part 1: 1) change the XXX to a number in the list, and YYY to a number // not in the list 2.code a call to linearSearch with the item number (XXX) // that is in the list; store the return in the variable result 3. change both XXX numbers to the...

  • Status Topic Interfaces Description Video Scene Problem Consider a video scene in which we want to...

    Status Topic Interfaces Description Video Scene Problem Consider a video scene in which we want to display several different types (classes) of objects. Let's say, we want to display three objects of type Deer, two objects of type Tree and one object of type Hill. Each of them contains a method called display. We would like to store their object references in a single array and then call their method display one by one in a loop. However, in Java,...

  • // I need help with the following questions. Please use java programming ECLIPSE language to solve...

    // I need help with the following questions. Please use java programming ECLIPSE language to solve the questions. YOU ONLY NEED TO DIRECTLY COPY IT IN YOUR ECLIPSE APPLICATION AND RUN IT. I NEED THOSE PART WHICH IS SAYS --> "TO BE COMPLETED" I NEED HELP WITH [GET*] AND [REPLACE ALL] AND [ADD INT DOUBLE] PLEASE. import java.util.ArrayList; public class CustomArrayList { //instance variables public int[] data; //data.length gives the capacity public int nItems; //nItems gives items currently in the...

  • Question set 1 (Java) object oriented: 1.Write a class called Student. The class should be able...

    Question set 1 (Java) object oriented: 1.Write a class called Student. The class should be able to store information regarding the name, age, gpa, and phone number of a Student object. Please write all the setter and getter methods. Finally, write a Demo class to demonstrate the use of the class by creating two different objects. 2.Use the same Student class from the previous problem. This time,you will write a different Demo class, in which you will create three Student...

  • Part Two: Fill in the Blanks and True/False (24 total points - 2 points each) For...

    Part Two: Fill in the Blanks and True/False (24 total points - 2 points each) For each of the following, fill in the most appropriate word(s)phrase/solution in each blank 1) Keywords, identifiers and literals are all kinds of are simply groups of characters that are used for various purposes in a program. , which 2) The Java expression: 11 - 2 + 3 evaluates to 3) List the Java boolean (logical) operators in order from highest priority to lowest priority...

  • Please comment the important lines in the .java file as shown in the template. The important...

    Please comment the important lines in the .java file as shown in the template. The important lines including but not limited to i) variables, ii) for-loop, iii) while-loop, iv) if-else statement, iv) methods. Please use your own words to describe what is your purpose to write this line. Panther ID - 002357394 Purpose: Instance variables belong to the instance of a class, i.e., an object. Every object of that class has its own copy of that instance variable. Changes made...

  • In Java plz due today Assignment 4 - Email, Shwitter and Inheritance Select one option from...

    In Java plz due today Assignment 4 - Email, Shwitter and Inheritance Select one option from below. All (both) options are worth the same number of points. The more advanced option(s) are provided for students who find the basic one too easy and want more of a challenge. OPTION A (Basic): Message, EMail and Tweet Understand the Classes and Problem Every message contains some content ("The British are coming! The British are coming!"). We could enhance this by adding other...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT