Basic Grading Program - Output Should Be Printed With Suitable Labels
Oct 6, 2014
Write a program to request a student number and their marks in 4 subjects. The program must print the student number, total marks and average mark. All outputs should be printed with suitable labels
This is the error am getting
Scanner get = new Scanner (System.in) - got a red line
int student number, total marks, average mark - got a yellow bulb with a red exclamation mark on it.
I just dont understand where the errors is where what the system dont have ... I am using netbeans ....
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Nov 12, 2014
I am aware that the default value of char is 0. But in this program I am getting some unexpected output
public class TestClass12{
static int[] ia = new int[1];
static char ch;
public static void main(String args[]) throws Exception{
System.out.println("ch:"+ch+" ia[ch]:"+ia[ch]);
}
}
Output:
ch: ia[ch]:0
If you see the above output ch is printed as a blank space instead of 0, while the array default value is correctly printed by taking the char default value as index. Why is ch printed as blank space?
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Jul 21, 2014
If I code:
int num0=0,num1=1,num999=999;
System.out print(num0+","+num1);
System.out println(","+num999);
I believe I'll get: 0,1,999 but I want 0000,0001,0999 i.e. a width of 4 for small integers.
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Jan 19, 2014
I have the following code....................
double[][] cmMatrix = eval.confusionMatrix();
for(int row_i=0;row_i<cmMatrix.length; row_i++){
for(int col_i=0;col_i<cmMatrix.length;col_i++){
myConsole.getOut().println(cmMatrix[row_i][col_i]);
myConsole.getOut().println("|");
}
myConsole.getOut().println();
}
What do I need so that each row is printed out on a single line ?
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Aug 20, 2014
Ok so this is a grading program. I have it so the user can input 2 students and then at the end using an if statement it is suppose to compare them and print out who had the higher grade. Seems simple but it never runs the line of code to print out whos grade is higher:
if (stuAverage > stuAverage2 ){
System.out.println(student + " has the highest grade of all students entered!");
}
else if (stuAverage2> stuAverage){
System.out.println(student2 + " has the highest grade of all students entered!!");
}
Here is the Main class:
import java.util.Scanner;
public class Main2 {
int stuAverage;
static String student;
[code]....
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Sep 26, 2014
i have a similar problem but what i need to do is to detect an exused absent of which in my notepad is represented by 00 and 0 being an unexcused absent, anyway if a student has an excused absent example a quiz for that day will be deducted from the total quizzes example if i was the teacher and had 2 quizzes of 10 items each and she was absent in one of the quizes instead of let say her score was 9 on the first quiz it should go 9/10 and if it was an unexcused absent 9+0/20 anyway this is my java code and notepad example
import java.io.*;
import java.util.*;
import java.lang.*;
public class GradingSystem {
public static void main (String[] args) throws FileNotFoundException
[code]...
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May 23, 2015
Netbeans do not detect any syntax errors, but I when I check the build it retuned areas they were a few; It's a simple program name 5 people, gade them then do final calulatoins it's called "grade tool.
heres the code
package gradingapplication;
import java.util.Scanner;
public class GradingApplication {
public static double score(double score){
if(score >= 90){
System.out.println("A");
[code]...
~Problems~
1. It has no gui, I don't know java fx, is java groove used? awt is useful for creating spam bots in robot class, I know it's not very useful but it's so much fun.
2. the sections where I use the scanner.
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Nov 29, 2014
Many classes calculate a final grade by using a weighted scoring system. For example, "Assignments" might be worth (weighted at) 40% of your final grade. To calculate the portion of the final grade contributed by the Assignments category, the teacher takes the average of all assignments in the category and multiplies it by the weight (40%). So if a student averaged 90% on all assignments, the teacher would take 40% of 90%, or 36 as the weighted average score for the assignment portion of the the final score. The teacher then calculates the weighted average score for each of the other categories (Quizzes, Midterm Exam, Final Exam, etc.), adds them all together to come up with the final score, and assigns a letter grade based on that score.
Write a Java program that allows the teacher to calculate the grade for a student.
Specification :
Prompt the user to enter the Student ID number, first name, last name, and the average score for each of the following categories:
Assignments (worth 50%)
Quizzes (worth 20%)
Midterm Exam (worth 10%)
Final Exam (worth 20%)
Calculate the weighted average score for each category and the total score for the student. Next assign a letter grade as follows:
90 - 100 = A
80 - 89 = B
70 - 79 = C
60 - 69 = D
59 and below = E
Print the results in the following format:
Name: [Last Name], [First Name]
Student ID: [Student ID]
Assignments: [weighted average]
Quizzes: [weighted average]
Midterm Exam: [weighted average]
Final Exam: [weighted average]
Total: [total score]
Final Grade: [letter grade]
Prompt the user to either enter another student or to quit. Continue the process until the user chooses to quit.
I almost done everything but I cant calculate a total score for the student or Assign a letter grade based on the score!!!!
package teacher_grade;
import java.util.Scanner;
public class teachergradeing {
public static void main (String[] args) {
//Scanner objective
[Code] ....
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Apr 7, 2015
I am trying to create a Hangman program using Arrays. When trying to compile my code I get the following error: 50: error: no suitable method found
for setCharAt(int,String)
method StringBuffer.setCharAt(int,char) is not applicable
method AbstractStringBuilder.setCharAt(int,char) is not applicable
Here's the code:
import java.util.*;
import java.io.*;
public class hangman {
public static void main() throws IOException {
Scanner kb = new Scanner(System.in);
String filename;
[code]....
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May 19, 2014
When i run the program it doesn't show all the text fields and labels and stuff but when i click btnTest_1 and go back to btnTest everything appears...
Java Code:
import javax.swing.*;
public class Frame extends JFrame{
private JTextField textField;
private JTextField textField_1;
public Frame(){
setTitle("Multifunctual Calculator");
[Code] ....
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Dec 10, 2014
What's wrong with the code.
public class alltheprime {
public static void main(int a) {
int i, j, k, l, m;
m=a;
k=0;
for(i=2;m>1;i++) {
for(l=2; l<i;) {
l=l+1;
[Code] ......
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Oct 22, 2014
Here is the outline of what the program should do: [URL] .....
So far I've got the very basics in place, I can't really figure out ptplot despite trying to research it online. The only other thing I know is that arrays are not to be used (initially I intended on using them). Here's my code:
//The next line imports the java.io package
import java.io.*;
//Imports math language
import java.lang.Math;
//import ptolemy.plot.*;
//Sets up class
public class cp5 {
//Declares class method called 'main'.
Code] ....
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Feb 27, 2014
Basic console java program. I need to generate an employee id. I have an employee class that I will paste here so you can see my fields and constructors.
public class Employee {
private String firstName;
private String lastName;
private int id;
public int nextUniqueId = 0;
public Scanner sc = new Scanner(System.in);
[Code] ....
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Nov 16, 2014
I was doing some exercises of a java tutorial website, and realized when I ran the code that they had , my program just kept running with no result, why is this? It just hangs.
package mystack;
public class MyStack {
private int maxSize;
private int[] stackArray;
private int top;
public MyStack(int s)
[Code] ....
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Jun 18, 2014
I have the program bellow that grades students(based on a two dimensional array with the answers) and i need to make it display the students based on the grades/scores in ascending order . I did that in two ways (using a array and a two dimensional array) but i have a hunch it can be done much more simple then i did it (but still using array object and nothing else ) .
public class GradeExam {
/** Main method */
public static void main(String args[]) {
// Students' answers to the questions
char[][] answers = {
[code]....
My first solution creating an array with the grades for sorting :
public class C8_3 {
public static void main(String args[]) {
// Students' answers to the questions
char[][] answers = {
{'A', 'B', 'A', 'C', 'C', 'D', 'E', 'E', 'A', 'D'},
{'D', 'B', 'A', 'B', 'C', 'A', 'E', 'E', 'A', 'D'},
[code]....
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Sep 25, 2014
on my note pad the 00 means that it is an excused absent while 0 is the unexcused:this one is the readfile saved on .txt
Bruce Wayne
9 9 00 19 49
10 0 10 9 9
90
50
87 87
some of the code:
if (inFile.next() == 00){
System.out.print("student has an excused absent how would you like to proceed");
}else{
grade = inFile.nextDouble();
qsum += grade;
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Jul 20, 2010
i want to create a program in java which counts the number of prints taken from a printer..
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Nov 22, 2014
I have written a class that uses a thread and i am getting wierd error message saying no suitable constructor found for Thread(Tunnel) doesn not like this line, Thread lb = new Thread (tunnel);
import java.lang.*;
public class leftBound implements Runnable {
Tunnel tunnel;
public leftBound(Tunnel tunneler) {
tunnel = tunneler;
Thread lb = new Thread(tunnel);
lb.start();
[Code] .....
works fine if i do this though
import java.lang.*;
public class leftBound implements Runnable {
Tunnel tunnel;
public leftBound(Tunnel tunnel) {
this.tunnel = tunnel;
Thread lb = new Thread(this);
lb.start();
[Code] .....
But how do i get it to compile without using "this" method.
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Mar 22, 2015
I started learning mysql to connect my program to a database but every time i try to connect I get this error.
java.sql.SQLException: No suitable driver found for dbms:mysql://localhost:3306/apexdemo
at java.sql.DriverManager.getConnection(DriverManager.java:596)
at java.sql.DriverManager.getConnection(DriverManager.java:215)
at JDBCdemo2.main(JDBCdemo2.java:7)
I did the following:
- added the mysql-connector-java-5.1.34 jar to my classpath
- added mysql jdbc driver to the project library
- double checked the url syntax and spelling errors
- checked that the server is running
import java.sql.*;
public class JDBCdemo2 {
public static void main(String[] args) {
Connection conn = null;
[Code] ....
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Jun 28, 2014
the number of lines that can be printed on a paper size, the point size of each character in a line, whether lines are double-spaced or single-spaced,the top and the bottom margins of the paper. assume that all characters are of the same point size, and all lines are either single-spaced or double-spaced. note that 1 inch = 72 points. make over, assume that the line are pointed along the width of the paper. for example, if the length of the paper is 11 inches and the width is 8.5 inches,then the maximum length of a line is 8.5 inches.write a program that calculates the number of characters in a line and the number of lines that can be printed on a paper based on following input from the user.
a.the length and width, in inches, of the paper.
b.the top, bottom, left, and right margins.
c.the point size of a line.
d. if the lines are double-spaced, then double the point size of each character
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Apr 24, 2014
So I built this comparator exactly the same way I built my others that are working.But the comparator for UserComparator is not being found for some reason.I will post my usercomparator class and JSP page.
<%@page import="tickets.UserComparator"%>
<%@page import="tickets.User"%>
<%@page import="tickets.ReporterTTComparator"%>
<%@page import="tickets.StatusTTComparator"%>
<%@page import="tickets.SystemTTComparator"%>
<%@page import="java.util.Collections"%>
<%@page import="java.util.ArrayList"%>
<%@page import="tickets.TroubleTicket"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
[code]....
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Apr 19, 2014
I am working in NetBeans and I am receiving numerous error messages with my code "not suitable constructor for lineItem.
import java.util.ArrayList;
public class Transaction {
private final ArrayList<LineItem> lineItems;
private int customerID;
private String customerName;
private String LineItem;
private int i;
[Code] .....
Specific Requirements for the Transaction Class :
1. The Transaction class should have a constructor with two parameters. The first is an integer containing the customer's ID and the second is a String containing the customer's name.
2. There should be a method to allow the addition of a line item to the transcript. The three parameters for the addLineItem method will be (1) the item name, (2) the quantity, and (3) the single item price.
3. There should be a method to allow the updating of a line item already in the transaction. Notice that updating an item means changing the quantity or price (or both). The parameters for the updateItem method are also (1) the item name, (2) the quantity, and (3) the single item price.
Notice that the updating of a specific line item requires a search through the ArrayList to find the desired item. Anytime a search is done, the possibility exists that the search will be unsuccessful. It is often difficult to decide what action should be taken when such an "exception" occurs. Since exception handling is not covered until later in this textbook, make some arbitrary decisions for this project. If the item to be updated is not found, take the simplest action possible and do nothing. Do not print an error message to the screen. Simply leave the transaction unchanged.
4. The transaction class needs a method called getTotalPrice to return the total price of the transaction.
5. There should also be a method to return information about a specific line item. It should return a single String object in the same format described for the LineItem class:
Colgate Toothpaste qty 2 @ $2.99 $5.98
Again, the possibility exists that the search for a specific line item will fail. In this instance, you should return a string containing a message similar to this:
Colgate Toothpaste not found.
6. The final method needed is a toString method. It should return the transaction information in a single String object. It should use the following format:
Customer ID : 12345
Customer Name : John Doe
Colgate Toothpaste qty 2 @ $2.99 $5.98
Bounty Paper Towels qty 1 @ $1.49 $1.49
Kleenex Tissue qty 1 @ $2.49 $2.49
Transaction Total $9.96
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Feb 15, 2015
I'm not sure why, but my program does not produce an output. It is supposed to output total charges.
/*This program provides the user with the price of their monthly internet service based on two inputs.The program asks users which subscription they have. The options are A, B, or C. This is the first input.
The program then will ask the user how many hours they used the internet for. This is the second input.Then, based on the package number, the program will compute their monthly bill. This is the output.
The program calculates the price based on the following prices:
Package A: For $9.95 per month, 10 hours of access are provided. Additional hours are $2.00 per hour.
Package B: For $13.95 per month, 20 hours of access are provided. Additional hours are $1.00 per hour.
Package C: For $19.95 per month, access is unlimited.*/
import java.util.Scanner;
public class Lab03SV
[code]...
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Apr 2, 2014
I am working on a keypad for a phone app for school. I cannot get the numbers from the keys to show up in the textField. I have made multiple tweaks, but think maybe my case statement is the problem?We did a calculator application in the class, so I have based my code off of that. Although the telephone keypad seemed much simpler to code, I can't seem to get the numbers to show up.
public void actionPerformed(ActionEvent e) {
//test for button clicks
foundKey = false;
//search for clicked key
for (int i=0; i<keys.length && !foundKey; i++)
[Code] ....
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Sep 18, 2014
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Jun 24, 2014
I am trying to have a user select from a printed out array list, instead of having the user type in the "bill type" each time there is a bill to avoid user error as much as possible. For example I would like to have it print out like this:
"Select bill type from list:
1. Rent
2. Car
3. etc..."
and I would like the user to choose a number and not type in the "bill type". I don't want to use "Switch case" because it would need to be an expanding and I don't think "switch case" can do that.
Here is the code:
package homebudget;
class Spending
{
//Do i need a totalAmount variable?
String type;
double amount;
int year, month, day;
public Spending()
[Code] ....
case 2:
//Give option to enter a new expense or pick from list.
//How to do this? If Statement that doesn't list duplicates, or a while search?
resp = JOptionPane.showInputDialog("Enter the type of expense:");
type = resp;
resp = JOptionPane.showInputDialog("Enter the amount of the expense:");
amount = Double.parseDouble(resp);
[Code] .....
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