Return Smallest Of 10 Doubles (User Input)

Oct 1, 2014

This code will let a user type 10 double's, and return the smallest of those 10 double's. But I don't really understand what happens in de last for-loop.

package hsleiden.webcat.exercise06_09;
import java.util.Scanner;
public class Exercise06_09
{
public static void main (String[] args){
double[] allNumbers = new double [10];
 
[Code] ....

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User To Input 10 Numbers - Find Smallest Element In Array

Dec 2, 2014

I am trying to write a code that asks the user to input ten numbers and then finds and displays the smallest number out of the ones given. I am supposed to implement arrays into the program to do this. But the problem I have run into is that when I compile the code in jgrasp, I am given several error messages and I am not quite sure what I have done wrong. I'm assuming it is either a syntax or a logical error on my part but reading over the code I do not understand what is causing these errors.

This is the most current draft of my code:

import java.util.Scanner;
 public class Exercise7_9 {
public static void main(String[] args) {
double[] numbers = new double[10];
//Enter ten double numbers: Scanner(System.in)
java.util.Scanner input = new java.util.Scanner(System.in);
System.out.println("Please enter ten numbers: ");

[Code] .... 
 
/* Sample Run:
Enter ten numbers: 1.9, 2.5, 3.7, 2, 1.5, 6, 3, 4, 5, 2
*/

And these are the exact error messages:

----jGRASP exec: javac -g Exercise7_9.java
Exercise7_9.java:35: error: '.class' expected
if (double m > list[i]) {
^
Exercise7_9.java:35: error: illegal start of expression
if (double m > list[i]) {

[Code] .....

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If I pass -150.00 it gives me -150.0 when I need two decimal places.

How can I go about doing this?

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/**
* Main method.
*
* @param args
* the command line arguments; unused here
*/
public static void main(String[] args) {
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[Code] .....

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import java.awt.* ;
import java.awt.event.*;
import javax.swing.*;
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JRadioButton bubble;
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[Code] .....

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public class PrimeNumber
{
Scanner scan = new Scanner(System.in);
int userNum;
String neg;

public void getUserNum()

[code]...

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My program has three Classes:

The information that must be tracked in the Course Class is:
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The information that must be tracked in the Student Class is:
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The Driver class will use the main method to print the user a prompt asking for inputs, then display all of the user's inputs after he/she wished to exit the program.

I'm having no trouble with asking the user for inputs and then checking the validations for the inputs, I'm currently struggling with return a String that houses all of the user's inputs for the variables above. The information must be returned in a method called toString(). Both the Student and Course Class must have a toString() method that returns the information in the class (value of the variables), I must then call upon these methods from the main method of the Driver Class to print them back to the user.

The toString methods within the Student & Course Classes are at the bottom of the code

To Summarize: What I need to do within the toString() methods to return the values the user has inputted for the various variables? Such as.. Should I pass something through the method? Do I need the this keyboard to pass through the variable again? I just fear that I'm currently misunderstanding a very critical part of programming.

My Driver Class

import java.util.Scanner;
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public static void main(String[] args) {

[Code] .....

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[Code] ....

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import java.util.*;
import javax.swing.JOptionPane;
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[highlight=java]
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[Code]....

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run:

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