Intake Two Values And Output - How To Make Array Readable Without Error
Feb 25, 2015
How do I put this code in a way that it works because I know it is probably something obvious but I cant find how to make the array readable without error. It is supposed to intake two values and output what day of the week it is.
Testing Program
Initial day: Monday
Next day: Tuesday
Next day again: Wednesday
Previous day: Tuesday
Next week: Tuesday
Add 4 days from initial day: Friday
[Code] ....
ERROR ; Days.java:5: error: class, interface, or enum expected
String[] days = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"};
^
1 error
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Apr 3, 2015
I am writing a code that requires a user to input a number, then output the individual digits and then add the sum of the digits. I have the entire program written, but I cannot figure out how to make zeros output as individual digits. If I input 400, it only shows 4 and not 4 0 0. Here is the code:
import java.util.*;
public class week4program {
public static void main(String[] args) {
[Code].....
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Apr 15, 2015
I'd like the code that would return an object's human readable name.ie. myObject.getObjectsName();Which would return the name of the object That is, the name of the object that I use as I code.In the code below, I'm trying to find the correct code to return the string,btnTTT_01..The results of the testing follow.
public static void main(String []args) {
tictactoe game ;
game = new tictactoe();
game.setVisible(true);
System.out.println ("main") ;
System.out.println ( "game.getName() is: " + game.getName() ) ;
System.out.println ( " " );
[code].....
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Aug 30, 2014
I set these up, but the command console comes up, I don't see the "Hello World" in the window and it closes.
How can I get the output "Hello World!" to appear in a "cmd" window and stay there till i close it?
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Jan 12, 2011
In a project I'm ivolved in I have to dynamically add some components. All was going well until I had to generate data tables dynamically. I'm iterating a list of "SomeObject" and when I try to access a property of that object Glassfish tells me that object doesn't have such a property that is readable. I have getters for those properties and SomeObject implements Serializable as well. I used BalusC resources but I'm having no luck.
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Nov 4, 2014
I had to make a program that allows the user to enter 3 sides and it should output "invalid" if it does not make a triangle and if it does make a triangle it calculates the area of the triangle and it doesnt seem to do anything but say "invalid" as the out put.
import java.util.Scanner;
public class MyTriangle {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
boolean valid = true;
double side1, side2, side3, area, A;
[Code] ....
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May 27, 2014
So I just processed this rectangular array and made myself a table. I want to put a label for each column to identify what the values are. My attempt at this failed miserably, because it looks horrible. Here is the necessary code.
Java Code:
System.out.println();
System.out.println("FORMATTED RESULTS");
System.out.println(results);
values[rowCount][0] = currency.format(monthlyInvestment);
values[rowCount][1] = percent.format(interestRate/100);
values[rowCount][2] = Integer.toString(years);
values[rowCount][3] = currency.format(futureValue);
rowCount++;
[Code] .....
If you are to compile this yourself, you would see the horrible output at the end. I would like to know how to properly align each label with its corresponding column.
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Jan 28, 2015
I have a assignment to do some Lexigraphic ordering. I have figured how to get the majority of this done, however, when I input my string values. No output takes place? :s
import java.util.Scanner;
public class Lab03c {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner lexi = new Scanner (System.in);
String s1,s2;
[Code] ....
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Sep 28, 2014
I have this error that keeps coming up any time I select one of my buttons. It actually doesn't hinder the performance of the project, everything works. But I am concerned I missed something and errors are never a good sign.On a slightly different note, I would like to figure out what the best way to format my output would be? I would like it to display as "100.00 F". I have a couple ideas on how to get the F symbol (or other symbol) by inserting something like
String degreesymbol = "F" or whichever it is and then returning that in the output string later. I can't get the decimal formatted correctly and I don't know how to print the degree symbol.Here is the code
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;
[code]....
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Oct 14, 2013
I am screwing around with mouse listeners so i decided to make a basic paint program. It works fine but when it draws more than 100 circles it errors out. i know why its doing it (its because i set the array to 100) but my question is how to make it so it has not limit in the array.
Here is the code
public class PaintProject extends Applet {
int numClicks = 100;
int numCicles;
int xCoord[];
int yCoord[];
boolean paint;
[Code] .....
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Nov 28, 2014
I'm doing to create miles/kilometers converter. If I put the mile, converting to kilometer is right. However, if I put the kilometer, converting to mile comes out wrong value. Which part is wrong?
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
[Code] .....
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Oct 5, 2014
why the output is not giving the proper result? Is this a semantic error?
public class Programming1Practice {
/* testing out instantiation and object oriented programming */
public static class staticValues {
[Code]....
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May 5, 2014
I want to know if there is any general rule/pattern about things which give compilation fails and things which go for Runtime error/exception. OR only way is to remember all of them and there is no actual pattern in it.
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Jan 22, 2015
When I insert: title, category, year, artist in 4 Strings And when I press "enter" i put those 4 in a array "large", and then when I can start a new music insert with 4 new string elements and add those in the large array..So: I have an array "large" with the length 19 (or so..)(max ~100 or so)Then I what to: get,in a new array "title",the elements:0,4,8,12,16 (from the large array) and put them in a scrollable list. And when I select one element in the title array I then whant to get 3 remaining elements from this. And put it in a array called selection.
So the "large" and the "title" arrays must be dynamically sizes... or be copied to a larger sized..
1 can it be done with arrays?
2 how do dynamically change the size of for example the array "title"?
3 how do I receive the elements 0,4,8,12,16 and so on, (to (
large.length-3) and add it to the title array?
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Jan 22, 2015
I made a web app to test the ServletContextListener in tomcat according to the book head first servlets and jsps and used the code
out.println("test context attributes set by listener<br>");
Dog dog = (Dog) getServletContext().getAttribute("dog");
out.println("Dog's breed is: "+dog.getBreed());
in the listener class.But the output is showing the first line only and the second println() is not showing any output whereas my Dog class compiled successfully and I didn't see any NullPointerException as expected in the book but somehow it seems like the problem is in the 2nd line of code only but I don't know what.
I also tried to add a 4th line at the end with println() only but with a simple text even that is not running but when I put that same line after the 1st line, the output is shown.I am unable to see what has gone wrong in the 2nd line of code.
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May 15, 2014
Problem: On the form window, after pressing the button, it doesn't give any error and doesn't give any output. It doesn't reply and i have to stop compiling to exit. Why does the IDE do that, is it about my Java codes or Form Window codes ? ( I have two classes named Lexical.java and window.java. Working with Eclipse)
Details: I am working on a project that makes Lexical and Syntax analiysis of commands written in SQL Language. My form is in the attachment. If will be necessary i'll put my codes too.
Attached image(s)
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Jun 15, 2014
Write a method that returns a new array by eliminating the duplicate values in the array using the following method header: public static int[] eliminateDuplicates(int[] list). The thing is that I found the working solution that is written below, but how it works. How to eliminateDuplicates method done with flag and flag2.
Here is the code:
Java Code:
import java.util.Scanner;
public class Exercise06_15 {
public static void main(String[] args) {
java.util.Scanner input = new java.util.Scanner(System.in);
int[] numbers = new int[10];
System.out.println("Enter ten numbers: ");
[code]....
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Feb 16, 2015
filling out a Random array: An Array of Specific Length Filled with Random Numbers This time what I need to do is take the elements from this Random array and assign them to a new Byte array:
for(int i = 0; i < limit-10; i++) {
Random dice = new Random();
int randomIndex = dice.nextInt(array.length);
if (array[randomIndex] < 128) {
System.out.print(array[randomIndex] + " ");
} else if (array[randomIndex] >= 128) {
System.out.print(array[i] + " ");
}
}
byte[] noteValues = new byte[]
{ 64, 69, 72, 71, 64, 71, 74, 72, 76, 68, 76 }; //This is the byte array filled manually!
I've tried amending the manual input to fit in with the Random array, as follows:
byte[] noteValues = new byte[]
{ array[randomIndex] };
In this case, however, the Byte array can't interpret the int values. Also, if the Byte array is outside the 'for' loop, array[randomIndex] cannot be resolved.
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Apr 23, 2014
I'm not getting why my program is giving error.
package rockjava;
import java.text.NumberFormat;
import java.util.Scanner;
public class file4 {
public static void main(String[] args)
[Code] ....
Please Input Num of Pods + Num of Keys= 20.5
Exception in thread "main" java.util.InputMismatchException
at java.util.Scanner.throwFor(Unknown Source)
at java.util.Scanner.next(Unknown Source)
at java.util.Scanner.nextFloat(Unknown Source)
at alijava.file4.main(file4.java:14)
(It is not accepting double values. However working fine for integers.)
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May 17, 2014
public class ThreeStackArray
{
static int row = 10;
static int col = 2;
int[][] stack = new int[row][col];
//place numbers into the first row of array
public void push(int num)
[Code] .....
I found this program idea online. Make a array with three stacks. Either I jump out of bounds if I use "continue" instead of "break" in my loop in the push method. If I use break the output looks like:
12900
0000
0000
0000
0000
if I use continue the output looks like:
An error has occured java.lang.ArrayIndexOutOfBoundsException: 2
1212
1212
1212
1212
1210
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Oct 27, 2014
This is my code for the driver class:
import java.util.*;
public class SavingsAccountDriver {
public static void main(String[] args) {
System.out.printf("%10s%10s%10s%10s%10s" , "Month" , "Account #" , "Balance" ,
"Account #" , "Balance");
[Code] .....
Here is the output I get :
Month Account # Balance Account # Balance
----- --------- ------- --------- -------
0 10002 2000.00 10003 3000.00
1 10002 2002.00 10003 0.00
2 10002 2004.00 10003 0.00
3 10002 2006.01 10003 3030.00
4 10002 2008.01 10003 0.00
5 10002 2010.02 10003 0.00
6 10002 2012.03 10003 3060.30
7 10002 2014.04 10003 0.00
8 10002 2016.06 10003 0.00
9 10002 2018.07 10003 3090.90
10 10002 2020.09 10003 0.00
11 10002 2022.11 10003 0.00
12 10002 2024.13 10003 3121.81
Why is it not showing those months updated balance? I feel like I'm pretty close. I guess I should specify that this is supposed to calculate monthly interest for one account and quarterly interest for the other. This is what the output should look like.
Month Account # Balance Account # Balance
----- --------- ------- --------- -------
0 10002 2000.00 10003 3000.00
1 10002 2002.00 10003 3000.00
2 10002 2004.00 10003 3000.00
3 10002 2006.00 10003 3030.00
4 10002 2008.01 10003 3030.00
... ... 12 ... ...
The quarterly interest is the one that is giving me trouble.
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Oct 10, 2014
I'm trying to make this code's output display like a sentence, since right now it displays downward and doesn' look right.
public class ReverseOrder {
public static void main(String[] args) {
String phrase = "The rain in Spain falls mainly on the Plain";
char[] phraseArray;
phraseArray = phrase.toCharArray();
for(int i = phraseArray.length - 1; i >= 0; i--){
System.out.println(phraseArray[i]);
}
} // end main
} // end ReverseOrder class
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Feb 6, 2014
I want to Display the Index of output Array.
here is the code:
import java.util.ArrayList;
import java.util.List;
public class selection {
private static int[] numbers= { 1, 2, 4, 8, 16, 32, 64, 128, 250, 250, 250, 250, 250, 250, 250 };
private static int[] sumsum= new int[numbers.length];
private static int sum= 1759;
[Code] .....
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Nov 19, 2014
I've to read in an array of 1000 random numbers, and then my program sorts them depending on whether the user chooses bubblesort, selectionsort, etc...My code all works fine, my problem is with the actually output display. I have method that displays the content of the array that I call for the unsorted array, and for the sorted array. So at the moment the output to the user looks like:This program sorts an array of numbers by your choosing.
Array before sorting:
148
626
817
4
312
652
643
134
etc... for 1000 numbers
----------------------
1. Bubble Sort
2. Selection Sort
3. Insertion Sort
4. Merge Sort
5. Quick Sort
----------------------
Please enter your sort choice: 4
Array after sorting:
1
3
4
4
5
6
6
7
etc... for 1000 numbers
is there a way that I can display the unsorted and sorted array's content on various lines like so:
150 312 149 31 392 384 66
498 909 35 602 568 897 131
654 645 274 264 895 281 462
244 171 958 649 740 351 344
I just think it'll look nicer if I can do it like that.My display method looks like this:
//method to display array
public static int[] displayArray(int[] array){
//display array
for (int i =0; i < array.length; i++)
[code]...
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Jul 11, 2014
Write a program to create an integer array of size 20. Then, the program should generate and insert random integers between 1 and 5, inclusive into the array. Next, the program should print the array as output.
A tremor is defined as a point of movement to and fro. To simulate it, the program will generate a random number between 0 and 19, which represents the location in the array (i.e. index number). Then, the 3 numbers to the left and right of this location should be reset to the value 0. If there isn't 3 numbers to the left and right you may assume a lesser number depending on the boundaries of the array.
Then, the final array should be printed as output. There is no user input for this program.Your program must include, at least, the following methods:
-insertNumbers, which will take as input one integer array and store the random numbers in it.
-createTremor, which will generate the random number as the location and return it.
A sample run of the program is shown below:
Sample output #1:
Array:1 2 2 3 1 5 4 2 3 4 4 2 1 1 3 2 1 4 3 2 1
Random position: 5
Final Array:1 2 0 0 0 5 0 0 0 4 4 2 1 1 3 2 1 4 3 2 1
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May 3, 2014
My Code:
import java.io.PrintWriter;
import java.text.DecimalFormat;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
[Code] .....
It's suppose to store the products and how many you type in there (the quanitity).
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