How To Get Random Shapes To Generate Automatically
Aug 31, 2014
I am trying to get random shapes to generate automatically. I was able to get just three shapes to generate but nothing random. When I added the random code now only the frame shows up and no shapes. I also keep getting an error with frame.setVisible(true). It says identifier expected. Here is what I have so far:
Main program:
import javax.swing.*;
import java.awt.*;
import java.util.Random;
public class ShapeGen {
public static void main(String [] args) {
//Create window and set title
draw panel = new Draw();
[Code] ....
This is the draw program to generate random shapes:
import javax.swing.*;
import java.awt.*;
import java.util.Random;
public class draw extends JPanel {
public draw(Color backColor) {
setBackground(backColor);
I need a list of all the dates in 2014 in "YYYY-MM-DD" format (because I need to load them into a database), and I do not want to type them all myself. So is there a way to actually get it generated automatically?
The program I'm supposed to create generates a random number between one to ten. Then the program is to ask me if I wish to cross the road. If you choose to cross, the outcomes for 0-2 are "You crossed safely." For 3-5, 75% of the time it should say "RIP you got run over", and 35% of the time it should say "You crossed the street." For 6-8, 60% of the time it should say you made it.", and 40% of the time it should say "You died". For 9-10, it should say "RIP".
So far I have gotten the random number generation part working. I have up to here:
import java.util.Random; public class test4 { public static void main(String[] args) { Random random = new Random(); for(int i =0; i < 1; i++){ int num = random.nextInt(10) + 1; System.out.println("The number of cars on the street are: " + num + "Do you wish to cross the road?"); } } }
How would I get java to generate a random number from 0-2? all I've been able to find on random numbers is math.random which gives you from .0 to .10. you can multiply this by 10 to get 1-10 or by 100 to get 1-100 but how to make it so java will simply let me tell it the rand of numbers I want or get a random number in a range that is not a multiple of 10. and I can't seem to find anything about it anywhere.
I am currently taking a class in the field. My assignment is to generate 6 unique random numbers using a "Do While" expression. I might be mistaken but doesnt the inner loop execute first and then it works its way out? With this logic I believe my code should work but then again its not.
public class DoLottery { public static void main (String args[]) { int max= 10; int random; int random2; int random3;
[code]...
I originally had output at the end but decided to comment it out to see if code would execute if I placed it every time the test was true.
I have my code which will generate a random string using an ArrayList. However, I aso want to have it generate them in random lengths, not just using all the chars and numbers.
Trying to generate random integers, based off user-input for amount of integers, and then sort them into an array. The problem is that the second method needs to be int[] but I cannot figure out what to make the return result. The instructions say it needs to be an int[] in the UML diagram, so I know it's not supposed to be void.
Java Code:
public void generateNewSecret() { Random rand = new Random();{ for (int i=0; i<numDigitsSet; i++) { secretNumber[i]= rand.nextInt(10); System.out.println("" + secretNumber[i]);
The program is supposed to generate random dice rolls using the get and set methods. If the user doesn't specific how many sides the dice have, then it defaults at 6 with the constructor. The program runs but its generating 0's.
import java.util.Scanner; public class RollOfTheDice { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.println("Time to roll the dice, how many sides do they have?"); int numSides = input.nextInt();
I'm trying to generate random 100 numbers, from 0 to 9, in an array using Math.random, but it only outputs 0s which is very confusing to me. Also, I need to be able to count how many different integers there are like 0s, 1s, 2s... 8s, 9s.
Here's my code, I only got as far as the array then got stumped on the counting part.
import java.util.Arrays; public class countDigits { public static void main(String[] args) { //Create random generator and values int numbers = (int)(Math.random() * 10); int arrayCount = 1;
Instruction: You work for a telemarketing company and you are required to write a JAVA program that will generate a random phone number. (talk about a real-world application)
-The phone number should consist of 10 digits -The first 3 are the area code and should not begin with 0, 8 or 9 -The second 3 digits should not be greater than 742 and not less than 100. -The last 4 digits can be any digits -Print the number using the following format: "(xxx)-xxx-xxxx", this way it will look like a real phone number (use decimal formatting)
by this : Generating Random Numbers Using arithmetic operations
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.
How to reset the numbers to 0 in the final array ?
So I need to generate 10 random integers in the range 1-20 but i have to store them in an array called numbers. Then I have to call a method called displayArray which displays the contents of the array and for the assignment i have to use a for loop to traverse the array. The method header for the displayArray method is:
public static void displayArray(int[] array)
This is what I have done
public class RandomIntegers { static int numbers = 0; public static void displayArray(int[] array) { System.out.println(numbers + "Numbers Generated");
I tried out doing number (generated randomly) != (another number) but that does not work. If I for example want a number between 1 and 10, but I do not want the number 5, what can I do in order to make this happen?
I have a problem which can't solve it for 2 days search. I need to draw 3d shapes , i downloaded all packages and set an example code and run it ...
Exception in thread "main" java.lang.UnsatisfiedLinkError: no J3D in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java :1886) at java.lang.Runtime.loadLibrary0(Runtime.java:849) at java.lang.System.loadLibrary(System.java:1088)
import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.awt.geom.*; public class Game extends JPanel implements ActionListener, KeyListener{ Timer t = new Timer(5,this); double x = 0, y = 0, velx = 0, vely = 0;
[Code] .....
So why doesn't it work and what about the second dot.... ?
I am having issues with drawing shapes from bottom right to top left.
Issue:
- g.drawRect() will show like I am calling g.fillRect() - other shapes will not even show the shape in that area
Needs:
- g.drawSHAPE needs to show and not be filled unless I have my fill checkbox selected
The Program:
- Create a JFrame with a draw panel and a component panel - have a combobox with shapes that, when selected, will draw that shape in the draw panel - have a button that, when clicked, will launch JColorChooser to change the color of the drawn shape (draw panel is set to black) - have a checkbox that, when checked, fills the shape - have mouse listeners to adjust X and Y and will instantly update the shapes size to where you drag/click/press/release
Code for my drawRect():
Java Code:
// if statement to check if mouse drag X is less than starting X if(x2 <= x){ if(emptyORfill.isSelected()) // emptyORfill is my JCheckBox g.fillRect(x2, y, x-x2, y2-y); // x-x2 is the same as Math.abs(x2-x) else g.drawRect(x2, y, x-x2, y2-y);
[Code] .....
This is just for my Rectangle. This will show a filled rectangle when both mouse drag X and Y are less then the starting X and Y. If I take this fully functional code and adapt it to drawRoundRect(), the round rectangle wont even show the shape when mouse drag X and Y are less than the starting X and Y but will be fine if one or the other is less than the starting X or Y. NOTE: This same exact code worked on my classmates laptop in her program, but in my program on her laptop it did not. She took out the "else" in the else if's and just made them if statements all the way down and it worked on her laptop in my program, but the same "fix" did not work on my pc.
My mouse listener just sets X and Y values in my Shape class that updates my shape methods. I have an item listener for my comboBox that sets default values when a new selection is made and enables/disables editable on my fill checkbox for certain shapes. My action listener looks for the button click and the checkBox click.
Write a class that has three overloaded static methods for calculating the areas of the following geometric shapes:
• circles -- area = π*radius^2 (format the answer to have two decimal places) • rectangles -- area = width * length • trapezoid -- area = (base1 + base2) * height/2
Because the three methods are to be overloaded, they should each have the same name , but different parameters (for example, the method to be used with circles should only take one parameter , the radius of the circle).
Demonstrate the methods in a program that prints out the following areas, each on a separate line:
• the area of a circle with radius 3 • the area of a rectangle with length 2 and width 4 • the area of a trapezoid with base lengths 3 and 5 and height 5
SAMPLE RUN #1 --- Prompts For Keyboard/Console/Standard Input --- Inputs Outputs --- Monitor/Console/Standard Output --- 28.27 8.0 17.5
What The Console Looks Like In An Interactive Session: (Note: this combines standard input with standard output )
>java Area 28.27 8.0 17.5
THIS IS MY CODE
import java.util.*; public class Area { public static double area(double radius) { return (double)(Math.PI*Math.pow(radius,2)); } public static int area(int length, int breadth)
I'm trying to make a simple program that will feature some graphics. It will have a JCombobox that the user selects to draw various shapes. I can't get the repaint function to work however.
I've done basic programming in java using Netbeans IDE. So I've good foundational knowledge in java programming. Now I looking forward to draw shapes in java and eventually learn to make simulations. Now I want to learn to create geometric shapes like circle triangle, rectangle etc. I don't know in which Jcomponent(s) should I set the drawing of the shapes, the codes, the libraries and classes I need to import.
Is there some way to create compound shapes/paths in JavaFX?
For the record I'm not implying the use of the methods intersect, subtract, or union. These produce other shapes. A compound shape/path is one that has a knockout of some sort. For instance, a circle within a circle, such as in a 2d donut shape. Alternatives do not include a circle with a thick stroke nor an overlayed circle with the background color. Specifically, JavaFX supports the FillRule, in the case of the Path object. However, there doesn't appear to be an "add" method as there was in the Area shape in Swing.
How to make shapes move at same time when user enter up it should move up. It works for rectangle but i don't know how to move the others like that. (btw i am new to java). How can i do that?
I have a problem with a shape generator. It randoms the shapes just fine, I just do not know how to make all the shapes fully stay within the frames border.
RandomShapeMaker.java
import java.awt.Color; import java.awt.Graphics; import javax.swing.JPanel; import java.util.Random; public class RandomShapeMaker extends JPanel{ private static final Random randomShape = new Random(); public void paintComponent( Graphics g ){ super.paintComponent( g );
