package TheWorldCup;
import java.util.ArrayList;
import java.util.*;
public class WorldCup2014{
public static void main(String args[]){
ArrayList<String> WorldCupTeams = new ArrayList<>();
[Code] ....
What it is doing is printing the team name and all eight groups and showing the group is: team name under. I want it to print out the team name, put it into a group and print out the group. Once 4 teams in a group, close that group off, do this until all groups are filled. How can I do this?
Displaying the records in a table. I am looking for a group header to be placed above each printed table for its related category and subcategory, as well as, the no. of the records for each table to be shown at the top of the table.
The table contains columns for category, subcategory, name. ex:
Category Subcategory Name
CON Retail AAA
CON Wholesale BBB
SPEC Retail CCC
What I am looking for is the below layout:
Category/Subcategory (No. of records) –similar to a group header
Name – Country ..etc ----Table header
table records
Here is my code below:
<% //Retrieve the values from the DB while (rs.next()) { category_name1=rs.getString("category_name"); subcategory_name1=rs.getString("subcategory_name");
[code]....
The problem in the above code is that it is showing the group headers category & sub category multiple times and the count is incorrect.
import java.util.Scanner; public class AvgLrgSml{ public static void main(String[]args){ System.out.print("Hello there. Please enter any three numbers."); Scanner keyboard = new Scanner(System.in); double num1 = keyboard.nextDouble(); double num2 = keyboard.nextDouble();
How do you make it so that you can select 2 buttons in a radio button group? for example: If I have 7 radio buttons, and I want to be able to select 2 of the 7 instead of 1.
I am making a tile based top-down 2D RPG and am using Box2D for the physics. Since my game is tile-based, there are many tiles on each map that cannot be moved through. This results in many small individual Box2D bodies. This is obviously very inefficient and makes the game lag. Therefore I figured that combining the individual tiles' bodies into larger complex groups would be better.
The way I thought of doing it is to, first, group together tiles into groups of tiles that all share 2 vertices with at least one other tile in the group. Then, for each group I do the following. First I get all of the uncommon vertices (these should be the ones on the outside of the polygon). Then I connect all of those vertices and then remove all of the overlapping lines. This should result in only lines on the outside of the polygon. Then I sort the lines so that the first line in the sorted array shares its end point with the second line's start point, etc. Then I remove the doubled vertices and using those remaining vertices (I called them the "true vertices") I create the polygon. I know that Box2D only supports convex polygons, but with Box2DSeparator I should be able to do this, but I first want this method to actually work.
/** * Attempts to combine the given blocks into larger bodies to improve performance. * @param bs The created wall blocks. * @param w The world. Used for body creation. */ private void makeLargeBodies(Block[][] bs, World w) { Array<Tile> tiles = new Array<Tile>(); for(int i = 0; i < bs.length; i++) {
[Code] .....
However, this is where the first problem arises. This method is extremely slow for large maps (like 200x200 tiles). I have worked at this for very long and right now my head can't figure out how to make the loop more efficient...
Now for the next part. After that I attempt to create the bodies for the TileGroups:
//create all the groups' bodies size = groups.size; System.out.println(size + " groups"); for(int i = 0; i < size; i++) { TileGroup g = groups.get(i); System.out.println("Starting group " + i + "."); long timeCheck = TimeUtils.millis(); g.createBody(w); System.out.println("Group 0 took " + (TimeUtils.millis() - timeCheck) + " millis"); }
*Note that the printing is for debugging purposes*...
This method is probably not a problem; it is what is inside createBody(World) that is the issue...
public void createBody(World w) { Array<Vector2> allVertices = new Array<Vector2>(); Array<Vector2> uncommonVertices = new Array<Vector2>(); System.out.print("Starting search for uncommon vertices. "); long timeCheck = TimeUtils.millis();
[Code] .....
Most of the code is self-explanatory (with comments). My current issue is where I connect the uncommon vertices (see the printed statements). This method does not actually finish (I have let it run for several minutes and it does not complete). This is likely due to a large number of vertices (often around 3000 in a 60x60 map), but I cannot figure out how to make the loop more efficient... Because of this early failure I don't know if the rest of the method works, both physically and in theory.
All relevant classes (Tile, TileGroup, Line) are below:
private class Tile { private Vector2[] vertices; private TileGroup group; public Tile(int x, int y) { vertices = new Vector2[4];
I am making an expert system using Jess about animals. I wanted to make an interface using Swing and so I did. I have a problem using group layouts. The application works fine but at the end a exceptions is thrown:
Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException: javax.swing.JLabel[,0,0,0x0,invalid,alignmentX=0.0, alignmentY=0.0,border=,flags=8388608,maximumSize=,minimumSize=, preferredSize=,defaultIcon=,disabledIcon=,horizontalAlignment=LEADING, horizontalTextPosition=TRAILING,iconTextGap=4,labelFor=, text=The animal is a cheetah.,verticalAlignment=CENTER, verticalTextPosition=CENTER] is not attached to a horizontal group
[Code] ....
The application ask the user some questions about the animal. When the expert system has enough information to know the animal it tells the name of the animal and shows a picture of it. The exception is thrown when the application has guessed the animal and shows the response.
I have to organize the rows from the lower to the higher number, the problem is, what I have only organizes the first 3 rows even If I insert 3,4,5...or 10 rows.
for (int i = arg[0].length - 1; i >= 0; i--) { for (int j = 0; j < i ; j++) { for (int k = 0; k < i ; k++) { if (arg[k][j] > arg[k][j + 1]) { int temp = arg[k][j];
class A { List<StringBuilder> list; public void output(List<StringBuilder> objectToOutput){ try(BufferedWriter bw = new BufferedWriter(new FileWriter("temp.txt"))){ for(StringBuilder row:objectToOutput) bw.write(row.toString()); }catch(IOException e){}
[code]....
Why don't the a's show up on the console? I put them in as part of the debugging process and now I don't understand why they don't show up in both places.
How do i make the 'date' column show only the date and 'timeIn' and 'timeOut' column only show the time. In my database table my 'date' column is a date type and 'timeIn' and 'timeOut' column is time.
I can't figure out how to print this string only five times. I tried to use the * operator, but that doesn't work with strings apparently, unles i'm not importing correctly.
import java.lang.String; public class Looparray { public static void main(String args[] { for (String myStr= "Hello there!";;) { System.out.print (myStr); System.out.print(" "); } } }
I'm trying to save to a table in a database that has only 2 fields, (id, nota) . I want to save the data several times just to click on "save" one look . The code that I have is this:
I have this code that prints the run time for each for loop iteration but how do I find the fastest time store it in a variable and the print that variable at the end? This is what I have currently.
for (int i = 1; i <= 14; i++) { int n = (int) Math.pow(2, i); int[] list = new int[n]; for (int j = 0; j < list.length; j++) { list[j] = (int) (Math.random() * 2000); } int length = list.length; double radixTime = radixSort(list, length); System.out.println("For base " + i + " the time was " + radixTime); }
I am trying to set my setter and getter various times o that I can store a name, price and value but i can only set it once. Once i try to set again the previous entry resets.I have tried
This sets the values for me and i receive the input i entered but if i try to enter again the input from before is removed.I have searched array lists and tried
[code] List<Object> list new ArrayList<Object>(); list.add(jobname) list.add(price) list.add(Event)
out.println(list.get(0));
for (Object s : list) { out.println(s); }
For this to work I would have to keep adding list.add. Is there a way I can use the array to add a new item to the list so that when I try to display what I have stored in the setter and getter it will display what I have entered in each time instead of only the last input? or any other way that may be possible to do this?
I have to put values in a FloatBuffer at different times. How can I ensure that I put the current value in the lowest free position, that is, the values be in a row, not spaced and of course not overwritten. I guess I have to use buffer.position() but how? I've never used buffers before.
I have made a basic math game that asks you questions and tells you if you have answered them correctly or incorrectly. The game runs great! The thing is that it asks you a question one time and after you answer you have to run the program again. I want to get the program to ask ten questions. After that I want to figure out a scoring system for it but the first step is to get it to ask my ten questions. Here is my code.
package pkgnew; import java.util.Scanner; import java.util.Random; public class New { public static void main(String args[]) {
I'm working on a problem that requires me to generator all possible word combinations based on a 7-digit number as input. Many of the generated "words" will be nonsense, but some with be "NEWCARS", "TAKEOUT", etc... This problem mimics the phone number a company would use to support clients remember that number.
I completed the exercise, but I would like to explore more elegant solutions. Specifically, I've used an IF-THEN-ELSE condition inside of a FOR loop. Here is my working code:
package com.johnny_v.exercises.telephone; public class WordGenerator { public static void main(String[] args) { int numOfTimes = 2187; String two = "ABC"; String three = "DEF"; String four = "GHI";
[code].....
I receive StringIndexOutOfBoundsException exceptions. I it's because multiple conditions are matched. For example, the indexSix is reset to 0 when row is a multiple of 9. Because row is also a multiple of 3, this condition also executes and then increments "indexSix".
I tried to make a program that takes a string str, and char a and checks how many times the char is used in the string.
Example: the string Welcome and the letter e, is 2 times. so the program should print 2.
It compiles but when I run it and enter the information, i cannot get the printing line out.
Heres my code:
import java.util.Scanner; class program { public static void main(String[] args) { Scanner user_input=new Scanner(System.in); String str; String b; System.out.print("Please enter a word");
I created a new servlet to download a pdf-file from a unix-server and display it in an iFrame. The servlet gets called, downloads the pdf, throws away the session parameters and then... starts over again. The session parameters aren't there anymore and the servlet returns an error. The strangest thing is, in our development environment the thing works.
I have this code but I can't seem to get it to work. It keeps saying that "count" cat be found and that it cannot return a value whose type is void.
Java Code: public class Cuantos { static int getPosition(double listOfValues[], double targetValue ) { int i,count, position = -1; for (i=0; i < listOfValues.length; i++) { if (listOfValues[i] == targetValue)
I'm working on a space invades game and I have a swing timer set up to update the score(number of aliens killed) and for the aliens to shoot. I'm trying to get the score to update at say 100 ms, but the aliens to shoot at 3200ms. I tried to use 2 timers one for the aliens, and one for the score,but the aliens would just use faster score timer.
I tried to make a program that takes a string str, and char a and checks how many times the char is used in the string. Example: the string Welcome and the letter e, is 2 times. so the program should print 2. It compiles but when I run it and enter the information, i cannot get the printing line out.
Heres my code:
import java.util.Scanner; class program { public static void main(String[] args) { Scanner user_input=new Scanner(System.in); String str; String b; System.out.print("Please enter a word"); str=user_input.next();
I am having is not being able to print out the diamond the amount of times the user enters (for example, when it asks how many diamonds, I enter a 2 and only one diamond comes out.)
import java.util.Scanner; public class Pattern5 { public static void main(String[] args) { // For this pattern program, ask the user how many diamonds // she would like to print to the screen. The following pattern is one diamond.
I am having issues with the first part of my program. When I got to display what is in the textfile, it only gives me one name two times. I cannot figure out what to do with my outer loop in order for it to read and output the entire data file.
