35,618 Topics
 | |
| | I need to design a class called Building that represents a drawing of a building(the parameters to the constructor should be the building's height and width). I need to color the buildings black with a few random windows colored yellow. Then I need to make an applet that draws a … |
 | Hello everyone, I have a little question regarding a project for my class. We are making a tower defense game with ants and zombies objects for our project. My question is with this piece of code provided to us. /** * Callback invoked when the player attempts to recruit an … |
| | Hello everybody, this is the first time I'm going to create a real-life JAR, so maybe a bit stupid question but I'm totally out of ideas here... Okay, I have a project named WiWClient which depends on other project named common and requires libraries from lib (there are like 20 …  |
 | Pls.. Someone help me on how to display in JLabel the product with two decimal places after I click a button.. pls. help I am new in making a swing program |
| | Hi Guys, I'm new to Java and hoping someone can help me with this code. I started to work on this exercise to create a calculator app, and Im really stuck on two things: 1. NumberFormatExeption - NetBeans IDE keep show me this error: }catch(NumberFormatExeption e){ required: Throwable found: NumberFormatExeption … |
| | I need to design an application that makes a histogram that visually shows the distribution of a set of numbers. It has to read in numbers 1-100 and then produce a chart which labels how many of each number is input. So if my input is 1, 23, 17, 13, … |
| | Hi everyone, I need some help with my homework. I checked online and found loads of results but didnt understand much. I need to submit hw by tomm nyt .. 27hrs from now. Please help me if you can plz .. Here is my code snippet public static void main(String[] … |
 | Hello good day. I have a quick question is anyone able to assist me in saving a password file. I encrypted my password and so I want to save the salt and the encrypted password(which are byte arrays). I tried using a properties file, but I soon found out that … |
 | I hope this is the right location to make this post. I downloaded the source code for a rich text editor from; http://code.google.com/p/android-richtexteditor/ and the code will not compile correctly. The errors I get are; "Unable to resolve target 'android-4'", "AndroidManifest.xml file missing!", and in the Html.java file there are … |
| | I have this static block of code which is following Singleton design pattern. class Employee{ private static Employee emp; static { if (emp==null){ emp=new Employee(); } } public static Employee getEmployee(){ return emp; } } My doubt is if this code can be accessed by Mutiple threads concurrently and break … |
 | Hi there, I am just beginning to learn java right now, and have a real begeinner question. I ahve read that when you declare a float variable and ssigna value to it the number has to be followed by an "f". What I coudln't find out is why: `var floatNumber … |
| | **Can some one please help me with this ?** import java.util.*; public class Expression{ /* * Strings used for storing expression. */ String s, x; /* * Term evaluator for number literals. */ double term(){ double ans = 0; StringBuffer temp = new StringBuffer(); while( s.length() > 0 && Character.isDigit( … |
| | package hospitalclient; public class Person { static int idnumber= 1500; private String name; private String telephoneno; private char gender; private String nationality; //No Parameter constructor public Person() { name="unassigned"; telephoneno = ""; gender = 'M'; nationality = "Saudi"; } public int getid() { return idnumber; } // Accessor Methods public … |
| | /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package testelimination3; import java.util.Scanner; /** * * @author Nick */ public class TestElim { public static void main(String[] args){ Scanner input = new Scanner(System.in); System.out.println("Please enter a set of numbers"); int[] … |
| | Abstract—A video copy detection system that is based on content fingerprinting and can be used for video indexing and copyright applications is proposed. The system relies on a fingerprint extraction algorithm followed by a fast approximate search algorithm. The fingerprint extraction algorithm extracts compact content- based signatures from special images … |
| | Ok i made a chat thing for a forum i have but it didn't work but there was a detail box and this came up on it. "Java Plug-in 10.9.2.05 Using JRE version 1.7.0_09-b05 Java HotSpot(TM) Client VM User home directory = C:\Users\Patricia ---------------------------------------------------- c: clear console window f: finalize … |
| | 1. **Remove the words where last character is a capital letter from a given sentence.** |
 | I'm new here and I have an assignment about java that i'm not understand on how to do it.Here is the question: Write a test program that read an integer n and call a method to display a pattern as follows: 1 2 1 3 2 1 4 3 2 … |
| | i have to create a calculator (i'm a 12 year old) for the science fair. on textwrangler when i try to compile it :Expected end of line, etc. but found identifier. here is my code: import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.*; public class JavaCalculator extends JFrame { private … |
| | I am writing some code to read some information from a text file. The file is essentially three columns of numbers. The first columns are ints, the second are doubles, and the third is ints. So I have created a tokenizer that goes through line by line and interprets the … |
| | i got a problem to make a program where i should use arrays the problem is in the next part, even though all the for loops are the same in this array `results[4][5] = i; // problem here nothing gets stored` nothing gets stored, so when i run the program … |
 | Hi guys I need some help writing a program where I store information from a textfile into a parallel array. I need to be able to do a multiplication sum with the amount,and an if statement. Here is the textfile James 550 Quinton 410 Liam 120 Taylor 600 Jake 270 … |
| | Please can anyone help me with a simple sample on how to populate JCombobox with data(mysql etc) using Java persistence (JPA). I am quite new to this component so I desperately need help with this. |
| | Ideally my program should work like this... Upon button click a random message (out of 3 messages) is appended to a text area(or pane, etc). One message should display blue, one green and one red. Currently I am using JTextPane. I have figured out how to append text easily but … |
 | Hey I'm having trouble with a HW assignment, no need to give me the answer out right but any help would be appreciated! I'm just trying to search a linked list and find a node then delete it. Here is what I have so far: void deleteSong() { char deleteMe[sz]; … |
| | I need urgently your help. Anyone can help how to Write a Java GUI program that accepts three user inputs (use text fields) with three check boxes. The check boxes determine whether the area, circumference and/or the volume of a circle/sphere is/are calculated. If only one check box is selected, … |
| | I want to know if this is correct for what they are asking. If I try to put 7.5% in the `int=` spot it errors. I am a newbie who doesn't quite understand it all. The commission rate in the firstmethod will be entered as a decimal value (for example, … |
| | Write A Program With A Method Name PrintFactors That Accepts An Integer As Its Parameter And Uses Fencepost Loops To Print The Factors Of That Number Separated By The Word "and" |
| | Hi i gotta display 2 arrays on screen but they don't look good i was wondering how can i make it look like this: Speed 20 88 75 80 68 77 81 Focus 30 90 77 83 71 84 85 Jetta 40 94 80 85 76 91 90 Contour 50 … |
| | Hello Members, I have a program (from Deitel Java Solution Manual) which bounces a ball using a Java thread inside a JPanel(which is inside a JFrame). When I made a custom class for the ball, the program is not painting anything on the JPanel.I would appreciate any help. Following are … |
The End.