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Not an ArrayList. An Array. For some reason, my teacher (or rather, the lesson plan we are using) requires that we make a program that takes an array of integers and removes all the zeroes. So far I have: [CODE] public void remove(int index) { for(int i = index; i …

Please any one can guide me how to write a [B] mysql database search[/B][I] in java....[/I] I want to search mysql database for some data in keywords. please help... thnakx

Hey Guys, This is my first program where I have used JLabel and JText. Im trying to create a program that will solve a simple quadratic equation. I have the program to the point where it will solve the equation, I just cant get it to display in the window. …

HOw can i assign a default action of Enter key after cell of jtable is edited to a Button???

I use a book to learn Java ,and this book contains making a difference question in each end of the chapters. I finished chapter 5, which is all about if and switch statements and operands such as bitwise and logical and loops. Now, it asks me to create a quiz …

I have problems with adding images to JFrame java application. Now I am using Eclipse IDE. Below is the code that no images is shown. import java.awt.BorderLayout; import javax.swing.ImageIcon; import javax.swing.JLabel; import javax.swing.JFrame; public class LabelDemo { public static void main(String[] args) { JLabel northLabel = new JLabel("North"); ImageIcon labelIcon …

I am developing an java application for for login autentication form, I have pre saved username and password in my database. When admin enter his credetials, it validates to my DB and gives access to actual application Now, my application is used by admin and database is managed by DBA. …

Hey guys, I'm trying to develop a simple tool. I'm having but I'm having trouble accessing some swing components. My gui basically has a jtabbed pane with two, jbuttons beneath it. Each tab is identical except for the title, it has a jtextarea and two jbuttons. These buttons perform an …

So basically I have created a linked list which allows me to enter numerical data into a list and for it to be sorted, added to and deleted but I need to add text into the list as well but not sure how to go about it I've tried changing …

Hi techies got a small problem a swin related one... I found a similar article here [Click Here](http://www.daniweb.com/software-development/java/threads/89427/how-to-programatically-select-a-cell-in-a-jtree) But seems no answer for that in that particular thread in this forum. Since that is a very old thread thought it would be right to put in my question as a …

Hi folks, I'm new here and looking for a simple but educational&interesting idea for my CS project. It's my first year and we'll work in teams, so it should not be too difficult to handle, but also not so simple. I'm waiting for your suggestions.

Hello, I am trying to create this ascii art using nested for loops, [CODE] ***** ////////// ***** **** ////////\\ **** *** //////\\\\ *** ** ////\\\\\\ ** * //\\\\\\\\ * \\\\\\\\\\ [/CODE] I tried doing a paper check and this is what I have so far... [CODE] * / \ * …

Hi; This is a code that I got from the examples in Oracle in using the javax.print When i try to compile and run a get an error saying javax.print.PrintException: java.lang.IllegalArgumentException: URI is not hierarchical [CODE]package printtry; /* * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved. * * This …

Hi All; Im just making a simple Desktop app. Ive got a need so that the user could be able to add data to the table dynamically. Ive done implementing the table and also code for adding rows. Issue is after i add the row it is not displayng in …

public static void main(String[] args) { World earth = new World(); Turtle t1 = new Turtle(earth); t1.penUp(); t1.moveTo(50,50); t1.penDown(); t1.setPenWidth(5); t1.drawLetterN(5.0); t1.penUp(); t1.moveTo(500,400); t1.penDown(); t1.setPenWidth(3); t1.drawLetterN(2.0); t1.penUp(); t1.moveTo(330,50); t1.penDown(); t1.setPenWidth(15); t1.drawLetterN(15.0); t1.penUp(); t1.moveTo(250,240); t1.penDown(); t1.setPenWidth(8); t1.drawLetterN(7.0); t1.penUp(); t1.moveTo(10,350); t1.penDown(); t1.setPenWidth(10); t1.drawLetterN(10.0); } public void drawLetterN (double scale) { System.out.println("drawLetterN was …

I need to know how to create methods to compare two sets of singly linked lists. The only problem is that I can't put a linkedlist inside the method parameters. Please help [CODE]import java.util.*; public class SLinkedList { protected Node head; // head node of the list protected Node tail; …

I need help!!! im trying to get my sentinal to stop counting as my last value passed. Im imputting a value for a house,and its calculating a total price based on interest and stuff ive set up according to the house value. then pressing -1 to go onto the next …

I am having problems with this line of code: --System.out.println(line +"is ranked at" + location + " in popularity amoung girls with" + model.getFrequencyListName(location));-- what it is telling me is that I need an int method for getFrequencyListName, and I have have one but it is for an array. Obviously …

Hi guys i am having this exception [I][I]Initial SessionFactory creation failed.org.hibernate.MappingException: Foreign key (FKF5B10F06F8C1E633:detalle_pedidos [pedido_id])) must have same number of columns as the referenced primary key (pedidos [pedido_id,cliente_id,empleado_id]) Exception in thread "main" java.lang.ExceptionInInitializerError[/I][/I] according to this my table pedidos mismatch detalle_pedidos here pedidos pojo [CODE]import java.math.BigDecimal; import java.util.Date; import java.util.HashSet; …

Hi, I'm having an issue with the following directions: public static int aPower(int a) Given a number a > 1, Returns a number n such that for some m > 1 we have a = n ^ m. If no such n exists it returns 0 public static int aPowerOf2(int …

[CODE]import static java.lang.System.*; public class ShipTester { public static void main (String []args) { Ship s1 = new Ship(); s1.setX(3); s1.setY(10); s1.setSPeed(22); out.println(s1.getX()); out.println(s1.getY()); out.println(s1.getSpeed()); out.println(s1);//calls the ToString method Ship s2 = new Ship (3,10, 22); ship s3 = new Ship(5,7 ); s3.setSpeed(19); out.println(s1.equals(s2));//s2 becomes rhs out.println(s1.equals(s3));//s3 becomes rhs } …

Hey guys, I am making A Vending Machine Program and seem to be getting error's when trying to do things outside a class and stops the Program. (Vending machine should keep looping until Quit is typed, and it will display a summary of money and cans left. [CODE] ******SODA MACHINE …

I have this code i compile it and it ran but nothing came up can someone help with this? [code]import java.util.Arrays; import java.util.Comparator; import java.awt.BorderLayout; import java.awt.FlowLayout; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.text.DecimalFormat; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import …

Hello everyone, I need some help understanding some concepts and possibly with my logic on this problem. We are supposed to create a program that asks users for their name, id, and grade average. The set is supposed to be where the exception is thrown. When the user enters their …

Here is the assignment criteria : Implement exception handling to validate user input as was described in class. You need to at least catch type mismatch exception. No late or by emailed homework will be accepted. We are to have a student enter their name, id and grade. The name …

Hi, I am a beginner so bear with me. I have an assignment in which I have to create an array with numbers and then have a loop with condition to check in which order the user has inputed the numbers. Asc=1, desc=-1, other=0. This loop isn't working, i know …

Hi, I'm trying to have a set of random numbers into ArrayList and to print it. e.g. if the total number is 10, [2,3,5] or [1,5,2,2], etc. In below, it gives me each numbers but because y gets zero, it throws an exception. Can I have help to print all …

I am doing Gui's on Netbeans and am writing a program that sells flower ornaments and such. I have everything added to an arraylist. But when it comes to showing, I am on another tab and need to pass the arraylist to that method for display, any help? Link me …

[CODE]public class cation { public static void main(String[] args) { new cation().run(); } public void run(){ harada hara=new harada(); insert(hara); insert(hara); } public void insert(harada hara){ if(hara.left==null){ hara.left=new harada(); } else{ insert(hara.left); } } class harada{ harada left; public harada(){} } } [/CODE] Can someone please explain, recursion in objects …

I am a first time user to Java and I am stuck and cant figure out what to do.. Please help. My code is [code] import java.util.Scanner; public class rshomework2 { public static void main ( String[] args) { Scanner input = new Scanner(System.in); sales; final double base = 800; …