32,204 Topics
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| | I am new to programming, so please accept my apologies if this question is simple. I'm creating a program that generates a random maze depending on the starting point you enter. I did every thing but when I execute the program, it doesn't show the path to get out from … |
| | Hello so the code i need to write needs to read a text file and print as many random names as a user tells it to. so i have everything but cant figure out how assign a line of the file a number so i can just come up with …  |
| | I'm running a problem with install the junit to the computer. I already download the junit to my computer. But how do I install it? I try to google it, but I don't understand their instructions. I remember in the class, my teacher do a lot of copy and paste … |
| | hi all i have to implement arraylist<node> base tree(one parent may have more than two children). i did not work with node can you help me to create the tree |
| | I need to check whether the entered numbers are valid, if not output a message. this needs to be done with using exception handles. i have tried the following but does not work. i get the error : cannot invoke hasNextInt() on the primitive type int [CODE]input = in.nextInt(); if …  |
| | I want to write some text to JtextArea of class1 from class2 . How can i do that? Thanx in advance for any suggestion |
| | I am developing a dynamic page in that some text and images should be displayed together...! But before that i had tried to get nevigation page for whole application. In that i am getting same problem, Image is not displayed...! What i should write in src=" ????? " I have … |
 | I hope u havnt taken it filter in java :-), i want to create a filter for internet which do content filtering on some keyword, but dont know how to start , any body just an hint please..... Thank you |
| | For the program I have the user entering their current distance and bearing from specified point with the programme then returning the nearest station and bearing/distance to this station. However I also want to include what line the station is situated so I know the code will be something along … |
 | Hello, I'm working on a Moving Ball project and on the moving ball there are random number so i need to use the keyboard or the mouse to click on the number printed on the moving but i dont know how to go about it. here is the code below: … |
 | I am learning java through a book. After finishing each chapter, i work out problems given at end of each chapter . when i tried to solve a problem , i could not frame the logic exactly. Please help to solve following exercise : Write a program to find the …  |
 | Hi everyone, I'm trying to do exercise from the book I'm reading at the moment. But, I don't seem to have understood the last part of the question. I'd greatly appreciate anyone explaining the question to me. I have done all parts of the question except the last one which …  |
| | Can anyone suggest book for beginner In EJB 3.0 Like Head first (there is Head first Ejb but its 2.0). Any suggestions would be appreciated.  |
| | Admittedly I am only a beginner at playing with java but I'm pulling my hair out trying to understand something I thought would be easy, and it probably is. Trying to write code that randomly selects from 3 preloaded arrays and spits out the results. Mechanically the code seems to …  |
 | This program determines the grade average, raised grade average, of individual students and all students. The program takes scanner input. In the scanner, the number of students, the number of grades for each student, and the grades of each student are entered. Ultimately, I need to print out each student's …  |
| | hello everyone i was writing a program which is used to convert pdf to text.it is work fine when i am convertin a simple paragraph or table into text but it gives error while convert another file which is send by other and contains 1000 's of pages can you … |
| | I was just wondering why the constructor makes a call to the method toString() then I have realised that it's because of the method's name. And why is its name so unique? I changed the name but I don't get the same results. Anyone could possible explain this please? Thanks. … |
| | I have a grid of 225 JButtons in a 2d array of 15 x 15 I was windering do i need 225 if (event.equals (Grid[0][1])) { } or is their a loops or something, thanks in advance |
| | hi. i'm trying to make a program that will connect two points that i click in my JPanel. i'm trying to connect the two points with a line. i displayed the values of my (x1, y1) and (x2,y2) coordinates whenever i click using the mouse and there is no error … |
| | Ok, so I've imported import java.util.Random; and im trying to get a random number between 1 and 2, 1 and 4,and also 1 and 15, how would i acomplish this, i know how to generate random numbers, but not between 2 certain numbers?, how can this be accomplished? |
| | Hi, I wonder of you can help me please, I'm new here and looking for an answer to a problem with my Java files. 'Problem' is: When I try to open the 'Java' icon on the 'controll panel' page, it says 'Application not found' !? I have tried re-installing Java … |
 | So, I wrote the following program to connect to my local mysql server and create a table in the existing "test" database. The program compiled without any errors, but I got the following run-time error: java.sql.SQLException: Cannot connect to MySQL server on localhost:3306. Is there a MySQL server running on … |
| | hello everyone, I am new to java programming and i am currently studying inheritance. I have following program and i am getting error [COLOR="Red"]"cannot find symbol"[/COLOR] .Please help me.Thanks in advance. [CODE]class Box { double width; double height; double depth; Box() { //default constructor width = 0; height = 0; … |
| | eg. 14 and 15 Find all the factors of 14 and 15. 1,2,7,14 are factors of 14 1,3,5,15 are factors of 15 Sum all the factors of two numbers and if sum of factors of two numbers taken are respectively equal they are Amicable numbers. |
| | Hi I've made a cube in Javafx 2.0, see [URL="http://www.colin-java.co.uk/pics/ftcfx.png"]http://www.colin-java.co.uk/pics/ftcfx.png[/URL] But as everyone can see, the edges of the shapes / image are horrendous. This is even with smooth set to true, but it appears to do nothing. Setting it to false seems to make no difference. I've tried googling … |
| | Hi everyone, I have a javascript, jQuery, and c++ background so im not completely new but am just starting to learn Java in a University setting. In our first program we are to run it within a Do...While loop so the user can click a JButton for yes or no, … |
| | hi i am trying to create a dvd rental system, up till now i have entered the client's details into an array list and have created a loan for every client that rented a dvd. But now i need to edit a part of this loan, for eg i need … |
| | I'm using Swing's GeneralPath to create complex shapes and fill them. Usually I do this, and it creates a nice hexagon for me: [CODE] path.moveTo(100, 100); path.lineTo(150, 100); path.lineTo(180, 150); path.lineTo(150, 200); path.lineTo(100, 200); path.lineTo(70, 150); path.lineTo(100, 100); g2.draw(path);[/CODE] Suppose I wanted to create a donut-shaped GeneralPath, and do this: … |
| | Hi, first of all, sorry for my english, but I´m having a problem and I can´t resolve it. This is part of my jsp code: [CODE]<% if( session.getAttribute("usuario") == null ) response.sendRedirect("index.jsp"); ArrayList pacientes = new ArrayList(); String mensaje=""; String dni="", nombre="", apellido="", email="", sexo="", telefono="", fechanacimiento="", obrasocial="", codigo=""; String … |
| | i) My Table contains no of columns and a jcheckbox i the last column. ii) I am using a combobox to select certain value. iii) based on the value of combo box the jbutton loads the data into the table. iv) when i [B]reload[/B] the data into the table, the … |
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