32,199 Topics
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| | I am missing something in my check sub class and I can't figure it out I know its something simple and I for the life of me can not find it. package lab61; public class AccountClass { public double annualInterestRate; public double balance; public int Id; public java.util.Date dateCreated= new … |
| | everything is working fine except Encryption button. import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JTextField; public class encryption extends JPanel implements ActionListener { char [] str= {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z' }; char [] str1={'1','2','3','4','5','6','7','8','9','0','!','@','#','$','%','^','&','*','(','_','_','+','=',',','.','?'}; char [] a= new char [50]; char [] b= new char …  |
| | How will I create a program that compute your final grade and file which contain prelim, midterm, pre final and final grade.Create another file that contain weight for each term.(prelim=20%, midterm=20%, prefinal=20% and final=40%) |
 | i am getting this error when trying to run projects 'javac' is not recognized as an internal or external command, operable program or batch file how can i fix this |
| | I am new to Java language. I have been taken some personal tutorials, reading on my own and practicing by writing and solving exercise in the book I am using. Below is an exercise I am trying to solve. Question. (Find the Smallest Value) Write an application that finds the … |
| | Can anyone help me how to pick all the files(many files) of some particular extention(.csv) and transferring it to remote server using Jsch channel. Please help. Regards |
| | Hi, I just wanted to know about instance method? If static modifier is not applied before does it makes it an instance method ? Plz give an example Thanku  |
| | I am trying to make a program for my AP Computer Science A Class. I wrote the following code that is supposed to allow a user to enter two numbers and then have them guess a number inbetween that number range. So far, it works 90% of the time, but … |
| | Trying to change this C++ to Java //The following pseudocode describes how to extract the dollars and cents from a //price given as a floating - point value.For example, a price 2.95 yields values 2 and 95 //for the dollars and cents. //Assign the price to an integer variable dollars. … |
| | I need to get the size of a file, but I keep on getting 0 as the size, which is not the actual size. private void dodAlgorithm() throws IOException { int count; int randomValue; long fileSize; File file = new File(filename); BufferedWriter writer = new BufferedWriter(new FileWriter(file)); SecureRandom random = … |
| | hey all I have a program to write and I need to use the JOptionPane dialog box to use JOptionPane to say Yes_No_Option, all I would like to know what is the code to be used , how does it work and will it work in a program. |
| | hie, new to daniweb my name is christel my interests are user interface design, javascript, ajax, node.js & JSP. looking forward to putting a few java certifications under my belt this year here is my hellow world in java public class HelloWorld { public static void main(String[] args) { System.out.println("Hello, … |
 | I have a JTable that a user can input data. I have an image that I would want to put at the top of my page when printed and also another image that I would want to work as footer. How do I print these on the same page including … |
 | Hi Dw I have a multi-threaded server that connects thousands of clients. The clients sends in data that the server must write to a text file. As there are a thousands of clients sending in data the server has about 60 texts files but the data sent by the client … |
| | hi i need the answer of :- write any 3 java programs, but their is no java programs in the computer |
| | Java swing component jtabbedpane is opaque even after jtabbedpane.setBackground(new Color(0,0,0,0)); or jtabbedpane.setBackgroundAt(index,new Color(0,0,0,0)); |
| | trying for the longest while to get this program to run at least properly, havent finished entering all of the codes as, just testing each part of the statement before i add in the rest of the codes the program is not working properly dont know where I have gone … |
 | Every time I try to compile this code I get the same error but it doesnt seem to make any sense. This is the code: public class Software Development { public static void main(String[]args) { System.out.println("Hello World"); System.out.println("2name"); System.out.println("name: \n"+name); System.out.println("\"name:\""+name); } } And this is the error: Software Development.java:1: … |
| | I am currently working on a program that asks a student to answer 5 simple maths questions after each question it will state whether the answer is right or not. which it will out put a grade and grade average percentage. Currently I'm stuck on the if statement where it … |
| | package deviation; import java.util.Scanner; public class Deviation { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.println("Enter n: "); int n = input.nextInt(); System.out.println("Enter " + n + " numbers: "); double[] x = new double[n]; int i; for (i = 0; i<n; i++) { x[i] = … |
| | Sorry for the misleading question guys, I know how to generate two random numbers but I want to use them in One JOptionPane input Dialogbox so the user can add the two numbers. Below is my code of what I have done so far I know it's not a lot … |
| | hi all i am doing a programing and got stuck on two condition. here is the code that I have done so far. it is as far as i reach. for(int i=1; i<=3; i++){ System.out.println("please enter the employee id number"); emp_idnum = input.nextInt(); System.out.println("please enter the employee first name"); empfirst_name … |
| | Hello, Thank you for your time! I am trying to understand the Quick Sort algorithm. I have some questions about the partition method. I found the following implementation online: import java.util.Scanner; public class QuickSorts { public static int partition(int a[], int left, int right, int size) { int pivot = … |
| | At my work we have an internal webite that only uses Java 6. 7 and up will crash the site locally. I am aware that it really needs to be update for many reason. Does any one know of a way to launch IE to use an older version of … |
| | I have a JTable that has four columns. In the second column I have assigned a JComboBox to be the cell editor of my column.The problem that I encountered is that I cannot handle the combobox the way I want. **What I want is that after a user select an … |
| | Hello I am new to Java & I am trying to find ways(in built Java objects/ways) to parse HTML. Can you suggest some objects in the Java Standard Library? I have extended the object HTMLEditorKit.ParserCallback but when parsing a web pages' source code it literally takes 2 minutes or more! …  |
| | here is my code and i have tokenized the data in my .txt file.I want to insert them into a database. import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; import java.util.StringTokenizer; public class test1 { public static void main(String[] args) { BufferedReader br = null; try { String sCurrentLine; br = new … |
| | <html><head></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">import java.text.DecimalFormat; import java.util.Scanner; public class BookBillSystem { public static void main(String[] args) { //create the Scanner instance for taking input from console Scanner scanner = new Scanner(System.in); //take input customer name System.out.print("Customer Name: "); String customerName = scanner.nextLine(); //take input noOfBooks purchased System.out.print("No of books … |
| | When I try to type in a set user to add to the friends list, it shows up blank via [[]]. I know I'm missing something or it's the way I set up the input, but I can't figure it out. Main Driver import java.util.*; public class main { public … |
| | I want to ask >>what is the use of (string args[])??? and how can I use system.exit >>without intially import the package (java.lang) ? thanks ^^ import javax.swing.JoptionPane; public welcome1 { public static void main (stirng args[]){ JoptionPane.showMessageDialoge(null,"welcome to java"); system.exit(0); } } |
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