I've almost finished building an Editor in Java, but i'm a bit stuck on creating a JCheckBox that saves your credentials (as in password only) . I would like it to be on a JPanel under the password input box and above the Login and Register buttons.
Code: Login.java (Main class for this problem)
[URL] ....
The main thing here is using GridLayout, which is what im currently working with but can't seem to get it under the password input box.. check: [URL] ....
How can I make the JTextField to popout when a JCheckBox is selected? I tried putting it under the general if statement and under the if statement which is inside the general if statement.
I would like to put the answer of JCheckBox inside of a JTextArea. How to call the answer of JCheckBox if its check the response should be Yes if its unchecked the response should be No, and the yes/no answer should be appear inside JTextArea. But my problem is inside the JTextArea the answer from a JTextField and JComboBox is also there, and they should be appear in a parallel. I attached the physical appearance of the GUI.
I'm displaying a table with several read-only pieces of data, and a checkbox field that toggles the row color. The background color for the checkbox is not toggling correctly. I put together a SSCCE:
If I comment out the Nimbus look and feel, it works as expected. I googled this problem and found one possible solution on Stack Overflow. Their suggestion is:It's a bug in the synth-installed renderer, quick hack is to force the rendering checkbox opacity to true: ((JComponent) table. get Default Renderer(Boolean.class)).setOpaque(true);
I tried using this line and setting the opacity to true, but it renders the background white. I'm using Java 1.7.0_25.
I would like to get a checkbox within a table to fire an event when it's clicked rather. I gave tried putting in a TableModelListener but the the event only seems to trigger when I click on another column (as if the table is waiting to see if I will change my mind) before moving on.
I have also looked at the setValue of the TableModel itself.
Do I need to put an ActionListener on each checkbox or have I missed something ?
There are 8 JCheckboxes, which are already added to panel and aligned in group layout. From which, I have selected one JCheckbox. Then the resultant GUI should contain only remaining 7 JCheckboxes and selected one should temporarily removed or hide from GUI . Is it possible? If so, how?
<html> <body> <!-- Here I am going to use scripting like scriptlet,expression and other element like jsp declaration element --> <%!int i=0;%> <%System.out.println("Scriptlet");%> <%=new String("Expression")%> </body> </html>
I have a piece of code for an applet that I want to run as the main applet code, and I want it to loop until a boolean is true, but it needs to paint while the code is looping. Here is the relevant part of my code ....
Please enter 1 if your package is a letter and 2 if your package is a box 2 Please enter weight in pounds (Example: 1.2): 1.2 Please enter your shipping service option: Press 1 for Next Day Priority: Press 2 for Next Day Standard: Press 3 for Two Day Shipping: 1 7.00
If I comment out the else statement on the last line of code I get the following output:
Please enter 1 if your package is a letter and 2 if your package is a box 2 Please enter weight in pounds (Example: 1.2): 1.2 Please enter your shipping service option: Press 1 for Next Day Priority: Press 2 for Next Day Standard: Press 3 for Two Day Shipping: 1 13.75
What I want to happen is the code under the first comment to to execute if true, or go to the code under the next comments and execute if that statement is true and if that is not true I want the last block of code to execute underneath the last comments.
I have the code and it works very well, but my professor wants us to use Junit testing to test our code. I've never used JUnit before, how it works. Is it possible to have a boolean value (true or false) randomly set?
Here is the code I need to test:
package musicalinstruments; class MusicalInstrument { public String name; public boolean isPlaying; public boolean isTuned; public MusicalInstrument(){ isPlaying = false; isTuned = false;
So, I don't know how to start off this program. I'm not looking for the final answer, but I don't know two things: 1. the objective, 2. what type of thing do I start it off with? A method? I'm pretty sure it's not a class right because it already has a class?
public class WebFarm { private ArrayList<Server> servers; /* constructors and other methods and instance variables not shown */ } public class Server
[Code] ....
the Instructions:
The ping() method of the Server class returns true if the server is currently functioning normally; otherwise it returns false. Write a definition for the needsAttention() method of WebFarm that returns an ArrayList containing the servers that are not functioning normally:
public ArrayList<Server> needsAttention() { //I can put code here }
Create an application that generates a quiz. Prompt for the user's first and last name, college major, and confidence in test taking (high, medium, or low). The quiz should contain at least five true/false questions about horticulture. When the user selects the correct answer, a message of positive reinforcement should be displayed. If the user selects the incorrect answer, the correct answer should be displayed with a message of constructive criticism. At the end of the quiz, display the number of correct and incorrect answers as well as the percentage of correct responses for each user.
import java.util.Scanner; class HorticultureQuiz { public static void main(String[] args){
I'm supposed to take this truth table and alter it so it displays 1's and 0's instead of true false. I'm assumed to do this I would just need to change the variable type and replace true and false with 1 and 0 but every way I try this does not work.
//a truth table for the logical operators.
class LogicalOpTable { public static void main(String args[]) { boolean p, q; System.out.println("P Q AND OR XOR NOT"); p = true; q = true; System.out.print(p + " " + q +" ");
I'm trying to create a program that has two labels... one in the top left and one in the top right... so far when i run it only the one in the top right (label2) shows... also In the program there will be multiple button and when I click a button it will show a different panel and then i can go back to the first panel to select other panels... so far i haven't figured out how to make panels visibility go false/true with actionlistener. last thing... when i have more then one panel added to the frame none of them show up.
Java Code:
//Matthew import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Test{ public static void main(String[] args){
Assignment: Given an array of scores sorted in increasing order, return true if the array contains 3 adjacent scores that differ from each other by at most 2, such as with {3, 4, 5} or {3, 5, 5}.
public boolean scoresClump(int[] scores) { for (int i = 0; i < scores.length; i++) { int a = scores[i]; int b = scores[i + 1]; int c = scores[i + 2]; if (Math.abs(b-a) + Math.abs (c-b) <=2) return true; } return false; }
I got it right for some of the input, but not one of them. I tried to use the for loop and if statement on a specific input that I got wrong:
I suspect it has something to do with the for loop, but I don't see the problem with it. It should work, shouldn't it? But anyway, here is the error for {4,5,8} :
import java.util.Scanner; public class AdditionQuiz { public static void main (String[] args){
//Generate random two integers using utility System.currentTimeMillis int n1 = (int)(System.currentTimeMillis() % 10); int n2 = (int)(System.currentTimeMillis() / 7 % 10);
[Code] ....
however the true/false result can not be printed due to the "answer" variable...
In my code where the Button Action Performed is created, I have done the following to ensure that the visibility of the JTable and JScrollPane have been set to true. But it does not work?
