How To Get One JButton To Perform Sequential Actions
Aug 18, 2014
How to get my program to display a piece of text (upside down) on the first button press, and then display it right-side up on the second button press. I've looked all over the internet and I can't seem to find a example that fits my situation.
Here is the code:
package org.CIS407.Lab10;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class JUpsideDown extends JFrame
implements ActionListener
Righto, so I've crafted a binary search and a sequential search. The sequential search works perfectly fine.
However; my binary search doesn't. If I enter in incorrect data, it tells me the data I entered was incorrect. But if I enter in correct data, my sequential search tells me my datas correct, but binary search tells me I'm still incorrect. Here's my binary search + the test program.
I am trying to have a Jbutton (blocker02) act like a wall that will not allow a moving Jbutton to pass through. I tried using " if (blocker02. getBounds (). intersects(r_wall)) but it hasn't been successful.
I need to write a program that, when a button is pressed, will add the user input to a table AND write it to a sequential data file. I have everything done accept for how to write the data sequentially(all input data on the same line in the file). The following is part of the code:
private void submitButtonActionPerformed(java.awt.event.ActionEvent evt) { DefaultTableModel dtm = (DefaultTableModel)jTable1.getModel(); dtm.addRow(new Object[]{donorName.getText(),charityName.getText(),donationAmmount.getText()}); //Adds user input to the table try { FileWriter writer = new FileWriter("FundraisingInformation.txt",true);//Creates file or adds to it BufferedWriter bw = new BufferedWriter(writer);
[code].....
I would need the file output to be in the following format:
donorName charityName donationAmmount
As I said, using the .write(bw) i know how to make it look like:
Reading a sequential flat file (which is working) but now I need to add code to update the status flag (setting it to ‘Y’ position(7,1)) before I close the file and not sure how without defining the fields.
I just trying to find the most efficient way to do this. I read in a csv file into a linked list and then I split the linked list into sections based on category for each element. Of course I used an array to split each element of the list. However I can do the sequential search by either ID and Name by using hashmap and making the key = name + ID and then doing key.contains(charSequence);. However I feel like this is inefficient and I would like to use the linked list instead of a hashmap which could be done by splitting the user input and used for method overloading by passing an int in one and a string in another. I feel like this approach is a little more redundant and maybe their is a better approach for searching for id and name. Below is an example of the elements in a linked list.
note: their are more elements than this.
element 1
name: George address: 4410 something dr. phone number: 978-888-6666 id: 43
element 2
name: Karla address: 339 something dr. phone number: 334-338-6556 id: 23
My professor like us to make a salary, taxes and etc exercise. which we should type the name first then, input salary. then if we input the amount 8000 or higher. the system will ask another question about the marital status. and that is it.
My real problem is when we input 5000-7999 the system should ask a different question, stating do you want to pay for your premiums and a follow up of yes and no choices. if we input 0-4999 the system will just state that it is your current salary.... etc..
package exer5; import java.util.Scanner; public class Exer5 { public static void main(String[] args) { Scanner Kirk = new Scanner (System.in);
I'm trying to modify an existing code and I'm having trouble with it. I want to add two things to a java Sudoku menu. I added JMenu 5 and JMenu 6 but now I have to make them work. When the user clicks on "Aide" and then "Reglements", I need to have an image that pops and that disappear when the user clicks on it.
I have two dialogues: one name "dialog" and another named "queryDialog". Each dialog has one button among other things and they are supposed to make their respective dialogues hide when clicked. But the second button doesn't work.Here is my code:
I tried to follow the example of How to add multiple ActionListeners for multiple buttons in Java Swing - Stack Overflow but there seems to be a problem.
I have spent quite a few hours trying to follow an API on how to use Actions in a java program.
I have 3 JButtons and have just added a JMenu. What I want to do is to add an ACTION so that the JMenu performs the same function as the JButtons. (i.e. they both do the same thing).
I have tried to copy and follow the example from the API forum.
How to Use Actions (The Java > Tutorials > Creating a GUI With JFC/Swing > Using Other Swing Features)
The first error I get in compiling is on the following line:
Action loadFile = new LOADFILE();
However, I get the following error message:
softeng2final2.java:49: cannot find symbol symbol : class LOADFILE location: class softeng2final2 Action loadFile = new LOADFILE();
I have read that when two threads have two steps (of execution) and each step involves many operations, then the operations of both the threads kind of overlap one-another. For example
I think I am not very clear about interleaving actions/operations? Especially when we say that atomic actions can not be interleaved. But
Java Code:
class Counter{ private int c=0; void increment () { c++; } void readIn () {
[Code] ....
And the following sequence of events occurs.
Thread A: Retrieve cThread A: Increment cThread A: Store the result in cThread B: Ask the user to enter a valueThread B: Read in the value, store it in c
Now the value of c obtained after increment will be lost (Thread Interference). Isn't this an example of interleaving operations?
I was tasked to do a 2-4 player network card game. Before I jumped into doing the card game. I decided to try out an a simple program which is the clients taking turns to type in their textfield.
I have a server that listens to 3 incoming client connections. once all 3 clients is being connected,
Steps
1) The first client will send the message first while the second and third client will wait for the first client to finish sending.
2) After the first client finished sending the message, it will be second client turn to send the message and the third client will wait for the second client to send finish.
3) After the third client finished sending the message, it will be third client turn to send the message and the first client will wait for the third client to send finish and (go back to step 1))
**The first client can only start typing once all 3 clients is being connected**
In my server class,I spawn a new Thread once a client is connected, I do a wait() on each time the client is being connected, I stored the thread in a arraylist as well. I have an id to keep track how many clients is currently connected. once the id reaches 3, I used notifyall() to notify all the threads and set the first position of my arraylist as my currentThread so that I can keep track which is the currentThread running.
I started 3 clients. and I typed the textfield of the first client but my server isn't receiving any messages.
class Server implements Runnable { private List<SpawnNewThread> sntList = new ArrayList<SpawnNewThread>(); private SpawnNewThread currentThread; private int id = 0;
- The Instance Text box and SAVE button should be disabled. When the pop up appears. - The Instance Text BOX gets enabled only when any selection happenes in COMBO Box - The SAVE button gets enabled only when COMBO BOX and INSTANCE TEXT BOX is filled. - Let the CANCEL button be enabled always.
I'd like to change the text on the two buttons which I have in my Dialog Box, how should I do this?
Also, when I click the X Button in the top right of the Dialog Box, nothing happens, and the program only stops when I end it in jGrasp. How do I make this button close the program when clicked on?
import javax.swing.*; import java.util.Random; public class SwingInputExample { public static void main(String args[]) {
Write a program that uses a while loop to perform the following steps: Comment by labelling each part: //Part A, //Part B, etc...
A.)Prompt the user to input 2 integers: firstNum and secondNum. Use 10 and 20. B.)Output all odd numbers between firstNum and secondNum. C.)Output the sum of all even numbers between firstNum and secondNum. D.)Output the numbers and their square between 1 and 10. E.)Output the sum of the square of odd numbers between firstNum and secondNum. F.)Output all uppercase letters.
Again I am new to while loops and I am totally lost. I have just completed 8 other programs using if else statements and now trying to get the hang of loops.
import java.util.Scanner; public class whileLoop { public static void main(String[] args)
I am doing a calculator using stacks but when i try to calculate I getting the wrong data example stack contains 8 and user enter -3 stack should change to 5.
This has three different classes in a package and the program itself is supposed to read and perform operations obtained from a txt file. However, I'm not even sure how to get it to perform the operations from the text file. I know that it can read the file as I was able to get the program to print the text found in the file when I ran the program with a test print to make sure that all content was being read. However, I am clueless when it comes to how to get the program to look at the text as commands.
Here is the piece of code that I am not sure where to go from as far as telling the program to read the text and perform the tasks listed.
public static void doTVoperations(){ File operations = new File("operations.txt"); if(operations.exists()) try{ Scanner n = new Scanner(operations);
public static void main(String[] args) { boolean t=false; long cuTime = System.currentTimeMillis() while(t==false) { System.out.println(cuTime); long g=cuTime+2000;
[Code] ....
I tried this and it includes a while loop as the whole program has to wait until this while loop executes. So the entire program slows down. Is there any way to do this without a while loop
public static void main(String[] args) { boolean t=false; long cuTime = System.currentTimeMillis(); while(t==false) { System.out.println(cuTime); long g=cuTime+2000;
[Code] ....
I tried this and it includes a while loop. therefor the whole program has to wait until this while loop executes. So the entire program slows down. Is there any way to do this without a while loop...
I am able to perform column operation but not able to perform row operation because i am not able to store data say a 2 matrix [][]. I need to store the data into a 2-D matrix. Here is my code:
Java Code:
import java.awt.List; import java.io.BufferedReader; import java.io.FileReader; import java.util.ArrayList; import java.util.Scanner; public class colRowRead {
I need to know how to automate a web browser (either Chrome, Firefox or Safari) to perform the following task.
Take a word from a .txt file housed on my hard drive,
1) put it into a search engine, 2) load the results, 3) click on/ open the first result, 4) open up an new tab and perform steps 1-3 again but with the next word from the .txt file. 4-5 second pauses are needed in between each step.
Additionally, I would like to automate the browser to close all the open tabs when a full stop is pulled from the .txt file.
