How To Use Actions In Java Program
Apr 18, 2010
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();
[Code] .....
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Dec 22, 2014
I have started to create a calculator using Java SWING. I am new to this and don't know a huge amount. I don't know what to do now.
How do I add actions to the buttons? So when the button is pressed it will appear in the text area?
Where do I put these commands also? Within public void gui?
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
lic class Calc extends JFrame implements ActionListener {
private JButton ZeroButton = new JButton("0");
private JButton OneButton = new JButton("1");
[code]....
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Mar 18, 2014
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);
[code]....
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Dec 17, 2014
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.
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
[Code] .....
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Feb 2, 2014
When I add an array of action-objects (the class extends AbstractAction)
to a combo box, I do receive the action performed events, great!
But the combo box items show the long string of the action object, of course!
How to render that string in a way that only the Action.NAME appears?
I was experimenting a little, but could not make it to work:
Java Code: private class ComboRenderer2 extends BasicComboBoxRenderer {
@Override
public Component getListCellRendererComponent(JList list,
[Code]....
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Jul 19, 2014
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:
Java Code:
import java.io.*;
import java.util.*;
import java.util.concurrent.TimeUnit;
import com.sun.management.OperatingSystemMXBean;
import java.lang.management.ManagementFactory;
import java.lang.System;
[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.
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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
[Code] ....
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Mar 24, 2014
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?
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Aug 30, 2014
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;
[Code].....
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Apr 24, 2014
This is my modalPanel code:
<rich:modalPanel id="createManagedObject" moveable="false" autosized="true" width="500" rendered="true" domElementAttachment="form">
<f:facet name="header">
<h:panelGroup>
<h:outputText value="Create Managed Object"></h:outputText>
</h:panelGroup>
</f:facet>
<f:facet name="controls">
<h:outputLink onclick="#{rich:component('createManagedObject')}.hide(); return false;">
[Code] ....
As shown in the above code:
I have following components in ModalPanel:
1) ComboBox
2) Instance
3) Save and Cancel
I wanted some validation here :
For example:
- 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.
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Oct 20, 2014
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[]) {
[Code] .....
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Apr 16, 2014
Have written a program to open Excel sheet from java program.Below line works fine.
Process p = Runtime.getRuntime().exec(new String[]{""C:Program Files (x86)Microsoft OfficeOffice12Excel.EXE"","C:UsersRASHPA~ 1.ORAAppDataLocalTempExport_xl420314062726 9379706.xls"});
But below code gives error i.e. Executable name has embedded quote, split the arguments
String path = "C:Program Files (x86)Microsoft OfficeOffice12Excel.EXE";
String file = "C:UsersRASHPA~1.ORAAppDataLocalTempEx port_xl4203140627269379706.xls";
Process p = Runtime.getRuntime().exec(new String[]{"""+path+""" + ","+file});
I am using java 1.6.
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Feb 20, 2014
I'm creating a program that will compile and run another java program:Lets say I have a program in directory
D:HelloWorldsrc
and compiled program will be in
D:HelloWorldin
inside src and bin is a folder hello (that's a package)
package hello;
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello World");
System.out.println("Hello World");
}
}
This program will be run by another program (that's the program that I am creating).Here is the code of my program:
package runnercompiler;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
public final class RunnerCompiler {
[code]....
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Oct 24, 2014
I want to develop a Java program that uses OpenScript APIs to test my applications. The OpenScript framework automatically creates the Java Code so I was thinking of either using this code or create my own using the APIs.
I tried both options using NetBeans but I'm getting errors everywhere starting with the library import. I'm pretty new to Java so I'm sure I'm missing a lot of things here. I pasted the code below from the OpenScript framework that want to use in a stand-alone file for your reference.,
import oracle.oats.scripting.modules.basic.api.*;
import oracle.oats.scripting.modules.browser.api.*;
import oracle.oats.scripting.modules.functionalTest.api.*;
import oracle.oats.scripting.modules.utilities.api.*;
import oracle.oats.scripting.modules.utilities.api.sql.*;
[Code] ....
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Dec 22, 2014
How to send sms to mobile using java program. I have tried lot of examples, I didn't get perfect example ?
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Jan 30, 2014
I want to develop an simple application using java for a simple porgram for the addition of two numbers.
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Jun 26, 2014
How to find if JVM is 32 or 64 bit from Java program....
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Jan 18, 2015
I have to read two pair of words as array from keyboard and then check corresponding words are anagram are not. If they are print 1 otherwise 0. Total number of words in the pair cannot exceed 100, the word length cannot exceed 100 and only lower case letters are allowed.My code is the following:
import java.util.Scanner;
import java.util.Arrays;
class MyClass {
public static void main(String[] args) {
[code]....
How can I improve the code?
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Oct 24, 2014
I'm new to this so take it easy on my code!! It compiles but its not giving me the correct outputs and I can't figure out why. Two words or phrases in English are anagrams if their letters (and only their letters), rearranged, are the same. We assume that upper and lower case are indistinguishable, and punctuation and spaces don't count. Some examples and non-examples:
* The eyes / they see (yes)
* moo / mo (no)
* Clint Eastwood / Old west Action! (yes)
* Dormitory / Dirty Room (yes)
For more examples, see here.
Your job for this assignment is to solve a slight variant of the traditional anagram problem called superanagram. Here you are to write a two class application that reads in two words or phrases from the keyboard, and then judges if the first phrase is an anagram of some of the letters in the second phrase. Here are some examples:
* mo / moo (yes)
* mo / mOO (yes - capitalization doesn't matter)
* moo / mo (no - first phrase is NOT an anagram of some (or all) of letters of second)
* rip / ziPPer (yes)
* abc / aabc (yes)
* aabc / abcde (no - too few a's in the second string)
* flipper / rip (no)
* Clint Eastwood / Old west Action! (yes - the two can have exactly the same letters)
You must use the Scanner class to read in the input strings. Use the nextLine() Scanner method, rather than next(), since spaces may be present in the two phrases that are submitted.Your program should either print YES, if the superanagram relationship is satisfied, or NO, if it isn't.
The classes MUST be called SuperAnTester, and SuperAnagram
* use the String methods toLowerCase() and (possibly) toCharArray(). The former takes all letters in a String and changes them to lower case; the latter converts a String into an array of characters. Also, this assignment is - of course - about characters and character matching. For some useful background on characters and how to work with them, watch the movies in the textbook at the ends of section 4.1 and 7.1.
* Very important: suppose you have two arrays of characters such that the first is purported to be an embedded anagram of the second, in the sense we've described above. How can you tell? The single most important thing to do, before you write a single line of code, is to work out a paper and pencil algorithm that distinguishes between superanagrams and non-superanagrams.
* Your classes must be commented! In particular, each method must have a one line comment just below the header line, which tells what the method is supposed to do.
* Algorithm Idea #1: make a scoreboard for the letters a to z. Every time you encounter a letter in the second String, up its count by 1; Then, every time you encounter a letter in the first String, lower its count by 1. Accept if the scoreboard ends up with all entries >= 0. (of course make sure you understand why this is - use pencil and paper to convince yourself!!).
* Algorithm Idea #2: convert strings to arrays. March down first array (representing the first string). When you encounter a letter, look for it in the second array. If you find it, blank out the occurrence in the second array; if you don't find it - it's not a super anagram. When you're all done, you've got a superanagram if your search in the second array never goes bad.
public class SuperAnagram{
private String wordOne;
private String wordTwo;
private char firstArray[];
private char secondArray[];
[code]....
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Oct 19, 2014
how to print from bluej onto actual paper? how to do the formatting and configuration etc.
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Nov 7, 2014
I'm trying to make a java program that draws a spiral like this: [URL] ....
It was use a draw method to draw it in a specific way. What I have in my code so far is:
for (int i=0; i<line.length; i++) {
line[i] = new int[4];
line[0].x = 0; line[0].y = 0;
line[1].x = 0; line[1].y = boxSize;
line[2].x = boxSize;line[2].y = boxSize;
line[3].x = boxSize;line[3].y = 0;
It would be made through a 2d array and the values for how big the lines are would be stored in another file called line_details.txt which contains these values 0 200 1 175. So how would I implement this stuff into a Java code?
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Mar 11, 2014
This code is for a GUI Java program that is supposed to convert back and fourth between two numbering systems. For example, binary to decimal or decimal to binary. I have created methods for some of the conversions however, I could successfully develop a method to convert from hex to binary. If you plan to run it to see what happens to the current method that I made please know that in the GUI the north end from left to right is as follows.
The textfield is for user entry of any type of data. The first combobox is for the user specifying to the program what type of data he or she entered. The second combobox is for the user to choose what he wants that data converted to. The button is to convert it. The south side has a textarea that gives out the results. Please note that only some of the conversions work so far. There are comments in the code to label which methods do what converisons. Need to find a method that will convert from hex to binary, what is wrong with the current method.
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
[Code] .....
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Nov 9, 2014
I have been trying to make a football league table in java based on text input and output. I want to to know if i have done task 1 right if not could you
Task 1. Design and implement classes SportsClub (abstract class), FootballClub.Classes should include appropriate methods and hold information about name of the club,its location and various statistics about the club. FootballClub should include statistics such as how many wins, draws and defeats an instance of it has achieved in the season, the number of goals received and scored. The number of points that a club currently has, and number of matches played.
Task 2. Implement a class PremierLeagueManager which extends interface LeagueManager. PremierLeagueManager class maintains a number of football clubs which play in the premier league. The class should create a menu based on text input and give the user the choice of:
• Create a new football club and add it in the premier league.
• Delete (relegate) an existing football club from the premier league.
• Display the various statistics for a selected club.
• Display the Premier League Table
Here is my code for Task 1:
public abstract class SportsClub {
int position;
String name;
int points;
int wins;
int defeats;
int draws;
int totalMatches;
[code]....
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May 28, 2014
I have a JSP and Java program which will read data from Excel and add them dynamically to create table.My requirement is i should able to edit the columns what ever the data that was fetched from Excel and export those contents to another excel file.This should happen on clicking a button, i mean to exporting the contents of the table.
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Mar 16, 2014
i have 2 java program the first java program is main menu of my program. the 2nd is Calculator.
#1 Program: Main Menu
import java.awt.event.ActionListener;
import java.awt.event.*;
import java.awt.*;
[Code].....
in the main menu there is a Jbuttons. is there a way to run the #2 program: Calculator when the 1st Jbutton(Calculator button) clicked ?
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Dec 26, 2014
I wanted to build an mp3 player as a Java project. One crucial part of the project involves being able to play an mp3 fie. I am not able to find the right api (if one exists) and am not able to find a suitable answer when searching on the web. A simple code snippet illustrating the playing of mp3 file using Java program. Also, I am using Eclipse IDE and how to import files if any importing of files is required.
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