I've made a small GUI app where you enter a website Into a JTextArea (area) and It appends It to "<a href=http://..... The problem I have Is the area.requestFocus() leaves a single space and the href ends up as URL....Is there a way to move the focus one space to the left or to backspace the appended website ?
View RepliesHow do I move focus from a jcombobox to a specific component say a jtextarea.
My attempt below seems to be moving to a random component not the desired jtextarea.
takenByCombo.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_TAB ) {
e.consume();
dayJTArea.requestFocus(); // focust not moving dayJTArea
}
}
});
I applied the above logic to move focus from a specific jtextarea to another jtextarea as seen below and it works as desired.
dayJTArea.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_TAB ) {
e.consume();
monthJTArea.requestFocus();
}
}
});
I want to use backspace button in my keyboard how can i create this button in my code ???
View Replies View RelatedI'm trying to replicate the rol(rotate left) instruction in assembly though can only get as far as shifting the bits with '<<' or doing Long.rotateLeft(var, 5). Both of these method don't wrap around the bits as the rol instruction does.
View Replies View RelatedI can't find any resource on the net about a simple Java code just to move a gif image left or right. I've already accomplished the up, down, and center and they're working fine, thus, I'm still struggling with moving the image left or right. Here's the code.
public class MoveIt extends Applet implements ActionListener
{
private Image cup;
private Panel keypad;
public int top = 10;
public int left = 10;
[Code] ....
I remember in Visual BASIC it's easily achieved by NameOfImage.left = NameOfImage.left - 10 to move left and NameOfImage.left = NameOfImage.left + 10.
I am having issues with drawing shapes from bottom right to top left.
Issue:
- g.drawRect() will show like I am calling g.fillRect()
- other shapes will not even show the shape in that area
Needs:
- g.drawSHAPE needs to show and not be filled unless I have my fill checkbox selected
The Program:
- Create a JFrame with a draw panel and a component panel
- have a combobox with shapes that, when selected, will draw that shape in the draw panel
- have a button that, when clicked, will launch JColorChooser to change the color of the drawn shape (draw panel is set to black)
- have a checkbox that, when checked, fills the shape
- have mouse listeners to adjust X and Y and will instantly update the shapes size to where you drag/click/press/release
Code for my drawRect():
Java Code:
// if statement to check if mouse drag X is less than starting X
if(x2 <= x){
if(emptyORfill.isSelected()) // emptyORfill is my JCheckBox
g.fillRect(x2, y, x-x2, y2-y); // x-x2 is the same as Math.abs(x2-x)
else
g.drawRect(x2, y, x-x2, y2-y);
[Code] .....
This is just for my Rectangle. This will show a filled rectangle when both mouse drag X and Y are less then the starting X and Y. If I take this fully functional code and adapt it to drawRoundRect(), the round rectangle wont even show the shape when mouse drag X and Y are less than the starting X and Y but will be fine if one or the other is less than the starting X or Y. NOTE: This same exact code worked on my classmates laptop in her program, but in my program on her laptop it did not. She took out the "else" in the else if's and just made them if statements all the way down and it worked on her laptop in my program, but the same "fix" did not work on my pc.
My mouse listener just sets X and Y values in my Shape class that updates my shape methods. I have an item listener for my comboBox that sets default values when a new selection is made and enables/disables editable on my fill checkbox for certain shapes. My action listener looks for the button click and the checkBox click.
I Want to identify up, down, left and right keys with the keylistener() WHATE NAME DO I IDENTIFY IT WITH
View Replies View RelatedI am getting errors when I try setting left and right values (which are String types) for my tree.I tried doing something like:
Node node = new Node("Is it human?", null, null);
node.getLeft().setNode("Is it Zelda?");//the first left Q
node.getRight().setNode("Is it Kirby?");//the first right Q
but that gives me a runtime error of "java.lang.NullPointerException" which points to the line 2. I also tried this:
Node node = new Node("Is it human?", null, null);
node.setLeft(setNode("Is it Zelda?"));//the first left Q
node.setRight(setNode("Is it Kirby?"));//the first right Q
but that gives me another error, pointing to the setNode for both lines 2 and 3,plus it wouldnt make sense since both setLeft and setRight takes in Node types, not String types.
Here is my Node class:
public class Node {
private Node leftPt, rightPt;//left and right pointers for Node
private String node, left, right;
public Node(String node, Node leftPt, Node rightPt){
this.node = node;
this.leftPt = leftPt;
this.rightPt = rightPt;
[code]....
We're learning printf with JGrasp as the environment at the moment. Heres the problem.
I have a string as this:
String header1 = new String ("Caswell Catering and Convention Service");
as for the printf line, its this:
System.out.printf ("%-5s/n", header 1);
The output is right justified no matter the use of the "-" or without and I can't seem to find the correct thing to do to make it left justified.
I have a JPanel class that creates a left panel and a right panel. the left panel and right panel both have one button each. What I’m trying to accomplish is when I click on the button in the left panel that it updates the button in the right panel. I have to do this without changing anything in the right panel.Basically I have to have LeftPanel have a way to keep track of an instance of RightPanel and I would have to do this through the JPanel class. But I have no clue where to begin on even accomplishing this.
View Replies View RelatedHow can I make this program print so the output looks like this ( ignore the - -- lines ):
--------1
-------21
-----321
---4321
-54321
Instead of:
1
21
321
4321
54321
Java Code:
public class c5e18c {
public static void main(String[]args){
int i;
int j;
for(i = 1; i<=6; i++){
for (j = i; j>=1 ;j--){
System.out.printf(j + " ");
}
System.out.println();
}
} mh_sh_highlight_all('java');
}
I'm trying to make a puzzle that gets the user input and moves the rows either to the left or right, the columns move either up or down depending on what the user wants. The problem I'm getting is a type mismatch for my RL method which moves the rows to the left.
import java.util.*;
import java.io.*;
public class Numbrosia {
static int [][] board = new int [5][5];
public static void main(String[]args){
Scanner scan = null;
try{
[code]....
package hw9;
import java.util.Scanner;
import java.util.Stack;
public class stack {
public static Integer evaluate(String expression) {
Scanner scanner = new Scanner(expression);
Stack <Integer> operands = new Stack<Integer>();
[Code] ....
When I input my expression which has spaces between characters e.g.:10 2 8 * + 3 -, it worked; when I put expression which may not add space between each char e.g.: 3 14+2*7/, the error showed:
Enter a postfix expression: 3 14+2*7/
Exception in thread "main" java.util.EmptyStackException
at java.util.Stack.peek(Stack.java:102)
at java.util.Stack.pop(Stack.java:84)
at hw9.stack.evaluate(stack.java:22)
at hw9.stack.main(stack.java:45)
This is the other code problem I have. The user should be able to enter the amount of digits the array should be shifted left. For example, if the user entered 3 and the array was 1 2 3 4 then it should return 4 1 2 3. here is my code.
public char[] replaced(char[] array, char oldChar, char newChar) {
char myFun[] = new char[array.length];
for (int i = 0; array.length > i; i++) {
myFun[i] = array[i];
[code]....
I am new to JSP . I am Using Jdeveloper UDI to create JSP Pages.
My main idea in creating JSP to display data from one or more tables.
I created 2 pages called Serverpage.jsp and Messagecount.jsp and it is working fine as expected,
Now i want to create home page and it should also have left navigation menu and it should contain MessageCount and MessageStatus.
When i click on Messagecount or MessageStatus my home page should refresh and have to display new JSP page (MessageCount.jsp or Serverpage.jsp)
Here is my JSP pages
Serverpage.jsp
<%@ page contentType="text/html;charset=windows-1252" isELIgnored="true"%>
<!--<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>-->
<html>
<head>
<title>Welcome to Monitoring Page!</title>
<link type="text/css" rel="stylesheet" href="jdeveloper.css"/>
<script language="javascript" type="text/javascript" src="Calender.js">
[Code] ....
We have a J2EE business web application that runs in WebLogic. We noticed in application log files errors messages that seems like "No resource available in db pool", it means all the connection objects (to Oracle database) are used. Then the application is unstable and unseable.
I think the maximum number of connections configured in Weblogic pool has been reached due to an increase of users and activity. But when the workload decreases the application is still out of service. It seems connections objects are not relased to the pool. What can be the explanation for this issue ? Normally it is managed by the container (EJB3 for the business tier).
Once the limit of the pool is reached it is necessary to restart the server to solve this kind of error ?
I am writing a program for a game. It is between the user and a virtual player. The game starts with a pool of consecutive integers 1-100. The size of the pool is based on a random generated number at the beginning of the game. At the start, both players' scores are 0. For each turn, the player picks one number from the pool. That value is added to the player's score, the computer gets the sum of all the remaining numbers in the pool that divide evenly into the player's pick. The player's pick and its divisors are then removed from the pool.
The player should be able to play the game as many times as she wants without ending the program. Instructions should appear on the screen only once at the start of the program.
For each turn, both players' current score, the current pool of numbers, and a prompt for a number to be entered should show onscreen. I have written the code until I get to the function that updates the pool of numbers after a turn.
import java.util.Scanner;
import java.util.Random;
public class SlickPick {
public static void main (String[] args){
Scanner read = new Scanner(System.in);
int []pool = new int[100];
[Code] ....
My thinking is that I need to use the binary search to find the indexes of the divisors array and then use those indexes as the start values. I'm not sure how to assign the divisors indexes to start. Do I need an array for start? Whenever I run the program, the only value missing is 3.
//Name : poolUpdate
//Description : This function modifies the contents of the pool as a result of a turn of play.
//Parameters : The pool array, the divisors array, the size, and the user's pick.
// :
//Return :
public static void poolUpdate(int[] pool, int[] divisors, int size, int pick){
int low=0;
int high=size-1;
[Code] ....
I'm creating a simple login screen and I need to focus on the first field "login" after I click a submit button, so when the page return. I tryed using JS :
window.onload = function() {document.forms[0].elements[0].focus();};
but it not worked. I need a solution if possible without using JS. I'm using raw JSF implementation without PrimeFaces or anything else like this.
I want to focus at a JTextField, how to do that? Can setfocusable work?
View Replies View RelatedI have two JFrames: frame1 and frame2. frame2 currently has focus, and I want to determine which component of frame1 would have focus if I were to switch focus to frame1, hopefully without actually temporarily changing focus.
Is it the KeyboardFocusManager who keeps track of which element in each frame has focus? Or does each container itself keep track? How does Java figure out which element in a frame gets focus when I switch to that window?
I'm facing a problem in controlling the focus traversal mechanism inside a jframe...as i want the focus to travel from top to bottom by pressing tab key regularly , but it travels left to right and then top to bottom through the textfields... The form looks like
textfield1 textfield4
textfield2 textfield5
textfield3
The focus travels from 1 to 4 , 2 to 5 and then rests at 3. but i want it to be like from 1 to 2 to 3 and then 4 and 5....
I am working on a Java program to monitor meal consumption by members of an organization. They swipe their ID cards, enter PIN, and number of meals they want. System knows if dining room is open and what meal based on time. The system then prints out a receipt on an Epson TM-T88IV receipt printer.
The system is running in console mode. My problem is that when the system prints, a Notepad window pops up for milliseconds and then the Java program loses focus. The screen reverts back to Windows home screen. I'm using Windows XP, SP3 and the latest Java build.
How to prevent the loss of focus?
so i'm working in a chat program and i'm trying to make it so that you are able to open another tab yet still be able to chat.
right now the client that the user download uses the keyadapter to get the keyboard input, but whenever the user un-focus the chat window, the keyadapter no longer gets the keyboard input.so is there another way i can get the keyboard input? so it doesn't matter what window you are focused on, you get the keyboard input either way?
Im trying to embed swt browser in swing , the problem that I have is that i cant change the value of JTextField even when i request focus ,when i try to give input the input goes in the browser's page bar..
public static void main(String[] args) {
final SwtBrowserCanvas browserCanvas = new SwtBrowserCanvas();
final JTextField textField = new JTextField(15);
[Code]....
refer to this code~
import java.awt.GridLayout;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.Color;
import javax.swing.JButton;
[Code] ....
This code will not dismiss the MemoryDateDialog when it loses focus, while it is what it is intended to do.
btnMemoryReason.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
List<MemoryDates> lMemoryDates = db.getMemoryDates(custID);
final MemoryDateDialog mdd = new MemoryDateDialog(lMemoryDates);
[URL] .....