Multiple JPanels - Paint Not Working

Jun 17, 2014

nothing is painted.Here's the code for the Main class:

Java Code: import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.Random;

[code]....

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Sep 22, 2014

Is it possible to paint to the screen without using methods such as paint(), paintBorder(), paintChildren, paintBorder, paintComponent, paintAll() and any other paint like methods I may have missed. These are, by the way, taken both from JComponent and Component. So, is it possible?

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Multiple Key Inputs Not Working

Sep 16, 2014

i am currently making a game in java and currently i am working on the basic mechanics. most of it is working fine but i cannot seem to make it so when the user presses and movment key and space to fire a bullet the bullet fires in the direction they are moving. here is the code i have for movement.

public void keyPressed(KeyEvent e) {
// TODO Auto-generated method stub
int bulletx = Player.x + 100;
int bullety = Player.y + 20;
int key = e.getKeyCode();
if( key == e.VK_W){
p.moveUp();
}
if(key == e.VK_S){
p.moveDown();

[code]....

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Text Based RPG Game - Working With Multiple ArrayLists

Feb 22, 2014

I have come across an issue with arraylists. I am writing a text based RPG game as something to start with ...

Initially I had a single zone which was all stored in an arraylist and everything was working in regards to the player moving around. The problem I now have is how to add further zones to my game. Ideally I would like an arraylist for each zone, and would use the below to create each arraylist

public static ArrayList<RoomsClass> castleMap = new ArrayList<>();

The problem I now have is how to handle the player moving, initially with a single zone/arraylist I could reference that arraylist directly

public void findRoomCoords(int ID) {
for (int i = 0; i < castleMap.size(); i++) {
if (castleMap.get(i).roomID.equals(ID)) {
PLAYER.setCurrentRoomZone(castleMap.get(i).roomZone);
PLAYER.setCurrentRoomX(castleMap.get(i).roomX);
PLAYER.setCurrentRoomY(castleMap.get(i).roomY);
PLAYER.setCurrentRoomZ(castleMap.get(i).roomZ);
}
}
}

My initial thought was to use a getter/setter to remove the reference of castleMap from my movement code in order to access different arraylists, however this is where things have fallen over, I can't seem to work out how to get the arraylist name to change, depending on the outcome of the setZoneMap() method.

public void setZoneMap() {
switch (PLAYER.getCurrentRoomZone()) {
case 0: {
zoneMap = Castle.castleMap;
break;

[Code] ....

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Sep 25, 2014

I want to know how can I make a JPanel slide to to another JPanel (Slowly move to the next). I've made multiple JPanels so when I click on next it will take me to the next panel. Now I just need to add a nice transition to make my program look nicer. Is there an easy way to do it? or any way is fine I just want to add a transition ....

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Jan 6, 2015

The program i am creating consists of two JPanels (currently) and one canvas. The canvas is in the center of the JFrame, while flanked by JPanels where both have 13 buttons each.

To paint a simple picture, my program will draw letters on the middle canvas when a button is clicked.

I created my own buttons that implement the ActionListener interface , so when a button is clicked it will display its character in the console. But my question is, How do you implement the listener to draw something on the Canvas when the button's are clicked?

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I am tasked with creating several JPanels each of which has a title centered at the top. As such I have created parent panel that each panel extends. However, I am uncertain as to whether drawing the string on the panel or using a JLabel is the best solution. The panels might allow dynamic resizing...

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Feb 11, 2014

I am working on writing a desktop based email client using swing. First some specifics: I need to show emails in a (dynamically updatable) vertical list. Each item in this vertical list would represent an email showing: (a) the subject, (b) a photo of the sender that I have locally available & a couple of buttons. So, I plan to create a JPanel containing a JLabel to show the Subject, The photo inside a JLabel & JButtons. I have the layout of this panel done and is not a problem.

My problem is with stacking all these JPanels (each representing an email) and showing them on the UI as a list. I am not sure of any way to do this. Moreover, when a new email is received, it has to be displayed at the top of the list (not at the bottom).

Specifically, I need a good way of displaying a vertical list of JPanels & be able to add new JPanels at the top of the list.

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Sep 10, 2014

i am to add jpanels to an arraylist such that it forms a grid like a 2d array. when i add the first colunm and have to iterate and store the next sequence of jpanels it still stores it in get(0), instead of get(1).

[/ temp.add(jPanel9);
temp.add(jPanel10);
temp.add(jPanel11);
temp.add(jPanel12);
temp.add(jPanel13);
temp.add(jPanel14);
temp.add(jPanel15);

[Code]...

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Swing/AWT/SWT :: Can't Change Visibility Of Two JPanels When Calling Method From Button Event In Another Class

Dec 30, 2014

I have two classes involved in this portion. CheckIn_Search

(class #1) is my main UI and I am collecting search information from the user in a jPanel form. When they click "Search" it passes the search criteria to a method that contacts a web service and gets the results. These results are passed to coSearchResults

(class #2) that opens a jFrame and jTable (in modal format, over the main window created by CheckIn_Search.

The user selects a row in the table and that selection data is passed back to coSearchResults to populate a new jPanel form. When the data is passed from coSearchResults, I want to close its window, hide the first jPanel in CheckIn_Search and make the second jPanel visible. To accomplish this, I created a method in CheckIn_Search that simply hides/shows the panels (it will do more later).

I instantiate and call the method in CoSearchResults as part of the button click event. The problem is, it doesn't work. The panels are unaffected and there are no errors. I've put in break-points and it goes into the method.. Here is the coSearch_Results code.

Here is am retrieving the jtable row id and using the first value in the row to get the data from the table model as there is more data than what is displayed in the table. I'm sending that whole row of data to the method that changes visibility.

private void btnOKActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnOKActionPerformed
// TODO add your handling code here:
int rowNum = jTable1.getSelectedRow();
String coNum = jTable1.getValueAt(rowNum,0).toString();
String[] text;

[code]....

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Jun 25, 2014

import java.awt.Graphics;
import javax.swing.JFrame;
class node{
node(int a,node next){
this.a=a;this.next=next;

[Code] ....

The code was ran not right, I want it's result is: 1 2 3 4 5 and delay(1000) every time that it prints a number

Example: 1 (delay(1000)) 2 (delay(1000)) ....

And the paint must do that

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Jan 3, 2015

I am currently drawing graphics onto a JPanel, by overriding the standard paintComponent method.

Is it possible to call a method to draw some predefined shapes, instead of filling this method with all the stuff I need drawn, and if so, how do I do that?

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Swing/AWT/SWT :: How To Paint Image On Frame

Mar 8, 2015

I simply want to paint an image on my frame, just once each time the paint() method is called, but how to call the paint method in any good way. This is how it looks:

import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;

[Code] ....

I have a frame in another class, and from my assumption I need to somehow tell my paint method to paint on that specific frame right?

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Oct 14, 2013

I am screwing around with mouse listeners so i decided to make a basic paint program. It works fine but when it draws more than 100 circles it errors out. i know why its doing it (its because i set the array to 100) but my question is how to make it so it has not limit in the array.

Here is the code

public class PaintProject extends Applet {
int numClicks = 100;
int numCicles;
int xCoord[];
int yCoord[];
boolean paint;

[Code] .....

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Jan 19, 2015

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 ....

public void paint(Graphics g)
{
g.drawImage(background, 0, 0, this);
if(over == false)
{
tick();

[Code] ....

(I have tried replacing the if with a for, that does not work.)

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Feb 5, 2015

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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class LinePlot extends JFrame {
public LinePlot() {
super( "Line Plot" );
setSize(800,600);

[Code] .....

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Jan 27, 2014

Since the Paint methods are being executed anytime a frame is being moved or resized, how much overhead could an application incur if the application

- has many frames
- doing a lot of moving
- doing a lot of resizing
- has a lot of background processes running.

As a rule, I try to only keep the most essential code in these types of methods and wondering if that type of thinking is "old school".

How much overhead is actually involved? If you needed to monitor the size of a given frame anytime the user resizes it, would you be concerned that using these methods would incur too much overhead?

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May 23, 2014

Java Code:

public void draw(ArrayList<int[]> good,ArrayList<int[]> bad){
drawing = true;
goodToDraw=good;
badToDraw=bad;
System.out.println("Canvase/draw: Calling paint with a size of "+goodToDraw.size());
middleMan();

[code]....

What this does is two ArrayList are sent to the draw function.one called good and the other bad. Right now I am only working on good. What is suppose to happen is paint takes all the good coordinates and paints them but I seem to loose the arrayList size when repaint is called. You can see in the picture below of my console that it starts of with 20. Then because I was wondering if the scope was to short i called middleman to make sure that it held its size outside of the first function. Then finally it calls paint and tells me the array is empty. To simplefy..Why does my arraylist size go to zero when I call repaint?

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Apr 15, 2015

I have my paint application, i use the following mouse event to draw my shapes (mousePressed, mouseReleased, mouseDragged). Now after the user paint a circle for example, he must be able to drag the shape; to be able to do this. i think i must again implement the different mouse Events. I have done it and the drag is not working. How can i achieve this. can we implement multiple (mousePressed, mouseReleased, mouseDragged) in the same java class??

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Jul 24, 2014

I'm following this tutorial![URL] I've copied over a lot of the code and also copied/pasted other parts! I understand how it works, but I can't figure out why the "X" or "O" won't paint onto the screen when the window is clicked on! Only a button is drawn when I click on the screen.

/*
package tictactoe;
import javax.swing.*;
import java.awt.Image;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;
import java.awt.Toolkit;//look into this library

[code]....

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Sep 30, 2014

PaintWindow pw = new PaintWindow();
Random rand = new Random();
ImageIcon image = new ImageIcon("C:/Users/Ghostkilla/Desktop/gubbe.jpg");
setWidth(pw.getBackgroundWidth());
int height = pw.getBackgroundHeight();

[Code] ....

If you run this code it will move a picture from right to left and hit the left wall and then go to right again leaving the window (It stops there). I want to make so it hits left and then right wall continuously till someones close the window. So basically I am using a for loop to make it go left right all the time.

How to make so the picture moves from bottomleftcorner to toprightcorner diagonally without leaving the window.

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Mar 13, 2014

So I created little program. So window is in full screen. Paint method.
 
package Test;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.*;
import java.util.Random;
public class Main extends JFrame {
Graphics g;

[Code] ....

So, paint method works perfectly. He paint rectangle. Good. But I dont know how using ,,paint2'' method. I need when you press z button, ,,paint2'' method draw Oval in random coordination. So instead ,,paint2'' method i using repaint() but i dont know nothing about paint methods and so on. So how using ,,paint2'' method? Now when i run program, i get a lot of error..

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Nov 1, 2014

So, I have this simple program that paints a string on JPanel using g2.drawString("Hello world", 40, 120). Basically, I want to be able to keep track of many strings on the JPanel at once. I'm not sure how to do this. For example, I would want to have an ArrayList of objects that keep track of these strings.

I want to be able to click-and-drag these strings so I will need to know there locations, etc.

Right now, using g2.drawString, it only draws the string. I want something like gw.draw(myStringObject).

import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import javax.swing.JFrame;
import javax.swing.JPanel;

[Code] .....

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Jun 4, 2014

I am currently writing a small drawing program and I am having trouble with changing the size of the shapes. To do this, I have to access the arraylist shapes, check whether pressedX/pressedY is on any of the shapes in the arraylist using the findShape() method and then when released, uses moveBy() in the Rectangle/Oval/Line class and moveShape() in the miniDraw class to move the shape and draw it in the newreleasedX/releasedY position.

So far I think I have pin pointed the problem to being the method in all the shapes classes, that checks whether the pressedX/pressedY which is the on() method, and the findShape() method in the miniDraw class.

This is the minidraw class

import ecs100.*;
import java.awt.Color;
import java.io.*;
import java.util.*;
import javax.swing.JColorChooser;

[Code] .....

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Nov 3, 2014

I wanted to try out using a KeyListener to read what key I press so it can paint a circle in my frame, but I can't get it to work?

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Random;

[Code] ....

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I am developing an application to share my client screen with server, it is working well on swing. But i want to develop as web application, i am trying to using applet. But i am facing the fallowing problem..,

1) The Applet screen also open and project also running well on server mechine. But unable to see the client screen on the server.

2) The problem may be to display the JDesktopPane or JInternalFrame.

My working Server Code extends withe JFrame..Java Code:

package remoteserver;
import java.awt.BorderLayout;
import java.awt.Container;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JApplet;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

[code]....

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