Java Applet - Open / Zoom In / Out Of Image
Jul 29, 2014
Working on an assignment for a class: Create a DESKTOP application that allows you to open an image file and enables you to zoom in on or out from an image. I believe all I need is too create an open button to open the actual image file, instead of the html link, this code is an example that the teacher provided.My current code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.net.URL;
import java.io.*;
import javax.imageio.*;
[code]....
how to add an open file button so I can search for the file and then open it into my program.
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Dec 16, 2014
I am trying to make a japplet that has open, zoom in and zoom out buttons for pictures. I am not sure how to go about an open button that will read the file. I have the picture url hard coded in the file to open but would like an open button with a file/folder dialogue.
This is what I have so far
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.event.ActionEvent;
[Code] ......
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Apr 30, 2012
I have an applet coded to recieve an image and upon mouse press i wish it to be cropped. For some reason its not implementing, I just think my brain is no longer doing what i think it should be or something, along those lines.
Code below
import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.awt.image.ImageFilter;
import java.awt.image.ImageProducer;
public class CropImg extends Applet implements MouseListener
[Code] .....
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Jul 29, 2014
What's wrong with my Java program? When I open it using appletviewer, the applet opens but stays blank and an error message appears in Terminal.
Java Code:
import java.applet.*;
import java.awt.*;
public class DemoColor extends Applet
{
Font littleFont = new Font("Helvetica", Font.ITALIC, 6);
public void paint(Graphics gr)
[Code] ....
Error Message:
Exception in thread "AWT-EventQueue-1" java.lang.IllegalArgumentException: Color parameter outside of expected range: Red Green Blue
at java.awt.Color.testColorValueRange(Color.java:310)
at java.awt.Color.<init>(Color.java:395)
at java.awt.Color.<init>(Color.java:369)
at DemoColor.paint(DemoColor.java:24)
[Code] ....
HTML file:
<HTML>
<APPLET CODE="DemoColor.class" WIDTH = 420 HEIGHT = 300>
</APPLET>
</HTML>
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Aug 3, 2014
The PNG Image is already in the src package thingie...
It's a 400 * 258 image...
Java Code: package frame;
import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;
public class Temperature_Convert extends Applet
implements AdjustmentListener {
private Image temp;
private Scrollbar bar;
[code]....
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May 4, 2014
I want to display a picture but it isn't working:
public class BildApplet extends Applet {
Image car;
public void init() {
this.setBackground(new Color(200, 200, 255));
car = this.getImage(getDocumentBase (), "redcar.gif");
[Code] ....
Why not?
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Apr 8, 2014
Code to crop and save an image in applet.
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Jun 27, 2014
I am starting a project of a little game for my brother and I wanted to know whether a few things were possible using Java (I know the basics and am currently learning more, but I have about a year to complete this so I have time to learn what is needed).What I need to be able to do:Be able to view a PDF as well as zoom in and pan around itBe able to enter/edit text in said PDF fileBe able to hide some of the text in this PDFBe able to do this on several PDFs in one program (They won't be open at the same time)
Is it possible to do this in Java? If so, how? (As in, what things would I need to learn or what would I need to complete it)If it makes my question easier, what it will be is a London Underground Tube Map (Which is a PDF file)where some station names disappear and the player has to guess which station(s) are missing.
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Jan 9, 2014
How to zoom the following jtextpane
package openurdu.page;
import java.awt.Color;
import java.awt.ComponentOrientation;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.RenderingHints;
[code]....
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May 8, 2015
I have a problem using JFreeChart with JavaFX. I wrote a small program here . At first the graph likes this:
I use fullScreen function to display the JFreeChart Line Chart Demo 2. Here I use SwingNode, ChartPanel to embedded JFreeChart into JavaFX Panel.(Detail part will be included in code later)
Then I press ESC to exit fullScreen. Then it looks like this:
So far, it's as expected. Then I use mouse drag to enlarge the window. Here comes the problem, as the following picture.
Can you see that, seems like appear another graph. And I must click on the window, then everything will become good. I wish the graph shows well even when I drag the window to enlarge, is there something I missed? And here is my code:
package testxychart;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
[Code] ....
I think, when I use several graphs in one JavaFX Panel, this will becomes a big problem.
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Nov 1, 2014
I want to design an open-answer quiz game using Java. Basically, the plan is to design a quiz where the name of a medicine is displayed as "the question" and the player will need to input the unique code (as "the answer") of the medicine in an open box (all the codes are two characters). The list has about 204 named medicine (with potentially more to be included at a later stage). The questions will not appear in the same order for each session restarted; they will appear randomly.
The player will have 60 seconds, and for each correct answer, will score 1 point and add 2 seconds to the timer. The player will also have 6 "lives", and for each incorrect answer, the player will lose a life, with no effect on the time.
The idea of the game is that the player memorise as many of these medicine codes as possible.
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May 13, 2014
I just went over how to open and edit text files in java. Was wondering how to open mp3, mp4 and other media files, is there a special package i need to import or plugin that I need to install in eclipse?
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Jan 13, 2015
I am struggling getting my java app to open a console window on either MacOS or windows and run a command. On windows I can get the cmd.exe program to open, but it won't execute the command. On MacOS, I cannot get it to even open the terminal.
String run = "c:
s34bil.exe
elap5.exe" + in + rst + out; //in, rst, out are parameters for the relpa5.exe file.
try {
Runtime rt = Runtime.getRuntime();
rt.exec(new String[]{"cmd.exe","/c",run,"start"});
} catch (IOException ex) {
Logger.getLogger(issrsUI.class.getName()).log(Level.SEVERE, null, ex);
}
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May 28, 2014
I am looking for pure java API to be able to create/read outlook tasks.
Any open source API's available for the same.
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May 19, 2014
Any way to get my Java window to open with a certain width and height. I've been googling and haven't found to much valuable information. Here is what I have so far.
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
public class JavaWindow{
//Bring up the frame.
private JFrame f = new JFrame("JavaWindow");
[Code] ....
When you compile that it runs a small window. I would like that window to be bigger when the file opens.
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Aug 30, 2014
I am using itext to create pdf files , i have filtered some records (preferably i can say around 90) which has the option to open pdf for individual record. Now I need to open all the pdf's of filtered records on a single click , without asking for a open dialogue box. How to go about this ??
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May 26, 2012
I'm using jdk7 and I get this error when I compile Exception in thread "main" java.lang.Error: Unresolved compilation problem: at First.main(First.java:16)
Java Code:
import javax.io.*;
import javax.awt.*;
import javax.lang.*;
import javax.applet.*;
import javax.net.*;
import javax.util.*;
import javax.swing.JApplet;
import javax.swing.JFrame;
public class First extends JApplet {
public void init() {
getContentPane().add(new JLabel("Applet!"));
[code]....
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Nov 2, 2014
For a project I have to create an online survey, I cannot use a per-made online survey system because I have really specific needs that no pre-made system can satisfy, so my idea would be to create it in java and store the data in some simple text file, which are fairly easy to work with in java. My question is, is it possible, and if yes how difficult is it, to put the entire thing online? What worries me isn't putting the applet itself online, but the text files that should collect the data, I already have the website to host it.
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Nov 22, 2014
I am trying to pass parameters from he following HTML file to an applet. the applet is not initializing and the iam getting the following error on the console. I also have both the html file and and the java applet under the same source file in eclipse.
java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(Integer.java:542)
at java.lang.Integer.parseInt(Integer.java:615)
at applet.DisplayMessage.init(DisplayMessage.java:16)
at sun.applet.AppletPanel.run(AppletPanel.java:434)
at java.lang.Thread.run(Thread.java:745)
Here is the html file
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
[Code] ....
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May 12, 2014
I like to know how to write root function in java applet. I know it in java function. Ex:
import java.lang.*;
public class Maths {
public static void main(String[] args) {
// get two double numbers numbers
double x = 9;
double y = 25;
// print the square root of these doubles
System.out.println("Math.sqrt(" + x + ")=" + Math.sqrt(x));
System.out.println("Math.sqrt(" + y + ")=" + Math.sqrt(y));
}
}
working fine. but If I tried in applet it's not working. Ex:
evap_trans = 0.0135 * SRAD * ( TMEAN + 17.78) * Math.sqrt(TMAX - TMIN);
If I execute above said formulae with out "Math.sqrt" results are ok. If I used then results shows ZERO.
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Nov 23, 2014
I am trying to go about making this applet a bit different then normal. The issue I am having is it is drawing an applet but, not the right dimensions, it's able to be resized, lastly the background color is not being set. I mean, I suppose I could call paint() and just draw it out but, I read that I could make the applet pop out to the dimensions I would like. None of this is working sadly.
package com.powder.game;
import javax.swing.*;
import java.applet.*;
import java.awt.*;
import java.util.*;
import java.io.IOException;
import java.lang.Math;
[code]...
my exact question is can I rewrite the applet to make a pop out window and should I just call paint()?
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May 8, 2013
When I embed java applet in html the "ClassNotFoundException" message appear to me, how to overcome this ....
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Mar 29, 2015
I have An Issue With My Java Applet. Im Trying To Share My Variables With Another Class, But Its Not Working.
Class 1
package com.Tobysmith10.game.main;
import java.applet.Applet;
import java.awt.Graphics;
public class Game extends Applet{
public void init(){
setSize(850,480);
public void paint(Graphics g){
g.fillOval(x,y,20,20);
}
}
Class 2
package com.Tobysmith10.game.main;
import java.applet.Applet;
public class gameLoop extends Applet implements Runnable{
public int x, y;
public void run(){
while(true){
x = 100;
y = 100;
}
}
}
So im sharing the x and y variables with the Class 1 , but I get yellow lines under it and when i run the program, it crashes, how do I get class 1 to recognize the variables from class 2 ?
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Jun 1, 2014
I've been using a Java applet for sports tables.It has been very useful for me. However, the recent developments from the people at Oracle have made this program impossible to use. The point is that I need this program and I need it fast.I've been in touch with the person who once created this applet and he has no intentions at all to upgrade it or do anything to make it function. How to make the program works with their new updates.
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Jul 19, 2014
My company is a transport company. We receive goods form partner and transport it to customers. There is a process that we must accept a number of kilograms into bill after we weigh goods by the electronic balance(the electronic balance have serial port plug in PC) . To decrease this process, I'm looking for a project "read serial port wrote in java applet". Who have code,
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Feb 24, 2014
my java applet - displaying output with text
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