japplet | 易学教程

How to visualize a neo4j graph

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I want to visualize a neo4j embedded graph within my JAVA application. I have read the Max De Marzi's Graph Visualization Blog but I could not find anything in JAVA but only ruby and C++ May you help me to find a guide to install something easy to visualize my graph? I need just to see nodes and relationships. P.S. I do not want to use external programs. As a result I do not like: linkurio neoclipse webadmin gephi etc. What do you mean by visualize in Java application? If you wish to display it, well there are a lot of options. Have you checked this: http://www.neo4j.org/develop/visualize out?

How can I display an image in the Applet?

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I have an image and I want to display it in the applet, The problem is the image wont display. Is there something wrong with my code? Thanks... Here's my code : import java.applet.Applet; import java.awt.*; public class LastAirBender extends Applet { Image aang; public void init() { aang = getImage(getDocumentBase(), getParameter("images.jpg")); } public void paint(Graphics g) { g.drawImage(aang, 100, 100, this); } } aang = getImage(getDocumentBase(), getParameter("images.jpg")); I suspect you are doing something wrong, and that should be just plain: aang = getImage(getDocumentBase(), "images

How can an applet Read/Write files on the local file-system?

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In Java JApplet, file read and write operations did not work in webrowser. When I click "Ok" button, it should be write some file in our local path. But it shows below error. How to resolve this error? java.security.AccessControlException: access denied ( "java.io.FilePermission" "D:/.../.html" "write") By default whenever a applet tries to access local resources, its denied as a part of security layer. You have following options if you need to access using applet: Sign your applet using any signing mechanism and then publish, ( though this one is not a useful and recommended way of doing this

Convert JTextField input into an Integer

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问题 I am new to JAVA, I am trying to convert an input from a JTextField into an integer, I have tried loads of options but nothing is working, the eclipse is always giving me an error and the errors are not making sense to me. import java.awt.Graphics; import java.awt.Color; public class circle extends Shape{ public int x; public int y; public int Radius; public circle (int Radius, int x, int y, Color c){ super(c); this.x = x; this.y = y; this.Radius = Radius; } public void draw(Graphics g){ g

Django add extra field to a ModelForm generated from a Model

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I have to generate a FormSet from a model but I need to insert an "extra value" in to every form. Specifically, I have a JApplet that generates some Markers and Paths on a image, and POST it on the server. In my model lines are composed from two Markers. But when I POST it, because I'm using the id generated from the JApplet and not from the database, I will not know from which Markers a Path will be composed. So I thought to insert a "temporary id" on the Marker on the form, and do the correct arrangements in the view before saving the Path. I thought about defining a custom form for the

Layering Objects (That extend JComponet) on JApplet

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问题 I currently have a JApplet within which I add two objects that both extend JComponet. Object A is basically a large square and object B is a small square, I need Object B to always be in front of Object A, however I cant work out how to set layering within the JApplet to do this. Current I am using the follow code, which adds both the items and displays them how I want however sometimes Object A is front of Object B. public void init() { add(myapplet, BorderLayout.CENTER); resize(200, 400); B

Simple animation using Thread.sleep() in ActionListener

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I'm having trouble with this code I am using to create a roulette wheel. The goal is to spin the wheel when I click the "SPIN!" button. I have done this by creating a for loop that should change the status of the wheel from true to false, which changes the orientation. This, when done fast enough, should create the illusion of movement. THE PROBLEM I AM HAVING : is that my wheel is only repainting after the whole for loop is done, despite my placement of the repaint(). So, it only spins one tick. Here is some sample code of my ActionListener: public class spinListener implements ActionListener

Java - Applet simply not displaying?

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Okay, so I did a little applet tutorial, and I read that the init() method is required for an applet to run. And it does. At least in my IDE (Eclipse). The Applet Viewer has no problems running my applet, when I try to do the <applet> tag in HTML, nothing displays, but it acts as though something is there (text position is altered by the tag). Here is my applet: import java.awt.*; import javax.swing.*; public class Applet extends JApplet{ public void init(){ Label label = new Label("Hello!"); this.add(label); } } And this is the code I'm using on my webpage: <applet code="Applet.class" width

Java applet Error … What is wrong?

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Java applet code package M257Applet import java.applet.*; import javax.swing.*; import java.awt.*; public class HellowApplet extends JApplet { public void init(){ Container cp = getContentPane(); JLabel lb = new JLabel("Hellowwwww"); cp.add(lb); } } html file <html> <head> <title>Applet</title> </head> <body> <APPLET CODE = HellowApplet.class WIDTH = 400 HEIGHT = 400 > </APPLET> </body> </html> Error Java Plug-in 1.6.0_22 Using JRE version 1.6.0_22-b04 Java HotSpot(TM) Client VM User home directory = C:\Users\pc ---------------------------------------------------- c: clear console window f:

Django add extra field to a ModelForm generated from a Model

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问题 I have to generate a FormSet from a model but I need to insert an "extra value" in to every form. Specifically, I have a JApplet that generates some Markers and Paths on a image, and POST it on the server. In my model lines are composed from two Markers. But when I POST it, because I'm using the id generated from the JApplet and not from the database, I will not know from which Markers a Path will be composed. So I thought to insert a "temporary id" on the Marker on the form, and do the