Annotation And Reflection Based Settings Saving System Library
Sep 12, 2014
I have been recently been working on a library to handle loading and saving settings in a Java application using annotations. Here is how the library is used currently:
package main;
import dhuk.settings.main.SettingsManager;
import dhuk.settings.main.SettingsTarget;
public class Main{
public final String keybinds = "keybinds.txt", settings = "settings.txt"; // Constant strings to be used as the file's paths
SettingsManager sm = SettingsManager.instance; // Singleton used to manage all of the settings files.
[Code] .....
Here is a link to my bitbucket repository: Click Here
I want to follow this tutorial on YouTube but I cant seem to find the JRE System Library on NetBeans? So I decided to just get Eclipse but when I unzip the download and click either .exe files(I only see two .exe files) it gives me this message:
"The Eclipse executable launcher was unable to locate it's companion shared library."
Which ultimately prevents me from using the software completely.
I search this source code in google about library system then i run this in my JCreator then that error appear . I think that problem is all about "main". where can i put that main ?
Is it possible to launch windows, specifically 8.1, directly into a java based program which would serve as the password entry screen? That is to say, instead of using the standard windows screen, could a java based alternative be used?
I have the source code used on jurassicsystems.com. I would absolutely kill to have a tweaked version of this system act as my password entry screen. It is literally something Ive wanted to have done for ages, and this emulation finally means it may be possible.
I have configured form based JAAS in my app. Basically, in web.xml I have declared security constraints on certain jsp page, declared specific roles, login and error pages. So, my login form is:
BaseClass b = new InheritedClassA(); DataA dataA = b.getDataA(); //returns the DataA field if it's a data member of the inherited class, otherwise null
I know I could do something like this:
abstract class BaseClass { public DataA getDataA() { return null; } public DataB getDataB() { return null;
[Code] ...
and override getters as necessary in the inherited classes:
But this introduces an awful lot of boilerplate code, especially in the BaseClass class. In my current plans, there could easily be over a hundred different Data classes, and I would have to write a method that simply returns null for each.
I read about the @Inject annotation and reflection. Is it possible to reduce or eliminate the boilerplate code with these tricks, possibly by putting new methods into the classes?
I didn't work a lot with Reflection and now I'm having troubles by writing a method to set a field value of an unknown type.
I wrote a little example program to show, where I cannot find a solution. I explain the problem in the following points:
- there is a class with 4 fields, which 2 are of type primitive int and 2 are Integer - at line 27 is set the name of the field I want to modify - if is set field1 or field2 (of type int) there is no problem. In this case the 'case "int"' of the following switch is executed - if is set field3 or field4 (of type Integer) is executed the 'default' case of the following switch and at line 56 is thrown the cast exception that "Cannot cast java.lang.String to java.lang.Integer"
import java.lang.reflect.Field;
public class TestClass { public int field1 = 1; public int field2 = 2; public Integer field3 = new Integer(3); public Integer field4 = new Integer("4");
But when i try to open it i get the message: Application Blocked. Click for details.
- The list i see doesn't work - If i click Ignore nothing happens - If i click reload nothing happens
When i read and search the net i have to change my java security settings. The security setting are HIGH and i cannot change that.But i can fill in an Exception Site List...The hello.html file is on my NAS : file:///X:/Lantronix/hello.html..I fill this in the exception Site list -> I get a message that it is a security risk to add this location.
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.
Can we use EJB @Asynchronous annotation in distribute environment. I know we can use it but I want to know its Advisable or not. Because It's not advisable to manage user thread in Distribute environment like EJB container .Earlier if we want to make Asyn call then we use JMS. But now they added @Asynchronous annotation with Future Class to achieve the same result.
I have a major problem. the text size is like 6 or 8 pt font and I can't read it. I'm trying to run a downloaded exe program which uses the jre7 which I had to download beforehand. the font size stays at 6 or 8 even if I try to change it in windows settings. it's a high res monitor on a lenovo yoga laptop. is there a way for me to edit the java code and manually change the font size?
For some reasons my servlet doGet method is being called twice. I am calling servlet from the index.jsp page by using servlet annotation "/Profile/*. And it passes path as localhost:1919/Profile/username to getPost method.
My profile.jsp page uses java code to show all the data (and it shows it perfectly). But then I click link to the next update_profile.jsp page. Just simple link. Then I realize that on this step for strange reasons for me doGet method from Profile servlet is called the second time. And passes path as localhost:1919/Profile/update_profile.jsp
And update_profile.jsp file is just simple file with <h1>hello</h1> output. I have looked in the internet that this might be a mapping problem or my css relative path connection problem. As you see I have commented out my css connection and problem still exists. My run output in the IDE also shows these errors:
org.apache.jasper.JasperException: An exception occurred processing JSP page /profile.jsp at line 27
Stacktrace: at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:335) at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
[Code] .....
And my tomcat run configuration settings: [URL] .... and [URL] ....
I've already tested with disabled="false", too, but only the Session attribute is saved as NULL, though it appears in the form field. The other fields are saved properly.
What I am trying to do is save the the content drawn to my screen as an image. The following code is my render method and although I know how to use it, I don't fully understand the classes and how they work with is making this difficult.
public void render() { BufferStrategy bs = this.getBufferStrategy(); if (bs == null) { createBufferStrategy(3); return;
Is there any way to save variables while I'm using applet as single runnable .jar file?
For example if I start app first time some variable has value of 100. While using app it changes to 200. After closing app it disapear and next run gives me 100 again instead of 200. Is there any way to save that 200?
I'm trying to save to a table in a database that has only 2 fields, (id, nota) . I want to save the data several times just to click on "save" one look . The code that I have is this:
So I'm still learning how to save data using Java. I know that saving data is extremely important when it comes to creating video games.
What I have here is this simple program.
Java Code:
import java.util.*; import java.io.*; import java.lang.*; public class Character { private Formatter x; private int roomNum; private boolean[] visited = new boolean[10];
[Code]...
I'm trying to make sure that after I exit the program, joe starts in room 4, not room 1, and that he has visited rooms 1, 2, 3, 4, and 10. I have the save data created, but how do I save an array of boolean values?
recently I was playing a lot in Eclipse, testing util classes, randomisation etc. But always when I wanted to keep something for future reference, I had to either comment it out or start a whole new class, copy all the code and change just that little thing I was testing.I was wondering if it's possible to actually save just the 'current state' of the code. The idea came back from my days when I was working with 3ds max and I saved the scene periodically so I could revert back anytime I messed up something.
I was looking into Object Serialisation and JUnit testing for this purpose, but that's just too complicated. Is there a way in Java (Eclipse) to accomplish such thing?
I am trying to save the data a person enters to a file. See code below. It is compiling however the file created only shows largest =89, i want the file to show all the data a person enters.
import java.util.*; import java.io.*; public class LargerOfThree3{ public static void main(String args[]){ Scanner in = new Scanner(System.in);
