Thank you Tim for your help! I tried your suggestion but unfortunately,
SQL connection blocks the JProgressBar or any GUI. According to
my best knowledge, swingworker should fix it. I do not have experience
in swingworker. Could someone help me how I should use it in the above-
I would like to show a running process stage with a pop-up frame. The created a javax.swing.JFrame is:
The input String text is produced in a for loop like:
When I use this.setLocationByPlatform(true) in the Frame it will produce the correct Frame but I will get the error after the first step of the loop:
java.awt.IllegalComponentStateException: The window is showing on screen.
If I skip the setLocationByPlatform it will produce an empty Frame. Could someone suggest me a way for getting one Frame where the string will change according to the loop?
I have a java program which can download data from MySQL and write them in a chosen file format e.g. TXT. Here is the txt writer:
This writer is called in a JCombobox actionperformed as in an other java file:
I would like to show the progress of the writer with JprogrssBar, but I do not know how should
I measure the writer progress (i.e. the integer value for set the JprogressBar value). Could someone suggest me a solution?
I use NetBeans 8.1 for developing a Java project. I use InMemoryJavaCompiler in two classes. When I run the project under NetBeans it works correctly. I created a .jar file from the project with When I try to run the .jar file the program does not work. It generates a NullPointerException regarding InMemoryJavaCompiler:
I tried to add and move up the from in NetBeans and built again the program but it doses not help. On my computer, the java path is.
Could someone suggest me a solution to fix the nullpointerexception error?
Here is the ComPiler.java class where I used InMemoryJavaCompiler:
and here is the part of the code where I called the ComPiler Class:
I receive the following error:
I wrote a Java project in NetBeans IDE. This project contains two abstract Java Classes which are compiled with InMemoryJavaCompiler.
When I run the code in the IDE it works. I produced a .jar file from this project with build packing and clear and build.
When I run the .jar file I receive a NullPointerException error when I use the abstract classes.
Could someone suggest some solution?
Thank you for your help in advance!