Questions tagged as 'java'

Tagged questions
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Error in running Eclipse

I downloaded Eclipse, installed and performed the entire procedure correctly. As soon as I finished installing and restarting the PC, I went to run the program and this error appeared: Eclipse did not open.     
asked by 10.05.2015 / 21:24
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How do three buttons work as radio button?

I would like to know how to make three buttons work as a "radio button". When you click the button it changes color and executes command, clicking another button changes color and another normal return.     
asked by 18.02.2015 / 14:23
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How to display a jPanel when I position the mouse over a certain region?

Hello, I would like to know how I can create a Java algorithm to display a certain Panel within my JFrame Form, so that the user positions the mouse cursor over a certain preprogrammed region, which will be a specific corner of Form JFrame!     
asked by 07.03.2015 / 04:29
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Transfer an image from one imageview to another imageview in another fragment

I have a grid view that displays images of a server, when I click on the image I have to reload the image again a few more details, I wanted instead to have to download the image again, ie I wanted to pass the imageview image already loaded into...
asked by 05.03.2015 / 03:28
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Floating-point format in java

Personal how do I read a floating point with a specified decimals limit after the comma? For example, read the value 3.14? Note: I know to format the value of a variable with the decimal format, but I need to receive values with only two deci...
asked by 30.06.2015 / 20:36
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List method for jComboBox returning null

Hello! I am having trouble listing data from my DB in a jComboBox. The method I use is as follows: public void setComboBoxSetorChamado(List<Setor>setores){ idSetor = new int[setores.size()+1]; int i = 0; //jComboBoxSetorChama...
asked by 10.02.2015 / 14:10
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Post too large - GlassFish

I am performing a search routine on all occurrences that have already been completed, but when I enter some and select the attachment my glassfish returns the following message java.lang.IllegalStateException: Post too large Has anyone ev...
asked by 04.02.2015 / 15:17
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Allow the user to run the program step by step

Hello, I'm in the development part of my TCC that consists of a graphing support tool (more precisely some algorithms such as Traveling Clerk, Minimum Generating Tree, etc ...) and would like to allow the user to execute the program in step-by-st...
asked by 08.01.2015 / 22:11
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Populate ProgressBar in JavaFX

I'm seeing JavaFX, I'm having doubts about using ProgressBar. How do I populate the ProgressBar while another parallel operation occurs.?     
asked by 02.02.2015 / 15:57
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How to Apply Loading Large Bitmaps Efficiently

I'm using ImageView to load images since I find memory mismatch I found this method because I can not use it. I wanted a brief explanation where I change the variables available at link Read Bitmap Dimensions and Type BitmapFactory.Opt...
asked by 02.02.2015 / 13:44