I have been programming in Java for years and I know how to do things far more complex than this, but I can't figure out for the life of me how to do this. Believe it or not, I couldn't find anywhere on the web that could tell me how either.
I'm displaying a string that's stored in a variable and I need to be able to display a less than symbol/ store it in the string variable. So far, the rest of the string prints, just omitting the less than symbol. If it matters, I'm displaying it in a JLabel. Also, I've tried using unicode and that didn't work. Thanks!
JLabel and many other Swing components support rendering HTML, so if the component thinks your text is HTML, you need to escape < as <.
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I'm working currently on java project that uses Arabic Language, I found difficulty in writing in Arabic as shown in the image:
I wrote Arabic without any edit.
I added a reverse() method, it worked good but the letters aren't attached to each other, they're separate.
StringBuilder input = new StringBuilder();
input.append(jTextField2.getText());
input = input.reverse();
jTextField1.setText(input.toString());
I use site the flip the text, it didn't work as well.
I use the same site, but with jLabel it worked.
other method I use, but didn't work:
Try Orientation jTextField1.applyComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
Change the IDE encoding to URT-8 (I'm using Netbeans-JDK8).
Can anyone help me how to write & print Arabic in java correctly?
Please refer to this question -
Forcing RTL order in a JTextArea
Here is a sugestion to start the string with the character \u202e to force the text to be RTL.
Also i think it is not good approach to reverse the string, as it is not good user experience when the user do "copy paste", as he will copy reversed string...
A string entirely composed of characters from the Arabic block should render with correct RTL presentation without any directionality control characters. If it does not, it is likely that you have a problem with your operating system configuration, not with your Java code. Reversing the string is a terrible idea. Trying for visual-order rendering is going to get all messed up.
I am using a Vaadin 10 (Flow) Grid to stream data to new rows, and I am trying to add a custom image icon to my TemplateRenderer.
I have a TemplateRenderer setup like this:
TemplateRenderer<TradeUni> sizee = TemplateRenderer.<TradeUni>
of("<div class$=\"[[item.class]]\">[[item.size]]</div>")
.withProperty("class", cssClassProvider)
.withProperty("size", TradeUni::getSize);
Which displays my numbers correctly in the grid cell like this:
I would like to have my image rendered inside the same cell, to the left of the numbers.
This was my (very crude) attempt to import it using html:
TemplateRenderer<TradeUni> sizee = TemplateRenderer.<TradeUni>
of("<div class$=\"[[item.class]]\"><img src=\"i.imgur.com/3LQBglR.png\">[[item.size]]</div>")
.withProperty("class", cssClassProvider)
.withProperty("size", TradeUni::getSize);
Which give's me this:
I think that I might have to wrap the image and numbers into a HorizontalLayout with the image being a separate component - I think I could handle that, but I am unsure of how to do the actual rendering of the image. I can probably accomplish it simply with the internal Vaadin Icons set, but I need to use my own little images.. all icons that I am going to use will be at or less than 25 x 25px.
Thank you so much in advance!
I think you're on the right track, but there's one small detail that causes you trouble. The URL i.imgur.com/3LQBglR.png doesn't define a protocol, which means that the entire string will be treated as a path relative to the location of the hosting page. It will thus try to find a file in a directory named i.imgur.com on your own server.
To fix this, you need to also include the protocol in the image URL, i.e. https://i.imgur.com/3LQBglR.png.
I can also offer a small suggestion for how to make the code easier to read. HTML also supports using ' for enclosing attribute values. This is more convenient to use from Java string since you don't need to use \ to escape ' characters. Your template string could thus be "<div class$='[[item.class]]'><img src='https://i.imgur.com/3LQBglR.png'>[[item.size]]</div>".
I'm building the keyboard of a calculator application for Android.
I'm using the unicode but the application did not display the button "erase to left"
static String[][] screen2L ={{"sin","asin","sinh","asinh","sind","asind","\u232B","AC"},
{"cos","acos","cosh","acosh","cosd","acosd","log2","gamma"},
{"tan","atan","tanh","atanh","tand","atand","log10","ln"}};
thanks
Unicode characters are not supported in all fonts. Check here to see the supported fonts for \u232B
Instead of using the character, make an image of the character and set it as the buttons background. A post that can help with that has already been answered here: How to make button with custom background image...
Also, as for using strings in java to print in your GUI, it's better practice to use xml for this. The buttons individual values would be stored to the app instead of having to assign them every time the app is run. I would write out instructions on how this is done, but the android developers guide that can be found here gives much better instructions than I could.
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
How do I write superscript word for checkbox text in java?
So I have this very simple program that basically consists of a GUI with a few text fields and a button.
The idea is that the user enters numbers into three fields and presses the button. Then what happens is a few mathematical procedures are carried out in the background, and the resuling answer is presented in a fourth text field.
Now, this does the job, but the formatting looks awful. At the very least, I would like to have part of the output superscripted. I have next to no experience with these things, but thought I would be able to get the hang of this on my own, but I'm stuck. I think I need to use AttributedString and possibly Font, but I can't get anything to work. And I've found no tutorials.
Does anyone have any quick pointers? That'd be most helpful!
Do you need the output field to be editable? If not, try using a JLabel with HTML code. Something like:
jLabel4.setText("<html>ax<sup>2</sup>+bx+c</html>");
You can add a border to that JLabel to make it look like a text field.
Why not use other swing components that support HTML to display the answer like JLabel. If you use a JLabel for instance you can use inline html to format your answer
The reasons you are having difficulty has to do with the lack of a default typsetting system. Font selection and such typically provides a very limited means to do proper math typesetting (which is a specialized subset of general typesetting).
I don't know of any math specific typesetting already built-in to the Java libraries, that said, perhaps you can integrate the ExTex project into your Java components or roll your own solution using the 2d API (look at baseline offsetting).
Other alternatives are to generate a graphic, and display it's rendered image. If the display is static, this might be a much easier choice.
Normally a left-orientated JLabel shortens text at the right by adding periods, e.g. Hello wo.... Anyone knows an JComponent (TableCellRenderer is not sufficient) which can shorten text in the middle (Hel...rld), e.g. useful for displaying file names?
The LeftDotRenderer displays the dots on the left. I know its not what you asked for, but you might be able to use the concepts in the code to create your own.