jtextcomponent

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . I want to create a JTextArea which looks like JTextArea, acts like JTextArea, responds like JTextArea, speaks like JTextArea, moves like JTextArea, etc, but is not JTextArea. To make it short, I'd like to create

问题 The following method extends a JFrame, but I need a swing textbox inside it to receive double values and store them in a variable. the textbox must be added to the container. public class myClass extends JFrame{ Container container; container = getContentPane(); //Item label JLabel labelText = new JLabel(); ... labelText.setText ("Item:"); container.add( labelText ); //Item name: Textbox //code to make a textbox, add it to the container, and store the value in a variable goes here 回答1: Use a

问题 My situation is that i have to scan a qrcode in a textfield that i have to parse that comes with non-printables characters (btw it's always the same character) that never comes in the same position. I try to get this code with no success this textfield.getText() failure textfield.getDocument().getText(0,textfield.getDocument().getLength()) failure I have success using KeyBindings and then replace as @trashgod comments with glyph. Example: public class Test { private JPanel panel; private

问题 I've done a ton of research regarding this issue, but I haven't had any luck with anything I've found. It's a major roadblock in the application I'm developing. My application has a Form, which contains a JScrollPane. After adding a JTextArea inside the JScrollPane, I see that when I run the program and type in the JTextArea, it is accompanied by scrollbars when the JTextArea overflows with text. Even if I set the scrollbar policy to 'NEVER', it simply overflows and moves the current text up.

问题 Referring to my previous question, I want to ask that how can I read a file in different folder into the similar .jar . The folder hierarchy and details are provided with that question. My main problem is with a line of code: JTextPane textPane = ... //general initialization textPane.setPage("path/file.html"); The problem is I have to keep that file.html in my .jar. Moreover I would like to know suggestions on this topic. 回答1: For loading resources in a JAR, you can use Class.getResource() .

问题 I am looking for a solution where text and images are dynamically generated based on user UI content, and then printed on a simple "one click" basis. My intention thus far (from having done a little research) is to create a JTextComponent who's content will be generated based on the user's input (indirectly) and simply print the JTextComponent. This JTextComponent will never be displayed in the UI anywhere, only printed. So far I set up a temporary test using; JTextArea report = new JTextArea

问题 i am trying to trigger key released event in java swing. txtEmailId.addKeyListener(new KeyAdapter() { // override keyReleased listener on the Email TextField @Override public void keyReleased(KeyEvent e) { System.out.println("ok"); } }); above code running successfully now i want to call this keyReleased event after txtEmailId.setText("hello"); manually how it is possible? 回答1: Instead of KeyAdapter use DocumentListener. Try next example: import javax.swing.JFrame; import javax.swing

问题 I am using both JLabel s and JTextField s, and need to be able to truncate my doubles to two decimal places when they are displayed by the application. How can I perform this truncation, preferably without switching to JFormattedTextField s? 回答1: You can use DecimalFormat class. Here is an explanation 回答2: Prefer the Swing JFormattedTextField instead; see the Java Tutorial. 来源： https://stackoverflow.com/questions/2525492/how-can-i-output-only-a-certain-number-of-digits-after-a-decimal-place

问题 I want to change the ActionMap of Swing JTextFields in my entire Application by replacing a few actions by my custom implmentations. For an explanation why you can refer to the following post: How do I make the caret of a JTextComponent skip selected text? This works well if I do this: ActionMap map = (ActionMap)UIManager.get("TextField.actionMap"); map.put(DefaultEditorKit.backwardAction, new MyCustomAction()); The only remaining problem now is that so far I have only gotten this to work,

问题 I need to create a class derived from JTextComponent (from JTextPane , actually) in which at least one of the default key mappings is changed. That is, in my special JTextPane, I want the ">" keystroke to perform an action and NOT add that character to the text pane as, by default all printable typed characters are treated. To defeat the normal behavior, there are the following APIs: JTextComponent.getKeymap() Keymap.addActionForKeyStroke() JTextComponent.setKeymap() However, I find that