jlabel | 易学教程

Can we combine 2 font styles together in Java?

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问题 I am trying to change the font of a JLabel so it is both BOLD and ITALIC , but it seems there's no static field defined to do so. How can we combine two styles so we can have a bold, italic font? This code will do it with just bold by using the static field BOLD , but there's no field defined for both bold and italic: Font font = new Font("Verdana", Font.BOLD, 12); label = new JLabel ("New Image") ; label.setFont(font); label.setForeground(Color.Gray.darker()); 回答1: Yes, the style parameter

How to align JLabel to the left of the JPanel?

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I want to align my JLabel to the left. String lText = "<html>mybook</html>"; JLabel label = new JLabel(lText); label.setBorder(new EmptyBorder(25,0,25,500)); I tried to do it using EmptyBorder but it isnt aligning properly. I am using FlowLayout FlowLayout uses CENTER alignment by default. Try using LEFT alignment for your JLabel JPanel container myJPanel.setLayout(new FlowLayout(FlowLayout.LEFT)); You might wish to set the JLabel's horizontalAlignment property. One way is via its constructor. Try: JLabel label = new JLabel(lText

How to make JLabels start on the next line

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JPanel pMeasure = new JPanel(); .... JLabel economy = new JLabel("Economy"); JLabel regularity = new JLabel("Regularity"); pMeasure.add(economy); pMeasure.add(regularity); ... When I run the code above I get this output: Economy Regularity How can I get this output, where each JLabel starts on a new line? Thanks Economy Regularity John Kugelman supports Monica You'll want to play around with layout managers to control the positioning and sizing of the controls in your JPanel . Layout managers are responsible for placing controls, determining where they go, how big they are, how much space is

How to center the text in a JLabel?

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问题 despite many tries I can't get the result that I would like to see - text centered within the JLabel and the JLabel somewhat centered in the BorderLayout. I said "somewhat" because there should be also another label "status" in the bottom-right corner of the window. Here the bit of code responsible for that: setLayout(new BorderLayout()); JPanel area = new JPanel(); JLabel text = new JLabel( "<html>In early March, the city of Topeka," + " Kansas, temporarily changed its name to Google..."

Java Swing JLabel, HTML and custom fonts

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In our Java Swing application, we're loading a custom font and adding it to a JLabel : try { this.font = Font.createFont(Font.TRUETYPE_FONT, new File("resources/fonts/ourcoolfont.ttf")).deriveFont(16f); } catch (Exception e) { this.font = new Font("Arial", Font.PLAIN, 16); } this.label.setFont(this.font); Easy and worked fine on 3 different systems. Until someone else tried to run it. The font was loaded (as we're also using on some other Swing elements), but not used in the JLabel . After some searching, I've found out you can't use both HTML and a loaded font. For some reasons it works on my

Adding jlabel to a jframe using components

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问题 I have 2 classes, My main class creates a frame and I want another class to add content to it. A bit of reading arroudn told me I should use components to do this however when I run my code the frame is empty. public static void main(String[] args) { // create frame JFrame frame = new JFrame(); final int FRAME_WIDTH = 800; final int FRAME_HEIGHT = 600; // set frame attributes frame.setSize(FRAME_WIDTH, FRAME_HEIGHT); frame.setTitle("My Frame"); frame.setVisible(true); Component1 Com = new

Add a picture to a JFrame

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问题 All I am trying to do is add a picture to a JFrame . I am really confused and don't really understand... I have looked up every possible question on this site, looked on other java stuff, such as forums. I tried my best and now I must ask guys for help. I hope the code is clean and easy to read. Thanks for the help. package zeus; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.ImageIcon; public class Main extends JFrame{ public static final int WIDTH = 800; public

Java - Change JLabel

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问题 I have a class of buttons called Keys.java which returns a panel of buttons to the class called Control.java. I have a JLabel in Control.java, but what I want to do is change a JLabel when a button is pressed. How would you go about doing this? I have tried setting a string in Keys.java which changes based on the button and then setting the JLabel's text equal to the string but it doesn't seem to work. Any thoughts on how to achieve this? 回答1: It may be that you are updating the wrong string

jLabel won't show

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问题 I am slightly confused, I have a jFrame of which I have made in Netbeans. This jFrame has a jLabel, of which is set to setVisible(false); from the beginning. Whenever a specific method is called, I then set the jLabel to setVisible(true); and then use a timer to set it to false again after 2 seconds. Apparently it won't work and I am unable to figure out why. I am aware of the repaint(); method, but can figure out how to make that work either. I know the actual method for setting the

How do I get a JLabel to show over a JButton?

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问题 I have a JLabel that is ontop of a JButton, but it will not show up ontop. When the code for the JButton is commented out, the JLabel is shown, meaning that it is there but is on the bottom. Is there a way to show the JLabel ontop of the JButton? Any help would be awesome. Thank you! import java.awt.*; import javax.swing.*; public class TestingLabelsOverButtons extends JFrame { public static void main (String []args) { new TestingLabelsOverButtons(); } public TestingLabelsOverButtons() {