jlabel | 易学教程

Adding label and text box control to GUI

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问题 I would like to know what code to insert and where to add a simple label that can just say the word "Label" and a input text box that I can enter a number. public CalculateDimensions() { JTabbedPane Tab = new JTabbedPane(); JPanel jplInnerPanel1 = createInnerPanel("First Tab"); Tab.addTab("One", jplInnerPanel1); Tab.setSelectedIndex(0); JPanel jplInnerPanel2 = createInnerPanel("Second Tab"); Tab.addTab("Two", jplInnerPanel2); JPanel jplInnerPanel3 = createInnerPanel("Third Tab"); Tab.addTab(

Why instance of JLabel shows only 8 lines?

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问题 This question was migrated from Code Review Stack Exchange because it can be answered on Stack Overflow. Migrated 8 years ago . Here's the code snippet: import java.awt.BorderLayout; import java.awt.HeadlessException; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing

Table cells with HTML strings inconsistently rendered as multiline

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Cells of one of columns in my table are HTML strings. HTML is used to provide some color indication. Usually the width of the column is enough to contain the whole string. But when it is not enough then the string is nicely cut on a word boundary. This is the desired behavior. The default cell renderer is used. I noticed that occasionally, some interaction with the table triggers the rendererer to wrap the string. As I understand, wrapping the HTML string is a normal behavior of JLabel from which DefaultTableCellRenderer derives. What is not clear is why is this behavior so inconsistent and

Set dynamic JLabel text in a JDialog by timer

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问题 Im trying to make a JDialog that will show the user a dynamic message on a JLabel. The message should be a count from 1 to 10 (and it should be changing a number every second). the thing is , when im debugging it - it's stops right after the "dia.setVisible(true);" , and will not proceed unless i will close the JDialog . is there any possible way of fixing it? Thanks. Take a look at the code : @Override public void run() { dia = new JDialog(parentDialog, true); dia.setLocationRelativeTo

Why do cell renderers often extend JLabel?

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I noticed this is common. For example DefaultListCellRenderer, DefaultTableCellRenderer, and DefaultTreeCellRenderer all use it. Also a lot of the custom cell renderers I see online use this as well. I want to use a custom TableCellRenderer in my code, but I'm confused about whether I really need to subclass JLabel. What's the benefit of subclassing JLabel? camickr The API for the DefaultTableCellRenderer states: The table class defines a single cell renderer and uses it as a as a rubber-stamp for rendering all cells in the table; it renders the first cell, changes the contents of that cell

Small GUI issue I cannot fix. JTextFields

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问题 Small error I can't manage to do. So right now my program GUI looks like this: Now there is a TextField under the 'Mark' column were the user can input their data. I also want the same for the weight section were I want to insert a TextField right under 'Weight' column. However when I try and put in a TextField, both the the Textfields turn like this when the window is small: and this when the window is enlarged: How can I make it so that there is a textfield under Mark AND Weight? Code:

How can I set a JLabel's background and border the same as a table header?

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问题 I want to recreate a table header looks using JLabel . The look and feel of the JLabel needs to be exactly like the JTableHeader would be, specified by the system. This is what I have tried so far: JLabel header = new JLabel("Title"); header.setOpaque(true); header.setBackground(UIManager.getColor(new JTableHeader().getBackground())); header.setBorder(UIManager.getBorder(new JTableHeader().getBorder())); But, the UIManager returns null for the color and border. Any ideas? This is how I set

MySQL blob to Netbeans JLabel

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问题 I have a blob type field in my MySQL, I want to put the data in this field in JLabel as Icon. For example this JLabel will be user's Profile Picture in my form. I used this codes but nothing happens and also I want to fix to width or fix any image size in my jlabel DefaultTableModel pic = MyDB.DataTable("SELECT `Picture` FROM `photo` WHERE `Employee ID` = 'EQ0103'"); if (pic.getRowCount() > 0){ Blob blob = pic.getBlob(1); byte[] image1 = blob.getBytes(1, ALLBITS); ImageIcon image = new

for loop issue when cycling through images for Jlabel with button click

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问题 in a java aplication I have a Jlabel which i want to assign a new image to every time i click a button, using a for loop i can get it to just display the last image skipping all in between images, i know there is a error in my logic here maybe i should not be using a for loop?? any advice private String imageList[]; ImageIcon image; imageList = new String[] {"src\\Tour_Eiffel_Wikimedia_Commons.jpg","src\\Ben.jpg", "src\\Rio.jpg", "src\\Liberty.jpg", "src\\Pyramid.jpg"}; //constructor setting

JLabel and JLayeredPane - How to display an image over another image?

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I try to create a little game in java but I'm in trouble. When I draw a map, I'm not able to display the characters without overwrite the titlesets of the squares. My goal is to be able to display many pictures on the same square (like the titleset of the grass, the character and a tree), so I have to deal with the transparency of my pictures (this is not the problem) and the layer (it is the problem). So how can I display an image on another image? How can I explain to java that I need to display this image on or under another image? This is my source code. I don't know is that can help you.