Right now the label is on top of the text box. I would like to be able to set the location of the text box and label so that the label is to the left of the text box.
this.container = this.getContentPane();
this.container.setLayout(new FlowLayout());
this.searchText = new JLabel("Enter text to be searched: ");
this.charText = new JLabel("Enter a character: ");
this.target = new JTextArea(3,30);
Use a JPanel with the FlowLayout.
JPanel myPanel = new JPanel();
myPanel.add(searchText);
myPanel.add(target);
container.add(myPanel,FlowLayout.LEFT);
Note you should create two panels if you want two labels and two text areas to be displayed in the fashion that you want. For more information on FlowLayout:
Flow Layout
In any case you should use an editor for more advance positioning.
You can use a GridLayout like this :
this.container = new JPanel(new GridLayout(1, 2) );
this.searchText = new JLabel("Enter text to be searched: ");
this.charText = new JLabel("Enter a character: ");
this.target = new JTextArea(3,30);
container.add(searchText);
container.add(target);
Related
Following Java's official tutorial:(https://docs.oracle.com/javase/tutorial/uiswing/components/table.html)
However, there is no source code for this, picture:
So I did it myself. My stupid idea is that there are 4 areas in here. So BorderLayout does not work well for me. Because I already tried BorderLayout.PAGE_END. It's not working. So I make one panel consolidate all 3 panels except the first scroll pane. It's inefficient, but works.
But now the issue is when I drag(stretch) the frame, the last text-area not stretched, but the second last selection option is stretched.
How to make the last text area stretch when I resize the frame?
Below is my code:
JRadioButton mulintselRadioButton = new JRadioButton("Multiple Interval Selection");
JRadioButton singleselRadioButton = new JRadioButton("Single Selection");
JRadioButton singleIIntSelRadioButton = new JRadioButton("Single Interval Selection");
JCheckBox rowSelection = new JCheckBox("Row Selection");
JCheckBox columnSelection = new JCheckBox("Column Selection");
JCheckBox cellSelection = new JCheckBox("cell Selection");
ButtonGroup G = new ButtonGroup();
ButtonGroup GButton = new ButtonGroup();
GButton.add(rowSelection);
GButton.add(columnSelection);
GButton.add(cellSelection);
G.add(mulintselRadioButton);
G.add(singleIIntSelRadioButton);
G.add(singleselRadioButton);
JTable table = new JTable(data, columnNames);
TableColumn column = null;
table.setPreferredScrollableViewportSize(new Dimension(400,70));
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
table.setFillsViewportHeight(true);
JScrollPane scrollPane = new JScrollPane(table);
JPanel selectionMode = new JPanel(new GridLayout(4,1));
JPanel selectionOption = new JPanel(new GridLayout(4,1));
JPanel textAreaPanel = new JPanel(new GridLayout(1,1));
JPanel consolidatedPanel = new JPanel(new BorderLayout());
JLabel selcttionModeTitle = new JLabel("Selection Mode");
JLabel selcttionOptionTitle = new JLabel("Selection Options");
JTextArea textArea = new JTextArea("thsisaskjhkjk shial");
textAreaPanel.add(textArea);
selectionMode.add(selcttionModeTitle);
selectionMode.add(singleIIntSelRadioButton);
selectionMode.add(singleselRadioButton);
selectionMode.add(mulintselRadioButton);
selectionOption.add(selcttionOptionTitle);
selectionOption.add(rowSelection);
selectionOption.add(columnSelection);
selectionOption.add(cellSelection);
textArea.setText("hsknd hkcjshksdjl sldh RadioButton mulintselRadioButton = new JRadioButton(\"Multiple Interval Selection\");\n" +
" JRadioButton singleselRadioButton = new JRadioButton(\"Single Selection\");\n" +
" JRadioButton singleIIntSelRadioButton = new JRadioButton(\"Single Interval Selection\");\n" +
" JCheckBox rowSelection = new JCheckBox ");
add(scrollPane,BorderLayout.NORTH);
consolidatedPanel.add(selectionMode,BorderLayout.NORTH);
consolidatedPanel.add(selectionOption,BorderLayout.CENTER);
consolidatedPanel.add(textAreaPanel,BorderLayout.SOUTH);
add(consolidatedPanel);
Following the Java's official tutorial (the link of which you have posted in your question), one can read that it says that you can consult the example index... If you follow this link you can find a table which gives you the link to the file you are searching for. Specifically the code you are looking for is in the following link:
https://docs.oracle.com/javase/tutorial/uiswing/examples/components/TableSelectionDemoProject/src/components/TableSelectionDemo.java
As for your question, you can use a BoxLayout to achieve what you are asking, exactly as the TableSelectionDemo does. The result can strech the table and the text area, but not the middle section.
The following program segment generates the output within the red box as shown in the figure:
st = c.con.createStatement();
rs = st.executeQuery("SELECT itemName, itemMaxQty, itemImage FROM item");
while(rs.next()){
JPanel itemPanel = new JPanel();
itemPanel.setLayout(new BoxLayout(itemPanel, BoxLayout.PAGE_AXIS));
JPanel componentPanel = new JPanel();
componentPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
JLabel itemName = new JLabel(rs.getString(1));
ImageIcon itemImage = new ImageIcon(rs.getString(3));
Image scaleImage = itemImage.getImage().getScaledInstance(120, 120, Image.SCALE_SMOOTH);
JLabel imageHolder = new JLabel(new ImageIcon(scaleImage));
JSpinner quantityField = new JSpinner();
Dimension d = quantityField.getPreferredSize();
d.width = 60;
d.height = 30;
quantityField.setPreferredSize(d);
componentPanel.add(imageHolder);
componentPanel.add(quantityField);
itemPanel.add(componentPanel);
itemPanel.add(itemName);
add(itemPanel);
}
I know that probably some parts of the code are not the best way to do it, but that is what I can do for now in line with the knowledge that I have.
I actually have two problems here.
First, I don’t understand why the itemName's value (Cupcake Stand, chafers, etc) are centred.
1. How do I make it left centred such that it is aligned with its corresponding picture on top?
Second, as you can see, there is a large space in between the componentPanel (the picture and the JSpinner) and the itemName. I think it’s because the height allotted for itemName is the same as that for the componentPanel. So
2. How do I make itemName immediately below the componentPanel?
You can do that by changing the LayoutManager of itemPanel to BorderLayout (with that line itemPanel.setLayout(new BorderLayout());), and add the component to itemPanel in that way:
itemPanel.add(componentPanel, BorderLayout.CENTER);
itemPanel.add(itemName, BorderLayout.SOUTH);
I am creating a messaging program that has multiple chats. On the side of the chat window there is a JPanel containing a List Array of all the buttons to switch chats.I am having trouble getting all the buttons in the side panel to be the same width, no matter what they contain. But whatever I try doesn't seem to work and I am looking for some help. Please can you explain what the code does and how it can be used so I can learn it for next time. Sorry if the comments aren't the best it's a work in progress as I wait till code works before adding detailed comments otherwise I am constantly changing them. :(
This is what it looks like without any chats:
This is with multiple chats and you can see the width variation
Here is the code that is run when a new user is added:
public void newUser() {
JPanel dialogue = new JPanel();
dialogue.setLayout(new BoxLayout(dialogue, BoxLayout.Y_AXIS));
//Creating/adding dialogue components
JLabel Enter_ip = new JLabel("Enter the ip address");
JTextField Get_ip = new JTextField("");
dialogue.add(Enter_ip);
dialogue.add(Get_ip);
dialogue.add(Box.createHorizontalStrut(15));
JLabel Enter_name = new JLabel("Enter the user's name");
JTextField Get_name = new JTextField("");
dialogue.add(Enter_name);
dialogue.add(Get_name);
//Creating the dialogue box
JOptionPane.showConfirmDialog(null, dialogue, "New User", JOptionPane.OK_CANCEL_OPTION);
//Getting data from dialogue box
String ip = Get_ip.getText();
String name = Get_name.getText();
//Try connecting to other user here
//Adding user message data
int size = Users_Messages_Data.size();
Users_Messages_Data.add(new ArrayList());//New user
Users_Messages_Data.get(size).add(new ArrayList());//Messages
Users_Messages_Data.get(size).add(new ArrayList());//Details
Users_Messages_Data.get(size).get(1).add(name);
Users_Messages_Data.get(size).get(1).add(ip);
Users_Messages_Data.get(size).get(1).add("port number");
//adds new UserButton
int temp = users.size();
users.add(new JButton(Users_Messages_Data.get(size).get(1).get(0)));
users.get(temp).addActionListener(this);
users.get(temp).setSize(new Dimension(500, 500));
SelectUser.add(users.get(temp), gbc);
Messaging.revalidate();
pack();
}
and here is the initialisation method:
public void MessagingGUI() {
//Creates JFrame and pane
Messaging = new JFrame();
Container pane = getContentPane();
JLabel info = new JLabel("29/07/2016 15:36");
//Creates user chats panel
SelectUser = new JPanel(new GridBagLayout());
gbc = new GridBagConstraints();
gbc.weightx = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.gridwidth = GridBagConstraints.REMAINDER;
SelectUser.setLayout(new BoxLayout(SelectUser, BoxLayout.Y_AXIS));
SelectUser.setSize(new Dimension(500, 500));
//Adds different chats
users = new ArrayList<JButton>();
int x;
for (x = 0; x < Users_Messages_Data.size(); x++) {
users.add(new JButton(Users_Messages_Data.get(x).get(1).get(0)));
users.get(x).addActionListener(this);
SelectUser.add(users.get(x), gbc);
}
JButton newUser = new JButton("+");
newUser.addActionListener(this);
SelectUser.add(newUser);
JScrollPane UserScroll = new JScrollPane(SelectUser,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
//Creates messages feed
JPanel Messages = new JPanel();
Messages.setLayout(new BoxLayout(Messages, BoxLayout.Y_AXIS));
AllMessages = new JTextArea(10, 30);
AllMessages.setBackground(Color.WHITE);
AllMessages.setEditable(false);
AllMessages.setBorder(BorderFactory.createLineBorder(Color.BLUE, 1));
JScrollPane MessageScroll = new JScrollPane(AllMessages,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
//Creates user text entry box
UserText = new JTextArea(5, 30);
//UserText.setLineWrap(true);
//UserText.setWrapStyleWord(true);
UserText.setBorder(BorderFactory.createLineBorder(Color.CYAN, 1));
UserText.setText("Enter Message. Press enter to send");
UserText.setFocusable(true);
UserText.addKeyListener(this);
UserText.setPreferredSize(new Dimension(5, 20));
//Adds all components to pane
Messages.add(info);
Messages.add(MessageScroll);
Messages.add(UserText);
pane.add(UserScroll, BorderLayout.WEST);
pane.add(Messages, BorderLayout.CENTER);
//JFrame setup
Messaging.setTitle("Messaging");
Messaging.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Messaging.setContentPane(pane);
Messaging.setVisible(true);
Messaging.setSize(400, 350);
Load_User(current_user);
}
First of all, variable names should NOT start with an upper case character. Some of your variable names are correct, other are not. Be consistent and follow Java conventions!!!
.I am having trouble getting all the buttons in the side panel to be the same width,
Don't use a BoxLayout. It does not automatically resize on the opposite axis of the layout.
Instead you can use:
a GridLayout to make all the buttons the same size. The GridLayout will also fill the area vertically which is not what you want so you will need to nest panels. So create a parent panel using a BorderLayout. Add your panel using the GridLayout with the buttons to the BorderLayout.PAGE_START of this parent panel. Then add the BorderLayout panel to the scroll pane.
a GridBagLayout. You will need to use the "fill" contstraint to have the component fill the width of the cell.
Read the Swing tutorial on Layout Managers for more information and examples.
Or maybe a different approach is to use a JList to display the users.
How do I change the font size of a JRadioButton (in Java)?
I just want to make the text 24px instead of the default so that it matches the label.
Here's a link to a picture of my window...
(I don't have enough reputation to post the image directly...)
http://i.stack.imgur.com/z60kN.png
And here's a snippet of my code...
// question 1: make the labels / radio buttons / buttons / rows
JLabel q1 = new JLabel("Question 1: 2 + 4");
q1.setFont (q1.getFont ().deriveFont (24.0f));
final JRadioButton q1a1 = new JRadioButton("5");
final JRadioButton q1a2 = new JRadioButton("6");
final JRadioButton q1a3 = new JRadioButton("7");
final JRadioButton q1a4 = new JRadioButton("8");
JButton q1go = new JButton("Go");
JButton q1exit = new JButton("Exit");
JPanel question = new JPanel();
JPanel answers = new JPanel();
JPanel buttons = new JPanel();
question.setLayout(new BoxLayout(question, BoxLayout.X_AXIS));
answers.setLayout(new BoxLayout(answers, BoxLayout.Y_AXIS));
buttons.setLayout(new BoxLayout(buttons, BoxLayout.X_AXIS));
// add everything to the rows
question.add(q1);
answers.add(q1a1);
answers.add(q1a2);
answers.add(q1a3);
answers.add(q1a4);
buttons.add(q1go);
buttons.add(q1exit);
// add the rows
add(question);
add(answers);
add(answers);
add(answers);
add(answers);
add(buttons);
// group the radio buttons
ButtonGroup group = new ButtonGroup();
group.add(q1a1);
group.add(q1a2);
group.add(q1a3);
group.add(q1a4);
Thanks in advance!
-HewwoCraziness
You've already done it.
You want the label to have as same font size as Jlabel right. Then you can simply do that by
q1a1.setFont(q1.getFont()); //assign the label's font to radiobutton's font
or do the same way you've done it for label
q1a1.setFont(q1a1.getFont().deriveFont(24.0f));
With this code I will have the following window. I created 2 panels and added the mainp one to the frame and the panel to the mainp I did this in order to make window resizing dynamic (so the panel wont resize to the frame) I tried making my default panel size wider so that the text fields and label become wider but panel.setsize doesn't seem to do anything.
// creates the labels
studId = new JLabel("Student ID");
studAvg = new JLabel("Student Average");
studName = new JLabel("Student Name");
// creates the text fields
JTextField studIdText = new JTextField();
JTextField studAvgText = new JTextField();
JTextField studNameText = new JTextField();
JPanel mainp = new JPanel();
JPanel panel = new JPanel();
panel.setLayout(new GridLayout(3, 2, 2, 2));
panel.setSize(300, 100);
// adds to the GridLayout
panel.add(studId);
panel.add(studIdText);
panel.add(studName);
panel.add(studNameText);
panel.add(studAvg);
panel.add(studAvgText);
mainp.add(panel);
add(BorderLayout.CENTER,mainp);
// verifies the textfields
studIdText.setInputVerifier(new IntVerifier());
studAvgText.setInputVerifier(new DoubleVerifier());
setTitle("Student Form");
setSize(300, 200);
setLocationRelativeTo(null);
setDefaultCloseOperation(EXIT_ON_CLOSE);
The method you are looking for is setPreferredSize. Use it instead of panel.setSize(300, 100).
panel.setPreferredSize(new Dimension(300, 100));
I would also recommend to not setting the size of your JFrame to the fixed value (300,200) but do pack() instead. This will set the size of your JFrame to fit the panels inside.
using Advise from #Dan and #MADprogrammer and #trashgod i came up with the following
JTextField studIdText = new JTextField(20);
JPanel panel = new JPanel();
panel.setLayout(new GridBagLayout());
GridBagConstraints r1 = new GridBagConstraints();
r1.fill = GridBagConstraints.HORIZONTAL;
r1.weightx = 0.0;
r1.gridx = 0;
r1.gridy = 0;
panel.add(studId,r1);
r1.weightx = 0.5;
r1.gridx = 1;
r1.gridwidth = GridBagConstraints.REMAINDER;
panel.add(studIdText,r1);
of course you can make GridBagConstraints for every row and just change the gridy
Set the layout for mainp as BorderLayout.
mainp.setLayout(new BorderLayout());
Then, in order to avoid having the textfields resize vertically and look strange, you can add panel to BorderLayout.NORTH, for instance.
mainp.add(panel, BorderLayout.NORTH);