I want to create a gridLayout with 4 buttons at the center of my Layout, and a button to PAGE_END,PAGE_START,LINE_END,LINE_START. My code does show the last buttons I told you, but not the grid button ones.
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setTitle("Hello World!");
frame.setSize(400,200);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
JPanel p = new JPanel(new BorderLayout());
GridLayout grid = new GridLayout(2,2);
p.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
JButton bg1 = new JButton("Button 1");
p.add(bg1, c);
JButton bg2 = new JButton("Button 2");
p.add(bg2, c);
JButton bg3 = new JButton("Button 3");
p.add(bg3, c);
JButton bg4 = new JButton("Button 4");
p.add(bg4, c);
frame.setLayout(new BorderLayout());
JButton b1 = new JButton("TOP");
JButton b2 = new JButton("LEFT");
JButton b3 = new JButton("RIGHT");
JButton b4 = new JButton("BOTTOM");
frame.add(b1,BorderLayout.PAGE_START);
frame.add(b2,BorderLayout.LINE_START);
frame.add(b3,BorderLayout.LINE_END);
frame.add(b4,BorderLayout.PAGE_END);
}
}
You have created the panel p, but you haven't added it to your frame.
Add this line in your code:
frame.add(p,BorderLayout.CENTER);
Also, you must use this line, if you want the buttons in a grid:
p.setLayout(grid);
instead of p.setLayout(new GridBagLayout());
Related
import java.awt.*;
import javax.swing.*;
public class guiAs {
public static void main (String args [] )
{
JFrame frame = new JFrame ();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(new Dimension (300,300));
frame.setTitle("Calculator");
JPanel panel = new JPanel();
// JLabel label = new JLabel();
//creating num1
JPanel panel2 = new JPanel();
JLabel lable1 = new JLabel("Number 1 ");
JTextField tf1 = new JTextField();
//creating num2
JLabel lable2 = new JLabel("Number 2 ");
JTextField tf2 = new JTextField();
//creating result
JPanel panel3 = new JPanel();
JLabel lable3 = new JLabel("Result: ");
JTextField tf3 = new JTextField(10);
//creating button
JButton Add= new JButton("Add");
JButton Subtract = new JButton("Subtract");
JButton Multiply = new JButton("Multiply");
JButton Division = new JButton("Division");
//creating num1
panel2.add(lable1);
panel2.add(tf1);
//creating num2
panel2.add(lable2);
panel2.add(tf2);
//creating result
panel3.add(lable3);
panel3.add(tf3);
//creating buttons
panel.add(Add);
panel.add(Subtract);
panel.add(Multiply);
panel.add(Division);
// frame.getContentPane().add(BorderLayout.WEST, panel3);
//creating Box Layout for num1 and num2
BoxLayout layout2 = new BoxLayout(panel2, BoxLayout.Y_AXIS);
panel2.setLayout(layout2);
frame.setLayout(new FlowLayout());
frame.add(panel2);
//creating Box Layout for buttons
BoxLayout layout1 = new BoxLayout(panel, BoxLayout.Y_AXIS);
panel.setLayout(layout1);
frame.setLayout(new FlowLayout());
frame.add(panel);
// Add.setAlignmentX(Component.RIGHT_ALIGNMENT);
// panel.add(Add);
// frame.getContentPane().add(BorderLayout.SOUTH, panel);
//creating Border Layout for num1 and num2
frame.getContentPane().add(BorderLayout.WEST, panel2);
//creating Border Layout for Buttons
frame.getContentPane().add(BorderLayout.EAST, panel);
//creating Box Layout for Result
frame.getContentPane().add(BorderLayout.SOUTH, panel3);
frame.setVisible(true);
}
}
this is my code, and I have no idea to make the text field next to the numbers. i try several times but does not comes together. whenever i add something the panels moves
its work only with the result but for the number doesn't work
here i used Box Layout for buttons and number 1 and number 2:
You were very close to solving it.
Replace this line
JPanel panel2 = new JPanel();
With this line
JPanel panel2 = new JPanel(new GridLayout(2, 2));
Then, get rid of these 3 lines
BoxLayout layout2 = new BoxLayout(panel2, BoxLayout.Y_AXIS);
panel2.setLayout(layout2);
frame.setLayout(new FlowLayout());
Now your code looks like this
I'm trying to left align the class and neutral buttons so they are in line with the left most card button. For some reason, setAlignmentX only shifts the buttons half way. Here is the code. Is there away to align the buttons?
private String[] listEntries = {"a","a","a","a","a"};
private JButton remove = new JButton("Remove");
private JList list;
private JButton b1 = new JButton("Class");
private JButton b2 = new JButton("Neutral");
private JPanel page = new JPanel(new CardLayout());
private DefaultListModel listModel = new DefaultListModel();
public Main () {
JPanel leftPanel = new JPanel();
JPanel rightPanel = new JPanel();
rightPanel.setLayout(new BoxLayout(rightPanel,BoxLayout.PAGE_AXIS));
leftPanel.setLayout(new BoxLayout(leftPanel,BoxLayout.PAGE_AXIS));
rightPanel.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
leftPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
JLabel title = new JLabel("Deck Constructor", SwingConstants.CENTER);
title.setBorder(BorderFactory.createEmptyBorder(10,0,0,0));
//Set up Deck List
list = new JList(listModel);
list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
list.setLayoutOrientation(JList.VERTICAL);
list.setVisibleRowCount(-1);
JScrollPane listScroller = new JScrollPane(list);
listScroller.setPreferredSize(new Dimension(150, 80));
JLabel listTitle = new JLabel("List");
listTitle.setLabelFor(list);
listScroller.setAlignmentX(LEFT_ALIGNMENT);
rightPanel.add(listTitle);
rightPanel.add(listScroller);
rightPanel.add(remove);
//Set up Card Selection
JPanel buttonPanel = new JPanel();
buttonPanel.setAlignmentX(Component.RIGHT_ALIGNMENT);
b1.setActionCommand("Class");
b2.setActionCommand("Neutral");
b1.addActionListener(this);
b2.addActionListener(this);
buttonPanel.add(b1);
buttonPanel.add(b2);
JPanel classCards = new JPanel(new GridLayout(2,3, 10, 10));
JButton card1 = new JButton("Card 1");
card1.addActionListener(this);
card1.setActionCommand("addCard");
JButton card2 = new JButton("Card 2");
JButton card3 = new JButton("Card 3");
JButton card4 = new JButton("Card 4");
JButton card5 = new JButton("Card 5");
JButton card6 = new JButton("Card 6");
classCards.add(card1);
classCards.add(card2);
classCards.add(card3);
classCards.add(card4);
classCards.add(card5);
classCards.add(card6);
JPanel neutral = new JPanel();
neutral.setBackground(Color.BLUE);
page.add(classCards, "Class");
page.add(neutral, "Neutral");
leftPanel.add(buttonPanel);
leftPanel.add(page);
setPreferredSize(new Dimension(640,640/12*9));
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().add(leftPanel,BorderLayout.CENTER);
getContentPane().add(rightPanel,BorderLayout.EAST);
getContentPane().add(title,BorderLayout.NORTH);
pack();
setVisible(true);
}
It is not perfect solution, but you can use for example:
If you want to keep buttons default size:
JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.LEADING,1,2));
and delete:
buttonPanel.setAlignmentX(Component.RIGHT_ALIGNMENT);
If you want to fill buttonPanel with buttons:
JPanel buttonPanel = new JPanel(new GridLayout(1,2,2,2));
buttonPanel.setBorder(new EmptyBorder(2,1,2,1));
In (FlowLayout.LEADING,1,2) and in EmptyBorder(2,1,2,1))the 1,2 values are added to match buttonPanel and classCard hgap and vgap.
I am having trouble adding a scroll pane to a nested panel. Here is what I have:
public class board {
public static void addComponentsToPane(Container pane) {
pane.setLayout(new GridLayout(1, 0));
JPanel left = new JPanel();
pane.add(left);
left.setLayout(new BoxLayout(left, BoxLayout.Y_AXIS));
JPanel leftTop = new JPanel();
leftTop.setPreferredSize(new Dimension(266, 300));
leftTop.setBackground(Color.black);
left.add(leftTop);
JScrollPane scrollPane = new JScrollPane(leftTop); //problem is here
left.add(scrollPane);
JButton jb = new JButton();
jb.setPreferredSize(new Dimension(250,50));
leftTop.add(jb);
JButton jb1 = new JButton();
jb1.setPreferredSize(new Dimension(250,50));
leftTop.add(jb1);
JButton jb2 = new JButton();
jb2.setPreferredSize(new Dimension(250,50));
leftTop.add(jb2);
JButton jb3 = new JButton();
jb3.setPreferredSize(new Dimension(250,50));
leftTop.add(jb3);
JButton jb4 = new JButton();
jb4.setPreferredSize(new Dimension(250,50));
leftTop.add(jb4);
JButton jb5 = new JButton();
jb5.setPreferredSize(new Dimension(250,50));
leftTop.add(jb5);
JButton jb6 = new JButton();
jb6.setPreferredSize(new Dimension(250,50));
leftTop.add(jb6);
JPanel leftBottom = new JPanel();
leftBottom.setPreferredSize(new Dimension(266, 300));
leftBottom.setBackground(Color.red);
left.add(leftBottom);
JPanel middle = new JPanel();
pane.add(middle);
middle.setLayout(new BoxLayout(middle, BoxLayout.Y_AXIS));
JPanel middleTop = new JPanel();
middleTop.setPreferredSize(new Dimension(266, 200));
middleTop.setBackground(Color.green);
middle.add(middleTop);
JPanel middleBottom = new JPanel();
middleBottom.setPreferredSize(new Dimension(266, 400));
middleBottom.setBackground(Color.yellow);
middle.add(middleBottom);
JPanel right = new JPanel();
right.setPreferredSize(new Dimension(266, 600));
right.setBackground(Color.blue);
pane.add(right);
}
private static void createAndShowGUI() {
JFrame frame = new JFrame("GridBagLayoutDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
addComponentsToPane(frame.getContentPane());
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
createAndShowGUI();
}
});
}
}
I am just messing around with JPanels and I cannot seem to add scrolling to the left top pane. I think i initialized scrollPane right, but am I adding it to the wrong pane?
Your initial problem is here
leftTop.setPreferredSize(new Dimension(266, 300));
This is overriding what the layout manager (FlowLayout in this case) would otherwise provide to the JScrollPane in order for it to know how to manage the view (when to show the scrollbars for instance)
The next problem you will have is, FlowLayout won't do what you want it to. Instead you might want to use GridLayout or maybe GridBagLayout instead
JPanel leftTop = new JPanel(new GridBagLayout());
//leftTop.setPreferredSize(new Dimension(266, 300));
leftTop.setBackground(Color.black);
JScrollPane scrollPane = new JScrollPane(leftTop); //problem is here
left.add(scrollPane);
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weightx = 1;
gbc.insets = new Insets(5, 10, 5, 10);
JButton jb = new JButton();
jb.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb, gbc);
JButton jb1 = new JButton();
jb1.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb1, gbc);
JButton jb2 = new JButton();
jb2.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb2, gbc);
JButton jb3 = new JButton();
jb3.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb3, gbc);
JButton jb4 = new JButton();
jb4.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb4, gbc);
JButton jb5 = new JButton();
jb5.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb5, gbc);
JButton jb6 = new JButton();
jb6.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb6, gbc);
Know, if that's not meeting your needs, you will need to create a custom component which implements Scrollable, which will allow you to specify PreferredScrollableViewportSize which will tell the JScrollPane what the preferred size of the viewable area should be, rather then using the preferredSize of the view
Well. I have imported everything, this part is right. The thing I cant get, I want JPanel p2 to be SOUTH, but it doesnt move to SOUTH. Working at ECLIPSE, it's not showing any mistakes. Except it doesnt work the way I want. Help, please
public static void main(String[] args) {
JFrame frame = new JFrame("Title");
frame.setLayout(new BorderLayout());
JButton but1 = new JButton("Button 1");
JButton but2 = new JButton("Button 2");
JButton but3 = new JButton("Button 3");
JButton but4 = new JButton("Button 4");
JButton but5 = new JButton("Button 5");
JButton but6 = new JButton("Button 6");
JButton but7 = new JButton("Button 7");
JButton but8 = new JButton("Button 8");
JPanel p1 = new JPanel();
JPanel p2 = new JPanel();
p1.add(but1);
p1.add(but2);
p1.add(but3);
p1.add(but4);
p2.add(but5);
p2.add(but6);
p2.add(but7);
p2.add(but8);
frame.add(p1,BorderLayout.WEST);
frame.add(p2,BorderLayout.SOUTH);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(640, 480);
frame.setLayout(new FlowLayout());
frame.setResizable(false);
}
}
The problem is that you change the layout of your JFrame to a FlowLayout. Therefore you can't use the (default) BorderLayout of the JFrame anymore and your JPanel doesn't go south. So, just remove that line of code and it will work.
I don't see the point in setting the layout of the JFrame to a FlowLayout as the JPanel uses FlowLayout by default.
There is no errors but when I Run it the content that I added into the JPanel won't appear, only the one not inside the JPanel appear.
import javax.swing.*;
import java.awt.*;
public class SimpleGUI extends JFrame
{
public static void main(String arg[])
{
SimpleGUI f = new SimpleGUI("GUI components");
f.setSize(600,200);
f.setVisible(true);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
SimpleGUI(String s)
{
setTitle(s);
setLayout(new GridLayout(3,2));
JLabel msg = new JLabel("FINAL EXAM IS JUST AROUND THE CORNER!");
JButton bt = new JButton("OK");
JLabel lb = new JLabel ("Enter your name:");
JTextField tf = new JTextField("<type name here>");
JLabel lb2 = new JLabel ("Enter age:");
JTextField tf2= new JTextField(10);
tf2.setHorizontalAlignment(JTextField.RIGHT);
JCheckBox cb = new JCheckBox("Bold",true);
JRadioButton rb1 = new JRadioButton("Red");
JTextArea ta = new JTextArea(5,20);
JList list = new JList(new Object[] {"Block A", "Block B"});
JComboBox jcb = new JComboBox(new Object[] {"Hello", "Bye"});
ImageIcon ic = new ImageIcon("music.gif");
JButton newbt = new JButton("Play",ic);
newbt.setVerticalTextPosition(JButton.TOP);
newbt.setHorizontalTextPosition(JButton.CENTER);
JPanel p1 = new JPanel();
p1.setLayout(new BorderLayout());
p1.add(lb, BorderLayout.WEST);
p1.add(tf, BorderLayout.CENTER);
p1.add(cb, BorderLayout.EAST);
JPanel p2 = new JPanel();
p2.setLayout(new BorderLayout());
p2.add(lb2, BorderLayout.WEST);
p2.add(tf2, BorderLayout.CENTER);
p2.add(rb1, BorderLayout.EAST);
JPanel p3 = new JPanel();
p3.setLayout(new BorderLayout());
p3.add(jcb);
add(ta);
add(list);
p3.add(newbt, BorderLayout.NORTH);
add(msg);
p3.add(bt, BorderLayout.SOUTH);
}
}
I've updated your code. Have a look at this version:
import javax.swing.*;
import java.awt.*;
public class SimpleGUI extends JFrame {
public static void main(String arg[]) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
SimpleGUI f = new SimpleGUI("GUI components");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
});
}
public SimpleGUI(String s) {
setTitle(s);
setLayout(new GridLayout(3, 2));
JLabel msg = new JLabel("FINAL EXAM IS JUST AROUND THE CORNER!");
JButton bt = new JButton("OK");
JLabel lb = new JLabel("Enter your name:");
JTextField tf = new JTextField("<type name here>");
JLabel lb2 = new JLabel("Enter age:");
JTextField tf2 = new JTextField(10);
tf2.setHorizontalAlignment(JTextField.RIGHT);
JCheckBox cb = new JCheckBox("Bold", true);
JRadioButton rb1 = new JRadioButton("Red");
JTextArea ta = new JTextArea(5, 20);
JList list = new JList(new Object[]{"Block A", "Block B"});
JComboBox jcb = new JComboBox(new Object[]{"Hello", "Bye"});
ImageIcon ic = new ImageIcon("music.gif");
JButton newbt = new JButton("Play", ic);
newbt.setVerticalTextPosition(JButton.TOP);
newbt.setHorizontalTextPosition(JButton.CENTER);
JPanel p1 = new JPanel();
p1.setLayout(new BorderLayout());
p1.add(lb, BorderLayout.WEST);
p1.add(tf, BorderLayout.CENTER);
p1.add(cb, BorderLayout.EAST);
JPanel p2 = new JPanel();
p2.setLayout(new BorderLayout());
p2.add(lb2, BorderLayout.WEST);
p2.add(tf2, BorderLayout.CENTER);
p2.add(rb1, BorderLayout.EAST);
JPanel p3 = new JPanel();
p3.setLayout(new BorderLayout());
p3.add(jcb);
add(ta);
add(list);
p3.add(newbt, BorderLayout.NORTH);
add(msg);
p3.add(bt, BorderLayout.SOUTH);
/**
* Need to add the following lines
*/
this.add(p1);
this.add(p2);
this.add(p3);
this.pack();
this.setVisible(true);
}
}
A couple of pointers:
You need to add your components to your JFrame for them to actually show up.
Any updates to the user interface must happen on the event dispatch thread. Consequently you would notice that I've added a SwingUtilites.invokeLater() to the main. Have a look at this article to understand "Threading with Swing"
Where you you add your panels to the frame? Also, forgotten my java "rules and regulations": do you need to call "super()"?