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GridLayout organizes a JPanel like a 2-dimensional array (think battleship board game board) so you can easier add items to it in an organized manner
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How do you set button size in GridLayout java?
You don't. GridLayout is one of the layout managers that completely ignores all .setSize and .setPreferredSize method calls. If you want to set the size of buttons in a GridLayout, you should add each button to a JPanel, and add the JPanels to the Container with a GridLayout. This way you can use, for example, a FlowLayout on the JPanel and use a button.setPreferredSize method call to try to keep the buttons a particular size.
How do you add items in GridLayout in Java?
You don't actually add items to a LayoutManager object. You should set the layout of the Container you want to add your Components to and the GridLayout will put them where they need to be. Container myContainer = new Container(); int numRows = 3; int numCols = 2; GridLayout myLayoutManager = new GridLayout(numRows, numCols); myContainer.setLayout(myLayoutManager); // Add some JButtons to the container... myContainer.add(new JButtons ("1")); myContainer.add(new JButtons ("2")); myContainer.add(new JButtons ("3")); myContainer.add(new JButtons ("4")); myContainer.add(new JButtons ("5")); myContainer.add(new JButtons ("6")); Your final component will look something like the following: | 1 | 2 | | 3 | 4 | | 5 | 6 |
What are different types of layout manager available in java awt?
A layout manager is an object that is used to organize components in a container.And it is an interface in the java class libraries that describes how a container and a layout manager communicate. There are 5 main Layouts in java :------ 1. FlowLayout 2. BorderLayout 3. CardLayout 4. GridLayout 5. GridbagLayout
What is the function of a layoutmanager in java?
The function of a layout manager is to help the java programmer with aligning and positioning components inside the AWT or Java Swing components like a Frame or a Panel. Without the layout managers the programmer will have to position these components one by one manually which is very difficult and may also result in poor layout response when the user re-sizes the UI window. Some of the commonly used layout managers are: a. BorderLayout b. GridLayout c. GridBagLayout d. Etc
Java program to design registration form using awt controls?
import java.awt.*;import java.awt.event.*;public class DataEntry {public static void main(String[] args) {Frame frm=new Frame("DataEntry frame");Label lbl = new Label("Please fill this blank:");frm.add(lbl);frm.setSize(350,200);frm.setVisible(true);frm.addWindowListener(new WindowAdapter(){public void windowClosing(WindowEvent e){System.exit(0);}});Panel p = new Panel();Panel p1 = new Panel();Label jFirstName = new Label("First Name");TextField lFirstName = new TextField(20);Label jLastName =new Label("Last Name");TextField lLastName=new TextField(20);p.setLayout(new GridLayout(3,1));p.add(jFirstName);p.add(lFirstName);p.add(jLastName);p.add(lLastName);Button Submit=new Button("Submit");p.add(Submit);p1.add(p);frm.add(p1,BorderLayout.NORTH);}}
How do you set button size in GridLayout java?
You don't. GridLayout is one of the layout managers that completely ignores all .setSize and .setPreferredSize method calls. If you want to set the size of buttons in a GridLayout, you should add each button to a JPanel, and add the JPanels to the Container with a GridLayout. This way you can use, for example, a FlowLayout on the JPanel and use a button.setPreferredSize method call to try to keep the buttons a particular size.
What is layout and types of layout?
layout is how u are going to set your things out
How do you add items in GridLayout in Java?
You don't actually add items to a LayoutManager object. You should set the layout of the Container you want to add your Components to and the GridLayout will put them where they need to be. Container myContainer = new Container(); int numRows = 3; int numCols = 2; GridLayout myLayoutManager = new GridLayout(numRows, numCols); myContainer.setLayout(myLayoutManager); // Add some JButtons to the container... myContainer.add(new JButtons ("1")); myContainer.add(new JButtons ("2")); myContainer.add(new JButtons ("3")); myContainer.add(new JButtons ("4")); myContainer.add(new JButtons ("5")); myContainer.add(new JButtons ("6")); Your final component will look something like the following: | 1 | 2 | | 3 | 4 | | 5 | 6 |
What are different types of layout manager available in java awt?
A layout manager is an object that is used to organize components in a container.And it is an interface in the java class libraries that describes how a container and a layout manager communicate. There are 5 main Layouts in java :------ 1. FlowLayout 2. BorderLayout 3. CardLayout 4. GridLayout 5. GridbagLayout
How do you set bound to tab pane in java swing?
import java.awt.*; import javax.swing.*; public class SixChoicePanel extends JPanel { public SixChoicePanel(String title, String[] buttonLabels) { super(new GridLayout(3, 2)); setBackground(Color.lightGray); setBorder(BorderFactory.createTitledBorder(title));ButtonGroup group = new ButtonGroup(); JRadioButton option; int halfLength = buttonLabels.length/2; // Assumes even length for(int i=0; i
How do you move label control and other controls in asp.net 2008?
It was MS_POSITIONING="GridLayout" in the body tag. But this is removed since Visual Studio 2005. You can imitate this result by doing the following: Tools - Options - HTML Designer - CSS Positioning - Positioning Options, and setting it to absolute positioned. Visual Studio 2008: Tools - Options - Html Designer - CSS Styling - Change positioning to absolute for controls added using Toolbox, paste or drag and drop.
What is the function of a layoutmanager in java?
The function of a layout manager is to help the java programmer with aligning and positioning components inside the AWT or Java Swing components like a Frame or a Panel. Without the layout managers the programmer will have to position these components one by one manually which is very difficult and may also result in poor layout response when the user re-sizes the UI window. Some of the commonly used layout managers are: a. BorderLayout b. GridLayout c. GridBagLayout d. Etc
Java program to design registration form using awt controls?
import java.awt.*;import java.awt.event.*;public class DataEntry {public static void main(String[] args) {Frame frm=new Frame("DataEntry frame");Label lbl = new Label("Please fill this blank:");frm.add(lbl);frm.setSize(350,200);frm.setVisible(true);frm.addWindowListener(new WindowAdapter(){public void windowClosing(WindowEvent e){System.exit(0);}});Panel p = new Panel();Panel p1 = new Panel();Label jFirstName = new Label("First Name");TextField lFirstName = new TextField(20);Label jLastName =new Label("Last Name");TextField lLastName=new TextField(20);p.setLayout(new GridLayout(3,1));p.add(jFirstName);p.add(lFirstName);p.add(jLastName);p.add(lLastName);Button Submit=new Button("Submit");p.add(Submit);p1.add(p);frm.add(p1,BorderLayout.NORTH);}}
How do you do fcfs program in easy method using java?
import javax.swing.*; import java.awt.*; import java.awt.event.*; class fcfs extends JFrame implements ActionListener { JButton jb[] = new JButton[3]; JTextField jt1[],jt2[]; JLabel jl[],jl1,jl2,jl3; JPanel jp,jp1; Container con; int k,p; String str[] = {"SUBMIT","RESET","EXIT"}; String str1[] = {"Process"," AT","ST","WT","FT","TAT","NTAT"}; public fcfs() { super("fcfs scheduling algoritham"); con = getContentPane(); k= Integer.parseInt(JOptionPane.showInputDialog("Enter number of process")); jl1 = new JLabel("Process"); jl2 = new JLabel("Arival Time"); jl3 = new JLabel("Service Time"); jl = new JLabel[k]; jt1 = new JTextField[k]; jt2 = new JTextField[k]; for(int i=0;i<k;i++) { jl[i] = new JLabel("process"+(i+1)); jt1[i] = new JTextField(10); jt2[i] = new JTextField(10); } for(int i=0;i<3;i++) { jb[i] = new JButton(str[i]); } con.setLayout(new GridLayout(k+2,3)); con.add(jl1); con.add(jl2); con.add(jl3); int l=0; for(int i=0;i<k;i++) { con.add(jl[l]); con.add(jt1[l]); con.add(jt2[l]); l++; } l=0; for(int i=0;i<3;i++) { con.add(jb[l]); jb[l].addActionListener(this); l++; } }//end of constructor public void actionPerformed(ActionEvent ae) { int FT[] = new int[k]; int WT[] = new int[k]; int TAT[] = new int[k]; float NTAT[] = new float[k]; float sum=0; float avg; JPanel main = new JPanel(); main.setLayout(new BorderLayout()); jp = new JPanel(); jp1 = new JPanel(); jp.setLayout(new GridLayout(k+1,7)); jp1.setLayout(new FlowLayout()); if(ae.getSource() jb[1]) { setVisible(false); fcfs window = new fcfs(); window.setSize(400,300); window.setVisible(true); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } }//END ACTION PERFORMED public static void main(String[] args) { fcfs window = new fcfs(); window.setSize(400,300); window.setVisible(true); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); }//end main }//end class
How make calculator in java applet?
import java.awt.*; import java.awt.event.*; import java.applet.*; /* */ public classCal extends Applet implements ActionListener { String msg=" "; int v1,v2,result; TextField t1; Button b[]=new Button[10]; Button add,sub,mul,div,clear,mod,EQ; char OP; public void init() { Color k=new Color(120,89,90); setBackground(k); t1=newTextField(10); GridLayout gl=new GridLayout(4,5); setLayout(gl); for(int i=0;i
To Write program in Java to create applets to Create a color palette with matrix of buttons using applet viewer?
/* <applet code=palette height=600 width=600> </applet> */ import java.awt.*; import java.awt.event.*; import java.applet.*; public class palette extends Applet implements ActionListener,ItemListener { Button[] colors; Checkbox foreground,background; TextArea workarea; CheckboxGroup cbg; Panel buttonpanel,checkpanel,palettepanel; String colour; public void init() { buttonpanel=new Panel(); buttonpanel.setLayout(new GridLayout(3,3)); colors=new Button[9]; colors[0]=new Button("RED"); colors[1]=new Button("GREEN"); colors[2]=new Button("BLUE"); colors[3]=new Button("CYAN"); colors[4]=new Button("ORANGE"); colors[5]=new Button("WHITE"); colors[6]=new Button("BLACK"); colors[7]=new Button("YELLOW"); colors[8]=new Button("PINK"); for(int i=0;i<9;i++) { colors[i].addActionListener(this); buttonpanel.add(colors[i]); } checkpanel=new Panel(); checkpanel.setLayout(new FlowLayout()); cbg=new CheckboxGroup(); foreground=new Checkbox("ForeGround",cbg,true); background=new Checkbox("BackGround",cbg,false); foreground.addItemListener(this); background.addItemListener(this); checkpanel.add(foreground); checkpanel.add(background); workarea=new TextArea(8,40); workarea.setFont(new Font("Garamond",Font.BOLD,20)); palettepanel=new Panel(); palettepanel.setLayout(new BorderLayout()); palettepanel.add(workarea,BorderLayout.CENTER); palettepanel.add(checkpanel,BorderLayout.EAST); palettepanel.add(buttonpanel,BorderLayout.SOUTH); add(palettepanel); } public void itemStateChanged(ItemEvent ie) { } public void actionPerformed(ActionEvent ae) { colour=ae.getActionCommand(); if(foreground.getState()==true) workarea.setForeground(getColour()); if(background.getState()==true) workarea.setBackground(getColour()); } public Color getColour() { Color mycolor=null; if(colour.equals("RED")) mycolor=Color.red; if(colour.equals("GREEN")) mycolor=Color.green; if(colour.equals("BLUE")) mycolor=Color.blue; if(colour.equals("CYAN")) mycolor=Color.cyan; if(colour.equals("ORANGE")) mycolor=Color.orange; if(colour.equals("WHITE")) mycolor=Color.white; if(colour.equals("BLACK")) mycolor=Color.black; if(colour.equals("YELLOW")) mycolor=Color.yellow; if(colour.equals("PINK")) mycolor=Color.pink; return mycolor; } }
What is the component of pluggable look and feel in java?
"Pluggable look and feel" refers to the ability to change the look and feel (LnF) of a Java program on the fly. The term is actually quite descriptive. If you change the LnF of your program, all GUI elements will have a distinctly different look to them. Windows will be drawn differently, buttons and scroll bars will look (and may respond) differently, etc. You can change the current LnF by invoking: UIManager.setLookAndFeel(lookAndFeel); Probably the most useful invocation of this method uses the UIManager class to figure out what the underlying operating system is, and to use the default LnF for your program: UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); This will make programs run on a Windows machine look like a Windows application, programs run on a Mac look like a Mac application, etc. Another useful function is the UIManager.getInstalledLookAndFeels(), which will return an array of all available LnFs. Below is a simple sample program which will demonstrate these methods. Two things to take note of: # Once you change the look and feel, you need to call the updateUI method on all JComponents. The good people at Sun recommend calling SwingUtilities.updateComponentTreeUI(Component). If you call this on your top level components (main frame/window), it should update all components contained within it. # UIManager.setLookAndFeel can throw a lot of exceptions. Be prepared to have a large try-catch block (or a throws clause) everywhere you set the LnF. try { // Start off with the system default LnF UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); // Ugly, ugly try-catch block if you catch each type individually. } catch (final ClassNotFoundException ex) { } catch (final InstantiationException ex) { } catch (final IllegalAccessException ex) { } catch (final UnsupportedLookAndFeelException ex) { } catch (final ClassCastException ex) { } // Create our frame final JFrame frame = new JFrame("LnF Test Frame"); // Set up our simple panel final JPanel panel = new JPanel(); panel.setLayout(new GridLayout(4, 4)); // Set up a button for each installed LookAndFeel. // When a button is pressed, the LnF will change. for (final LookAndFeelInfo lnfInfo : UIManager.getInstalledLookAndFeels()) { final String lnfName = lnfInfo.getName(); final String lnfClassName = lnfInfo.getClassName(); final JButton button = new JButton(lnfName); button.addActionListener(new ActionListener() { // Here's where we change and update the LnF public final void actionPerformed(final ActionEvent ev) { try { UIManager.setLookAndFeel(lnfClassName); SwingUtilities.updateComponentTreeUI(frame); } catch (final Exception ex) { } } }); panel.add(button); } // Set up and display our frame frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // (adding a scroll panel just to see some more components) frame.setContentPane(new JScrollPane(panel, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS)); frame.setSize(300, 300); frame.setVisible(true);
