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Object Oriented Programming Articles
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How to set Row Header View for JScrollPane in Java?
Set Row Header View using the setRowHeaderView() method. Let us first create a KScrollPane and set a list −List myList = new ArrayList(10); for (int index = 0; index < 20; index++) { myList.add("List Item " + index); } final JList list = new JList(myList.toArray(new String[myList.size()])); JScrollPane scrollPane = new JScrollPane(); scrollPane.setViewportView(list);Now, set the row header view −scrollPane.setRowHeaderView(new JLabel("All List Items "));The following is an example to set row header view for JScrollPane in Java −Examplepackage my; import java.awt.BorderLayout; import java.util.ArrayList; import java.util.List; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JList; import javax.swing.JPanel; import javax.swing.JScrollPane; public class SwingDemo { public ...
Read MoreI want to resize and position a JFrame in Java. How can I achieve that?
To resize and position JFrame, use the Dimensions class. Here, we have set the bounds for the frame −int width = 500; int height = 400; Dimension size = Toolkit.getDefaultToolkit().getScreenSize(); frame.setBounds((int) size.getWidth() - width, 0, width, height);The following is an example to resize and poisiton a frame −Examplepackage my; import java.awt.Dimension; import java.awt.GridLayout; import java.awt.Toolkit; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.SwingConstants; public class SwingDemo { public static void main(String[] args) throws Exception { JFrame.setDefaultLookAndFeelDecorated(true); JFrame frame = new JFrame("Register!"); JLabel label1, label2, label3; ...
Read MoreHow to change the maximum value of a JSlider in Java?
To change the maximum value of a slider in Java, use the setMaximum() method wherein set the maximum value.Let’s say the following is our slider in Java −JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 100, 55); slider.setMinorTickSpacing(10); slider.setMajorTickSpacing(25); slider.setPaintTicks(true); slider.setPaintLabels(true);Now, set the maximum value −slider.setMaximum(150);The following is an example to change the maximum value of a slidier −Examplepackage my; import java.awt.Color; import java.awt.Font; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JSlider; import javax.swing.WindowConstants; public class SwingDemo { public static void main(String[] args) { JFrame frame = new JFrame("Frame with Slider"); JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, ...
Read MoreCan we remove the Title Bar of a Frame in Java?
Yes, we can remove the title bar of a frame using the setUndecorated() method. Set it to TRUE if you don’t want to remove the Title Bar.The following is an example to remove the title bar of a frame in Java −Examplepackage my; import java.awt.GridLayout; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.SwingConstants; public class SwingDemo { public static void main(String[] args) throws Exception { JFrame frame = new JFrame("Login!"); JLabel label1, label2, label3; frame.setLayout(new GridLayout(2, 2)); label1 = new JLabel("DeptId", SwingConstants.CENTER); ...
Read MoreHow to create an invisible fixed width component between two components in Java?
Use the createHorizontalStrut() method to create an invisible width component between two components. Let’s say we have some button and we are creating a fixed width between them −box.add(button4); box.add(Box.createHorizontalStrut(50)); box.add(button5); box.add(Box.createHorizontalStrut(30)); box.add(button6);The following is an example to create an invisible fixed width component between two components −Examplepackage my; import java.awt.BorderLayout; import javax.swing.Box; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JScrollPane; public class SwingDemo { public static void main(String args[]) { JFrame frame = new JFrame("Groups"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JButton button1 = new JButton("CSK"); JButton button2 = new JButton("DC"); ...
Read MoreJava Program to set different height for multiple rows in JTable
To set different height for multiple rows, use the setRowHeight() method for separate rows for which you want to increase the row height. Let us first see an example to create a table with same height for all the rows −Examplepackage my; import java.awt.Color; import java.awt.Font; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.DefaultTableModel; public class SwingDemo { public static void main(String[] argv) throws Exception { DefaultTableModel tableModel = new DefaultTableModel(); JTable table = new JTable(tableModel); tableModel.addColumn("Language/ Technology"); tableModel.addColumn("Text Tutorial"); tableModel.addColumn("Video Tutorial"); ...
Read MoreSet the content of the label horizontally and vertically centered in Java
To simply set the content of the label horizontally and vertically centered, use the constant CENTER.JLabel label = new JLabel("Best IDE", JLabel.CENTER);The following is an example to set the content of the lable horizontally and verticaly centered −Examplepackage my; import java.awt.Color; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.Font; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextArea; import javax.swing.WindowConstants; public class SwingDemo { public static void main(String[] args) { JFrame frame = new JFrame("Frame"); frame.setLayout(new FlowLayout()); JLabel label = new JLabel("Best IDE", JLabel.CENTER); label.setPreferredSize(new Dimension(190, 100)); label.setOpaque(true); ...
Read MoreHow to arrange components in a FlowLayout to be left-justified in Java?
Use FlowLayout.LEFT to arrange components in a FlowLayout to be left-justified. The following is an example to arrange components in a FlowLayout to be left-justified −Examplepackage my; import java.awt.Color; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.Font; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextArea; import javax.swing.WindowConstants; public class SwingDemo { public static void main(String[] args) { JFrame frame = new JFrame("Internet Language"); frame.setLayout(new FlowLayout(FlowLayout.LEFT)); JLabel label = new JLabel("Top Internet Language"); label.setPreferredSize(new Dimension(240, 70)); label.setOpaque(true); label.setBackground(Color.RED); label.setForeground(Color.WHITE); Font ...
Read MoreHow can I position JButtons vertically one after another in Java Swing?
Position buttons vertically one after another using the Box class. Use the createVerticalBox() method that displays components from top to bottom −JButton button1 = new JButton("One"); JButton button2 = new JButton("Two"); JButton button3 = new JButton("Three"); Box box = Box.createVerticalBox(); box.add(button1); box.add(button2); box.add(button3);The following is an example to position buttons vertically one after another −Examplepackage my; import javax.swing.Box; import javax.swing.JButton; import javax.swing.JFrame; public class SwingDemo { public static void main(String[] args) { JButton button1 = new JButton("One"); JButton button2 = new JButton("Two"); JButton button3 = new JButton("Three"); ...
Read MoreHow to disable close button on a JFrame in Java?
To disable the close button, let us first create a frame −JFrame frame = new JFrame("Login!");Use the setDefaultCloseOperation() to set the status of the close button. Set it to DO_NOTHING_ON_CLOSE to disable it −frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);The following is an example to disable close button on a JFrame in Java −Examplepackage my; import java.awt.GridLayout; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.SwingConstants; public class SwingDemo { public static void main(String[] args) throws Exception { JFrame frame = new JFrame("Login!"); JLabel label1, label2, label3; frame.setLayout(new GridLayout(2, 2)); label1 = ...
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