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POHow do I add mnemonics in java swing?
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  1. POHow do I add mnemonics in java swing?
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    copied!<p>So I have a greeting program with 3 JTextfields and 3 JLabels next to them and I want to add mnemonics, which I believe is the little underline underneath one of the letters in the JLabel next to the JTextField. When the user presses Alt+underlined key, then the cursor will go to the JTextfield next to it. Here is my code so that just shows the simple greeting without mnemonics</p> <pre><code>import javax.swing.*; import javax.swing.UIManager.LookAndFeelInfo; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class GreetingApp extends JFrame { private static final long serialVersionUID = 1L; private final JTextField firstNameField,middleNameField,lastNameField; private final JButton greetingButton; public GreetingApp() { super("Greetings"); this.firstNameField = new JTextField(8); this.middleNameField = new JTextField(8); this.lastNameField = new JTextField(8); this.greetingButton = new JButton("Get Greeting"); greetingButton.addActionListener(new ActionListener() { @Override public void actionPerformed(final ActionEvent ae){ showGreeting(); } }); final Container mainPanel = getContentPane(); mainPanel.setLayout(new BorderLayout()); final JPanel inputPanel = new JPanel(); final JPanel buttonPanel = new JPanel(); inputPanel.setLayout(new GridLayout(3,3,3,5)); buttonPanel.setLayout(new FlowLayout()); JSeparator sep = new JSeparator(); inputPanel.add(new JLabel("First Name: "),JLabel.LEFT_ALIGNMENT); inputPanel.add(firstNameField); inputPanel.add(new JLabel("MI: "),JLabel.LEFT_ALIGNMENT); inputPanel.add(middleNameField); inputPanel.add(new JLabel("Last Name: "),JLabel.LEFT_ALIGNMENT); inputPanel.add(lastNameField); mainPanel.add(inputPanel,BorderLayout.PAGE_START); //buttonPanel.add(sep,BorderLayout.PAGE_START); mainPanel.add(sep,BorderLayout.CENTER); buttonPanel.add(greetingButton); mainPanel.add(buttonPanel,BorderLayout.PAGE_END); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); pack(); setLocationRelativeTo(null); setVisible(true); } private String getFullName() throws IllegalStateException{ if(firstNameField.getText().trim().length() == 0){ throw new IllegalArgumentException("First name cannot be blank"); } if(middleNameField.getText().trim().length() &gt; 1){ throw new IllegalArgumentException("Middle intial cannot be greater than 1 letter"); } if(lastNameField.getText().trim().length() == 0){ throw new IllegalArgumentException("Last name cannot be blank"); } if(middleNameField.getText().trim().length() ==0){ return "Greetings, "+this.firstNameField.getText()+" "+ this.middleNameField.getText() +this.lastNameField.getText()+"!"; } return "Greetings, "+this.firstNameField.getText()+" "+ this.middleNameField.getText()+"."+this.lastNameField.getText()+"!"; } private void showGreeting(){ try{ String message = getFullName(); JOptionPane.showMessageDialog(this, message); }catch(final IllegalArgumentException iae){ JOptionPane.showMessageDialog(this, iae.getMessage(), "Error", JOptionPane.ERROR_MESSAGE); } } public static void main(String[] args) { try{ for(LookAndFeelInfo info:UIManager.getInstalledLookAndFeels()){ if("Nimbus".equals(info.getName())){ UIManager.setLookAndFeel(info.getClassName()); break; } } }catch(Exception e){ e.getStackTrace(); } } } </code></pre>
 

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