I have currently a functional Java progam with a gui. Its a simple table of contacts with 3 buttons: add, remove, and edit. Right now the buttons are in the program but they do not work yet. I need the buttons to actually be able to add, remove, or edit things on the table. Thanks so much.

Here is the working code so far:

//PersonTableModel.java import java.util.List; import javax.swing.table.AbstractTableModel; public class PersonTableModel extends AbstractTableModel { private static final int COLUMN_FIRSTNAME = 0; private static final int COLUMN_MIDDLENAME = 1; private static final int COLUMN_LASTNAME = 2; private static final int COLUMN_JOB = 3; private String[] columnNames = {\"First Name\", \"Middle Name\", \"Last Name\", \"JOB\" }; private List listPersons;

public PersonTableModel(List listPersons){ this.listPersons = listPersons; } @Override public int getColumnCount() { return columnNames.length; }

@Override public int getRowCount() { return listPersons.size(); }

@Override public Object getValueAt(int rowIndex, int columnIndex) { Person person = listPersons.get(rowIndex); Object returnValue = null; switch(columnIndex){ case COLUMN_FIRSTNAME: returnValue = person.getFirstName(); break; case COLUMN_MIDDLENAME: returnValue = person.getMiddleName(); break; case COLUMN_LASTNAME: returnValue = person.getLastName(); break; case COLUMN_JOB: returnValue = person.getJob(); break; default: throw new IllegalArgumentException(\"Invalid column index\"); } return returnValue; } @Override public String getColumnName(int columnIndex) { return columnNames[columnIndex]; } }

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//Person.java public class Person { public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public String getMiddleName() { return middleName; } public void setMiddleName(String middleName) { this.middleName = middleName; } public String getLastName() { return lastName; } public void setLastName(String lastName) { this.lastName = lastName; } public String getJob() { return job; } public void setJob(String job) { this.job = job; } private String firstName; private String middleName; private String lastName; private String job;

public Person(String firstName, String middleName, String lastName, String job){ this.firstName = firstName; this.middleName = middleName; this.lastName = lastName; this.job = job; } }

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//TableGUI.java import java.awt.BorderLayout; import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.List; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTable; public class TableGUI extends JFrame { //Create PersonTableModel variable PersonTableModel prm; //Create JTable variable JTable table; //Create two panel variables JPanel tablePanel; JPanel buttonPanel; //Declare three button variables JButton addButton; JButton editButton; JButton exitButton; public TableGUI(Listlist) { //set layour as borderlayout setLayout(new BorderLayout()); //Craete an instance of PersonTableModel prm=new PersonTableModel(list); //Create an intance of JTable and set PersonTableModel as its object table=new JTable(prm); tablePanel=new JPanel(); tablePanel.add(table); //Add tablePanel add(tablePanel, BorderLayout.NORTH); buttonPanel=new JPanel(); buttonPanel.setLayout(new FlowLayout()); addButton=new JButton(\"Add\"); addButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent arg0) { System.out.println(\"Not implemented\"); } }); buttonPanel.add(addButton); editButton=new JButton(\"Edit\"); buttonPanel.add(editButton); editButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { System.out.println(\"Not implemented\"); } }); exitButton=new JButton(\"Exit\"); buttonPanel.add(exitButton); exitButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { System.out.println(\"Not implemented\"); } }); //Add buttonPanel add(buttonPanel, BorderLayout.CENTER); pack(); } }

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/**The driver program that displays jTable with * three buttons to add, edit and exit . The buttons * are not implemented. * */ //PersonDriver.java import java.util.ArrayList; import java.util.List; import javax.swing.JFrame; public class PersonDriver extends JFrame { public static void main(String[] args) { //Create a ArrayList object ListarrayList=new ArrayList(); //Add rows to the arrayList arrayList.add(new Person(\"FirstName\", \"MiddleName\", \"LastName\", \"Job\")); arrayList.add(new Person(\"f1\", \"m1\", \"l2\", \"j3\")); arrayList.add(new Person(\"f5\", \"m4\", \"l3\", \"j1\")); arrayList.add(new Person(\"f3\", \"m3\", \"l5\", \"j2\")); arrayList.add(new Person(\"f1\", \"m2\", \"l4\", \"j5\")); arrayList.add(new Person(\"f4\", \"m5\", \"l1\", \"j4\")); //Create an JFrame object JFrame tableFrame=new TableGUI(arrayList); //Set title tableFrame.setTitle(\"JTableExample\"); //Set visible true tableFrame.setVisible(true); } }

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