Write a GUI contact list application. The program should allow you to input name

Question

Write a GUI contact list application. The program should allow you to input names and phone numbers. You should also be able to input a name and have it display the previously entered phone number. The GUI should look something like the following, although you are welcome to format it in any way that works. This should be a GUI application with a JFrame. The program should contain two arrays of Strings. One array will contain a list of names and the other will contain the phone numbers. Even though we refer to a phone “number”, it may be easiest to store the number as a string. We will assume that no more than 100 names will be in the phonebook. These two arrays should be class instance variables. You will also want an integer class instance variable (initialized to zero) that will contain the number of names that have been entered into the phonebook. When the user presses the Add button, the program should get the text in the two input files and put the strings into the next location in the two arrays. The count should be incremented. When the user presses the Find button, the program should get the text from the name input field and search for that name in the name array. If the name is found in the name array, the program should set the text of the phone number input field to the string in the phone number array with the same index. If the input name string is not found in the name array, the program should display an appropriate error message in the phone number input field.

[90 points] Implement the program as described above with two arrays, one for the names and one for the phone numbers.

[10 points] Instead of two arrays of Strings, create another class called Contact with two class instance String variables to hold the name and phone number. You can make the two data fields public for easy access. In the GUI program use an array of Contact objects instead of two arrays of Strings. When the user presses the Add button, create a new object of the Contact class and put the new object in the array of Contact objects. When the Find button is pressed, search the array for a Contact object whose name field matches the name entered.

JFrame:

Where add and find are the buttons to be pressed and enter name/phone number are where you will enter things.

Explanation / Answer

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/

package addressbook;

/**
*
* @author TANAY
*/
public class abook extends javax.swing.JFrame {
String[] name= new String [100];
String[] number=new String[100];
int c=0;
  
/**
* Creates new form abook
*/
public abook() {
initComponents();
}

/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

jOptionPane1 = new javax.swing.JOptionPane();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jTextField3 = new javax.swing.JTextField();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

jTextField1.setText("jTextField1");

jTextField2.setText("jTextField2");

jButton1.setText("Add");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

jButton2.setText("Find");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});

jTextField3.setText("jTextField3");

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(315, 315, 315)
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 107, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton2)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(387, 387, 387))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(99, 99, 99)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(36, 36, 36)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(95, 95, 95)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2))
.addGap(58, 58, 58)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(103, Short.MAX_VALUE))
);

pack();
}// </editor-fold>

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {   
// TODO add your handling code here:
name[c]=jTextField1.getText();
number[c]=jTextField2.getText();
c++;
  
}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {   
// TODO add your handling code here:
String s=jTextField3.getText();
int i;
  
for(i=0;i<name.length;i++)
{
if(name[i].equals(s))
{
jOptionPane1.showMessageDialog(jOptionPane1, i);
break;
}
}
if(i==name.length)
{
jOptionPane1.showMessageDialog(jOptionPane1, "Name not found");
}
}

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(abook.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(abook.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(abook.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(abook.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>

/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new abook().setVisible(true);
}
});
}

// Variables declaration - do not modify   
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JOptionPane jOptionPane1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
// End of variables declaration   
}

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