我正在努力。在此框架中，单击“添加记录”按钮，我向 Jframe 添加一个面板，该面板是通过扩展 JPanel 类定义的。现在我希望在单击面板中创建的“保存”按钮时，我想从面板中定义的文本字段获取文本，并将其存储在变量中。单击“保存”按钮时没有任何反应。 帮我。提前致谢。
import java.awt.Color;
import java.sql.Savepoint;
import java.util.Calendar;
import javax.swing.*;
import java.awt.event.*;
import addPanel.panelAddForm;
public class frontPage extends JFrame implements ActionListener
{
//----------*******Variable Declarations*******-------------------
JPanel panelheaderImage, panelSideBar, panelTittle, panelTittleBar;
//panelFrontPage;
JLabel labelheaderImage, labelDate, labelTime, labelTittle, labelBottomImage;
JButton buttonAddRecord, buttonSearch, buttonadd;
JTextField nameSearch;
Calendar currentDate;
String year, month, day;
//------------------------------------------------------------------
//--------******FRAME CONSTRUCTOR*********------------------------
frontPage( )
{
//------------frame initialization--------
setBackground( Color.BLUE );
setSize( 750, 850 );
setVisible( true );
setLayout( null );
//------------frame initialization ENDS------------------------
//------------Panel Initialization Starts----------------------
framBottomImage frameimg = new framBottomImage();
frameBottom framebottom = new frameBottom();
//frameAddForm addform= new frameAddForm();
add( frameimg.panelBottomImage );
add( framebottom.panelBottomText );
//add( addform.panelAddForm );
panelheaderImage = new JPanel( );
panelheaderImage.setBounds( 0, 0, 600, 80 );
add( panelheaderImage );
panelSideBar = new JPanel( );
panelSideBar.setBounds( 520, 90, 200, 40);
panelSideBar.setLayout(null);
add( panelSideBar );
panelTittle = new JPanel();
panelTittle.setLayout(null);
panelTittle.setBounds(0, 85, 550, 30);
add ( panelTittle );
panelTittleBar = new JPanel( );
panelTittleBar.setBounds( 0, 150, 450, 40);
panelTittleBar.setLayout(null);
add( panelTittleBar );
/*panelFrontPage = new JPanel();
panelFrontPage.setLayout(null);
panelFrontPage.setBounds(0, 200, 500, 650);
panelFrontPage.setEnabled(true);
panelFrontPage.setVisible(true);
add(panelFrontPage);*/
//------------Panel Initialization Ends----------------------------
labelheaderImage = new JLabel( new ImageIcon( "C:\\Users\\SUN\\Desktop\\img.jpg" ) );
panelheaderImage.add( labelheaderImage );
currentDate = Calendar.getInstance();
year = "" + currentDate.get( Calendar.YEAR );
month = "" + currentDate.get( Calendar.MONTH );
day = "" + currentDate.get( Calendar.DAY_OF_MONTH );
labelDate = new JLabel( "Date:" + day + "/" + month + "/" + year );
labelDate.setBounds(0, 0, 90, 20);
panelSideBar.add( labelDate );
labelTime = new JLabel( "Time:" );
labelTime.setBounds(0, 20, 50, 20);
panelSideBar.add( labelTime );
labelTittle = new JLabel( "Patient's Case Paper" );
labelTittle.setBounds( 150, 0, 250, 25);
panelTittle.add( labelTittle );
buttonAddRecord = new JButton( "ADD RECORD" );
buttonAddRecord.setBounds( 25, 0, 110, 25 );
buttonAddRecord.addActionListener(this);
panelTittleBar.add( buttonAddRecord );
nameSearch = new JTextField( "" );
nameSearch.setBounds( 170, 0, 110, 25 );
panelTittleBar.add( nameSearch );
buttonSearch = new JButton( "Search" );
buttonSearch.setBounds( 320, 0, 100, 25 );
panelTittleBar.add( buttonSearch );
buttonadd = new JButton( "add" );
buttonadd.setBounds( 170, 410, 80, 25 );
buttonadd.addActionListener(this);
panelTittleBar.add( buttonadd );
}
public void actionPerformed( ActionEvent ae )
{
panelAddForm addform = new panelAddForm();
addform.save.addActionListener(this);
if( ae.getSource( ) == buttonAddRecord )
{
addform.revalidate();
addform.repaint();
add( addform );
System.out.println("at add record button end");
}
if( ae.getSource() == addform.save )
{
System.out.println("Save Clicked");
}
}
}
类panelAddForm.java:
package addPanel;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.security.PublicKey;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.swing.*;
public class panelAddForm extends JPanel
{
JLabel labelName, labelFirstName, labelLastName, labelMiddleName,
labelGender, labelAge, labelCity, labelContact, labelFees,
labelNote, registrationId;
public JTextField textFieldFirstName, textFieldMiddleName, textFieldLastName,
textFieldAge, textFieldCity, textFieldContact, textFieldFees,
textFieldId;
JTextArea textAreaNote;
JRadioButton male, female;
ButtonGroup selection;
public JButton save, cancel;
public panelAddForm()
{
this.setLayout(null);
setVisible(true);
setBounds(0, 200, 500, 450);
registrationId= new JLabel("Registration Id");
registrationId.setBounds(20, 0, 120, 20);
add(registrationId);
textFieldId = new JTextField();
textFieldId.setBounds(130, 0, 50, 20);
add(textFieldId);
labelName = new JLabel( "Name" );
labelName.setBounds( 20, 30, 50, 20);
add(labelName);
labelFirstName = new JLabel("First Name");
labelFirstName.setBounds(100, 50, 80, 10);
add(labelFirstName);
textFieldFirstName = new JTextField( );
textFieldFirstName.setBounds( 100, 30, 80, 20 );
textFieldFirstName.addKeyListener( new KeyAdapter( ) {
public void keyTyped( KeyEvent e ) {
String input = textFieldFirstName.getText( );
Pattern p = Pattern.compile( "[ 0-9,&%$#@!()*^,\t\n\f\r]" );
Matcher m = p.matcher( input );
if ( m.find( ) ) {
JOptionPane.showMessageDialog( null, "Please Enter Valid Name",
"Sorry", JOptionPane.ERROR_MESSAGE );
}
}
} );
add( textFieldFirstName );
//----------------------------------------MNAME---------------------------------------------------
labelMiddleName= new JLabel("Middle Name");
labelMiddleName.setBounds( 190, 50, 80, 10);
add(labelMiddleName);
textFieldMiddleName = new JTextField( );
textFieldMiddleName.setBounds( 190, 30, 80, 20 );
textFieldMiddleName.addKeyListener( new KeyAdapter( ) {
public void keyTyped( KeyEvent e ) {
String input = textFieldMiddleName.getText( );
Pattern p = Pattern.compile( "[ 0-9,&%$#@!()*^]" );
Matcher m = p.matcher( input );
if ( m.find( ) ) {
JOptionPane.showMessageDialog( null, "Please Enter Valid Name",
"Sorry", JOptionPane.ERROR_MESSAGE );
}
}
} );
add( textFieldMiddleName );
//-----------------------------------labelName-----------------------------------------------------------
labelLastName = new JLabel("Last Name");
labelLastName.setBounds(280, 50, 80, 10);
add(labelLastName);
textFieldLastName = new JTextField( );
textFieldLastName.setBounds( 280, 30, 80, 20 );
textFieldLastName.addKeyListener( new KeyAdapter( ) {
public void keyTyped( KeyEvent e ) {
String input = textFieldLastName.getText( );
Pattern p = Pattern.compile( "[ 0-9,&%$#@!()*^]" );
Matcher m = p.matcher( input );
if ( m.find( ) ) {
JOptionPane.showMessageDialog( null, "Please Enter Valid Name",
"Sorry", JOptionPane.ERROR_MESSAGE );
}
}
} );
add( textFieldLastName );
labelGender = new JLabel( "Gender" );
labelGender.setBounds( 20, 70, 70, 20 );
add(labelGender);
selection = new ButtonGroup();
male = new JRadioButton( "Male" );
male.setBounds( 90, 70, 70, 20 );
selection.add( male );
add( male );
female = new JRadioButton( "Female" );
female.setBounds( 170, 70, 70, 20 );
selection.add( male );
add( female );
//---------------------AGE---------------------------------------
labelAge = new JLabel( "Age" );
labelAge.setBounds( 20, 110, 50, 20 );
add( labelAge );
textFieldAge = new JTextField( );
textFieldAge.setBounds( 100, 110, 80, 20 );
textFieldAge.addKeyListener( new KeyAdapter( ) {
public void keyTyped( KeyEvent e ) {
String input = textFieldAge.getText( );
Pattern p = Pattern.compile( "[ A-Z,a-z,&%$#@!()*^]" );
Matcher m = p.matcher( input );
if ( m.find( ) ) {
JOptionPane.showMessageDialog( null, "Numbers only",
"Sorry", JOptionPane.ERROR_MESSAGE );
}
}
} );
add( textFieldAge );
//---------------------CITY---------------------------------------
labelCity = new JLabel( "City" );
labelCity.setBounds( 20, 160, 80, 20 );
add( labelCity );
textFieldCity = new JTextField( );
textFieldCity.setBounds( 120, 160, 80, 20 );
add(textFieldCity);
textFieldCity.addKeyListener( new KeyAdapter( ) {
public void keyTyped( KeyEvent e ) {
String input = textFieldCity.getText( );
Pattern p = Pattern.compile( "[ 0-9,&%$#@!()*^]" );
Matcher m = p.matcher( input );
if ( m.find( ) ) {
JOptionPane.showMessageDialog( null, "Characters only",
"Sorry", JOptionPane.ERROR_MESSAGE );
}
}
} );
//-----------------CONTACT---------------------------------------
labelContact = new JLabel( "Phone Number" );
labelContact.setBounds( 20, 210, 100, 20 );
add( labelContact );
textFieldContact = new JTextField( 10 );
textFieldContact.setBounds( 120, 210, 80, 20 );
add( textFieldContact );
textFieldContact.addKeyListener( new KeyAdapter( ) {
public void keyTyped( KeyEvent e ) {
String input = textFieldContact.getText( );
Pattern p = Pattern.compile( "^[ 1-9][ 0-9]{12}$" );
Matcher m = p.matcher( input );
if ( m.find( ) ) {
JOptionPane.showMessageDialog( null, "numbers only",
"Sorry", JOptionPane.ERROR_MESSAGE );
}
}
} );
add( textFieldContact );
//-----------------NOTE---------------------------------------
labelNote = new JLabel( "Note" );
labelNote.setBounds( 20, 260, 140, 30 );
add( labelNote );
textAreaNote = new JTextArea();
textAreaNote.setBounds(100, 260, 200, 50);
add(textAreaNote);
//----------------FEES--------------------------------------
labelFees = new JLabel( "Consultation Fees" );
labelFees.setBounds( 20, 330, 120, 20 );
add( labelFees );
textFieldFees = new JTextField( );
textFieldFees.setBounds( 140, 330, 80, 20 );
add( textFieldFees );
textFieldFees.addKeyListener( new KeyAdapter( ) {
public void keyTyped( KeyEvent e ) {
String input = textFieldFees.getText( );
Pattern p = Pattern.compile( "[ A-Z,a-z,&%$#@!( )*^]" );
Matcher m = p.matcher( input );
if ( m.find( ) ) {
JOptionPane.showMessageDialog( null, "Numbers only",
"Sorry", JOptionPane.ERROR_MESSAGE );
}
}
} );
// ----------------------------------------------------
save = new JButton( "SAVE" );
save.setBounds( 25, 380, 70, 20 );
//save.addActionListener( this );
add( save );
cancel = new JButton( "CANCEL" );
cancel.setBounds( 150, 380, 80, 20 );
//cancel.addActionListener( this );
add( cancel );
}
}
最佳答案
由于您将表单添加到对其中的事件使用react的函数中，因此永远不会有任何东西可以产生这些事件。尝试将这两行从 actionPerformed 移出并移入 frontPage 或另一个初始化函数。
public void actionPerformed( ActionEvent ae )
{
panelAddForm addform = new panelAddForm();
addform.save.addActionListener(this);
...
}
关于java - 在另一个类中定义并在 JFrame 中使用的 JButtton 监听器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16146782/