java程序返回用户名和密码)

最近在翻阅java基础知识的时候偶然间看到了jpassword的用法的介绍，然后写下了如下的这个demo，供参考，提供意见实现功能：当你输入用户名和密码后会返回一个窗体，有刚才输入的用户名和密码。代码如下所示：packagecom.item.cn;//实现读取登录的密码和用户名importjava.awt.Container;importjava.awt.GridLayout;importjava.awt.Label;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjavax.swing.JButton;importjavax.swing.JFrame;importjavax.swing.JOptionPane;importjavax.swing.JPasswordField;importjavax.swing.JTextField;publicclassJpasswordFieldextendsJFrame{/***@paramargs*/JTextFielduserName;JPasswordFieldpassword;JButtonloginBtn;JButtoncancelBtn;publicJpasswordField(){super(Jpassword的演示);Containercontainer=getContentPane();container.setLayout(newGridLayout(3,2));userName=newJTextField(16);password=newJPasswordField(16);loginBtn=newJButton(登录);loginBtn.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEventevt){char[]pw=password.getPassword();Stringmessage=您的用户名是：+userName.getText()+\n您的密码是：+newString(pw);if(message==null){System.out.println(你需要输入用户名和密码);}else{JOptionPane.showMessageDialog(JpasswordField.this,message);}}});cancelBtn=newJButton(取消);cancelBtn.addActionListener(newActionListener(){publicvoidactionPerform(ActionEventevt){System.exit(0);}@OverridepublicvoidactionPerformed(ActionEventarg0){//TODOAuto-generatedmethodstubSystem.exit(0);}});container.add(newLabel(userName：));container.add(userName);container.add(newLabel(passWord：));container.add(password);container.add(loginBtn);container.add(cancelBtn);this.setSize(300,150);this.setLocation(400,250);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.setVisible(true);}publicstaticvoidmain(String[]args){newJpasswordField();}}最近在翻阅java基础知识的时候偶然间看到了jpassword的用法的介绍，然后写下了如下的这个demo，供参考，提供意见实现功能：当你输入用户名和密码后会返回一个窗体，有刚才输入的用户名和密码。代码如下所示：packagecom.item.cn;//实现读取登录的密码和用户名importjava.awt.Container;importjava.awt.GridLayout;importjava.awt.Label;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjavax.swing.JButton;importjavax.swing.JFrame;importjavax.swing.JOptionPane;importjavax.swing.JPasswordField;importjavax.swing.JTextField;publicclassJpasswordFieldextendsJFrame{/***@paramargs*/JTextFielduserName;JPasswordFieldpassword;JButtonloginBtn;JButtoncancelBtn;publicJpasswordField(){super(Jpassword的演示);Containercontainer=getContentPane();container.setLayout(newGridLayout(3,2));userName=newJTextField(16);password=newJPasswordField(16);loginBtn=newJButton(登录);loginBtn.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEventevt){char[]pw=password.getPassword();Stringmessage=您的用户名是：+userName.getText()+\n您的密码是：+newString(pw);if(message==null){System.out.println(你需要输入用户名和密码);}else{JOptionPane.showMessageDialog(JpasswordField.this,message);}}});cancelBtn=newJButton(取消);cancelBtn.addActionListener(newActionListener(){publicvoidactionPerform(ActionEventevt){System.exit(0);}@OverridepublicvoidactionPerformed(ActionEventarg0){//TODOAuto-generatedmethodstubSystem.exit(0);}});container.add(newLabel(userName：));container.add(userName);container.add(newLabel(passWord：));container.add(password);container.add(loginBtn);container.add(cancelBtn);this.setSize(300,150);this.setLocation(400,250);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.setVisible(true);}publicstaticvoidmain(String[]args){newJpasswordField();}}