关于我的任务的一些信息：
基于之前定义的Person类，设计您自己的Java应用程序，该应用程序显示一个表单供用户输入其姓名，year_of_birth和就业状态。提供的数据将用于实例化Person对象。表单还应包含JButton和JTextField。当用户点击JButton时，应用程序应显示“Welcome [name]！你年纪大了。时间对你很友善。“，其中[name]和[age]是Person对象的名称和年龄属性的当前值。
我对创建GUI有点新意。我使用了jFrame设计，允许我创建GUI的设计。我无法使用该表单显示结果。具体来说，让按钮显示结果，输入后将名称存储在变量中，并在点击按钮后点亮对话框。
package my.userFormUI;
/**
*
* @author Randy
*/
public class userFormUI extends javax.swing.JFrame {
/**
* Creates new form userFormUI
*/
public userFormUI() {
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")
int age;
int year;
public int getAge(int year_of_birth){//get year method
age = 2014 - year_of_birth;
return age;
}//end method
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jDialog1 = new javax.swing.JDialog();
jDialog2 = new javax.swing.JDialog();
jDialog3 = new javax.swing.JDialog();
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
name = new javax.swing.JTextField();
year_of_birth = new javax.swing.JTextField();
jRadioButton1 = new javax.swing.JRadioButton();
jRadioButton2 = new javax.swing.JRadioButton();
jButton1 = new javax.swing.JButton();
javax.swing.GroupLayout jDialog1Layout = new javax.swing.GroupLayout(jDialog1.getContentPane());
jDialog1.getContentPane().setLayout(jDialog1Layout);
jDialog1Layout.setHorizontalGroup(
jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
);
jDialog1Layout.setVerticalGroup(
jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 300, Short.MAX_VALUE)
);
javax.swing.GroupLayout jDialog2Layout = new javax.swing.GroupLayout(jDialog2.getContentPane());
jDialog2.getContentPane().setLayout(jDialog2Layout);
jDialog2Layout.setHorizontalGroup(
jDialog2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
);
jDialog2Layout.setVerticalGroup(
jDialog2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 300, Short.MAX_VALUE)
);
javax.swing.GroupLayout jDialog3Layout = new javax.swing.GroupLayout(jDialog3.getContentPane());
jDialog3.getContentPane().setLayout(jDialog3Layout);
jDialog3Layout.setHorizontalGroup(
jDialog3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
);
jDialog3Layout.setVerticalGroup(
jDialog3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 300, Short.MAX_VALUE)
);
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "User Information", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Times New Roman", 1, 12), new java.awt.Color(0, 0, 0))); // NOI18N
jLabel1.setText("NAME:");
jLabel2.setText("YEAR BORN:");
jLabel3.setText("EMPLOYMENT STATUS:");
name.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
nameActionPerformed(evt);
}
});
year_of_birth.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
year_of_birthActionPerformed(evt);
}
});
jRadioButton1.setText("Employed");
jRadioButton2.setText("Unemployed");
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jRadioButton2)
.addComponent(jRadioButton1))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(name, javax.swing.GroupLayout.PREFERRED_SIZE, 196, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(year_of_birth, javax.swing.GroupLayout.DEFAULT_SIZE, 41, Short.MAX_VALUE))))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jLabel2)
.addComponent(name, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(year_of_birth, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jRadioButton1))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jRadioButton2)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
jButton1.setText("SUBMIT");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(39, 39, 39)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 84, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(14, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(104, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
这是我的编码需要开始的地方。
private void year_of_birthActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int year = Integer.parseInt(year_of_birth.getText());
getAge(year);
}//attempted to convert a string to an integer here
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here
System.out.println("Welcome" + name + " ! You are " + getAge(year) + " old. Time has been kind to you.");
}//Code for button here
private void nameActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}//name text field
/**
* @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(userFormUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(userFormUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(userFormUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(userFormUI.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 userFormUI().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JDialog jDialog1;
private javax.swing.JDialog jDialog2;
private javax.swing.JDialog jDialog3;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JPanel jPanel1;
private javax.swing.JRadioButton jRadioButton1;
private javax.swing.JRadioButton jRadioButton2;
private javax.swing.JTextField name;
private javax.swing.JTextField year_of_birth;
// End of variables declaration
}
非常感谢任何帮助。我已经过了截止日期，并对GUI的编码方式感到困惑。
答案 0 :(得分：1)
你有很多不必要的代码。你需要清理它，例如你有3个对话框实例。你不需要它们。提出你的问题，你需要编写如下的实现：
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// This will display message
JOptionPane.showMessageDialog(this, "Welcome" + name.getText() + " ! You are " + getAge(Integer.parseInt(year_of_berth.getText())) + " old. Time has been kind to you.");
// here you need to write code to populate your Person Object.
}
希望这有帮助
答案 1 :(得分：0)
您不需要每个textField都有一个事件。这样：
name.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
nameActionPerformed(evt);
}
});
year_of_birth.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
year_of_birthActionPerformed(evt);
}
});
我擦除了这段代码。
当用户点击按钮时，您只需要一个事件，因此您需要这个事件。
我会创建一个nameActionPerformed()和year_of_birthActionPerformed()方法，而不是方法getName()和getYearOfBirth()。
private String getName(){
return name.getText();
}
private int getYearOfBirth(){
return Integer.parseInt(year_of_birth.getText());
}
然后，在按钮事件的方法中：
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
String name = getName();
int year = getYearOfBirth();
System.out.println("Welcome" + name + " ! You are " + getAge(year) + " old. Time has been kind to you.");
}