我有以下三个课程：
-OnePa (它包含 public static void main()) -New -Choose 在同一个包下。
我想 从 Choose.java中获取声明并存储在 New.java 中的“字符串名称”的值
package com.ash;
import javax.swing.JFrame;
public class New1 extends JFrame {
/**
*
*/
private static final long serialVersionUID = 4648531955064052430L;
private JPanel contentPane;
private JTextField textField;
private JTextField textField_1;
private JTextField textField_3;
private JFormattedTextField textField_2;
private JComboBox comboBox;
String FNm;
String LNm;
Connection con;
Choose CT11=new Choose();
//Mask-Formatter is created
protected MaskFormatter createFormatter(String s){
MaskFormatter formatter=null;
try{
formatter=new MaskFormatter(s);
}catch(java.text.ParseException exc){
System.err.println("formatter is bad:"+exc.getMessage());
System.exit(-1);
}
return formatter;
}
public New1() {
setTitle("New ");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 585, 415);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel lblNewLabel = new JLabel("First Name");
lblNewLabel.setFont(new Font("Times New Roman", Font.BOLD, 13));
lblNewLabel.setBounds(40, 62, 91, 28);
contentPane.add(lblNewLabel);
JLabel lblLastName = new JLabel("Last Name");
lblLastName.setFont(new Font("Times New Roman", Font.BOLD, 13));
lblLastName.setBounds(40, 101, 91, 28);
contentPane.add(lblLastName);
textField = new JTextField();
textField.setBounds(150, 66, 146, 20);
contentPane.add(textField);
textField.setColumns(10);
textField_1 = new JTextField();
textField_1.setColumns(10);
textField_1.setBounds(150, 105, 146, 20);
contentPane.add(textField_1);
JButton btnNewButton = new JButton("Next >>");
btnNewButton.setBounds(150, 289, 89, 23);
contentPane.add(btnNewButton);
ImageIcon home = new ImageIcon("D:\\Source AP\\home.jpg");
JButton HomeButton = new JButton(home);
HomeButton.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0) {
textField.setText(null);
textField_1.setText(null);
textField_2.setText(null);
textField_3.setText(null);
dispose();
}
});
HomeButton.setBounds(26, 289, 45, 38);
contentPane.add(HomeButton);
btnNewButton.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
//Storing Values in String
GetValues();
label.setVisible(false);
label_1.setVisible(false);
label_2.setVisible(false);
label_3.setVisible(false);
lblNewLabel_1.setVisible(false);
if((FNm.length()==0 || FNm.trim().length()==0)||
(LNm.length()==0 || LNm.trim().length()==0)))
{
System.out.println("It is blank or contains white
spaces");
}
else{
System.out.println("Success");
//Connection
try {
con=DbConnPa.getConObj();
} catch (ClassNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (SQLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
DbConnPa.Reg1(con, FNm, LNm, Age, RefDoc, Sex);
} catch (SQLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
CT11.setVisible(true);
//hides the current JFrame
dispose();
}
}
});
}
public void GetValues(){
FNm=textField.getText();
LNm=textField_1.getText();
}
}
选择.java：
package com.ash;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JCheckBox;
import javax.swing.JButton;
import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.Font;
import javax.swing.JLabel;
public class Choose extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1946720589313613447L;
private JPanel contentPane;
int i=0;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Choose frame = new Choose();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Choose() {
setTitle("Choose ");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 910, 516);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JButton btnNewButton = new JButton("Next >>");
btnNewButton.setBounds(39, 396, 89, 23);
contentPane.add(btnNewButton);
JCheckBox checkBox = new JCheckBox("Hello");
checkBox.setFont(new Font("Times New Roman", Font.PLAIN, 13));
checkBox.setBounds(39, 120, 132, 23);
contentPane.add(checkBox);
JLabel lblFirstName = new JLabel("First Name :");
lblFirstName.setFont(new Font("Times New Roman", Font.BOLD, 13));
lblFirstName.setBounds(39, 11, 82, 16);
contentPane.add(lblFirstName);
JLabel lblLastName = new JLabel("Last Name :");
lblLastName.setFont(new Font("Times New Roman", Font.BOLD, 13));
lblLastName.setBounds(39, 34, 82, 16);
contentPane.add(lblLastName);
JLabel Ctname = new JLabel();
Ctname.setBounds(131, 12, 132, 16);
contentPane.add(Ctname);
JLabel Ctlst = new JLabel();
Ctlst.setBounds(131, 35, 132, 16);
contentPane.add(Ctlst);
contentPane.add(Ctref);
btnNewButton.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0) {
//if Chk1 is selected it will return TRUE else FALES.
Boolean afb=checkBox.isSelected();
if(afb== true)
{
System.out.println("Is selected");
}
}
});
}
}