也許這已經被問過一次,但我有點卡住了,無法自己找到解決方案。 我從第一個按鈕使用文本字段獲得文本。現在我需要將這個文本放入第二個按鈕或文本文件中。Java Swing將JTextField值移動到第二個按鈕中
下面的代碼,我知道這個錯誤。
System.out.println("Author's name: " + newauthor());
System.out.println("Book name: " + newbook());
import java.awt.GridLayout;
import java.awt.event.*;
import java.io.FileNotFoundException;
import javax.swing.*;
public class library extends JFrame
{
private JPanel pnl;
public library() throws FileNotFoundException {
pnl = (JPanel) getContentPane();
JPanel panel = new JPanel();
getContentPane().add(panel);
panel.setLayout(null);
JButton addbutton = new JButton("Add new book");
addbutton.setBounds(75, 30, 150, 30);
addbutton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
JTextField authorfield = new JTextField(15);
JTextField bookField = new JTextField(15);
JPanel mypanel = new JPanel(new GridLayout(0, 1));
mypanel.add(new JLabel("Type Author's Name and Book name:"));
mypanel.add(new JLabel("Author's Name:"));
mypanel.add(authorfield);
mypanel.add(new JLabel("Book name:"));
mypanel.add(bookField);
int result = JOptionPane.showConfirmDialog(null, mypanel,
"Add a new book", JOptionPane.OK_CANCEL_OPTION);
if (result == JOptionPane.OK_OPTION)
{
String newauthor = authorfield.getText();
String newbook = bookField.getText();
if (!newauthor.isEmpty() && !newbook.isEmpty())
{
JOptionPane.showMessageDialog(pnl, "Book "+bookField.getText()+"\nAuthor "+authorfield.getText()+"\nSuccessfully added to the list.",
"Book was added.", JOptionPane.INFORMATION_MESSAGE);
}
else
{
JOptionPane.showMessageDialog(pnl, "Both must be filled!",
"Error", JOptionPane.ERROR_MESSAGE);
}
}
}
});
panel.add(addbutton);
JButton listbutton = new JButton("List");
listbutton.setBounds(75, 60, 150, 30);
panel.add(listbutton);
addbutton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
System.out.println("Author's name: " + newauthor());
System.out.println("Book name: " + newbook());
}
});
JButton deletebutton = new JButton("Delete");
deletebutton.setBounds(75, 90, 150, 30);
panel.add(deletebutton);
setTitle("Library Menu");
setSize(300, 200);
setLocationRelativeTo(null);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public static void main(String[] args) throws FileNotFoundException {
library ex = new library();
ex.setVisible(true);
}
}
*「..需要將此文本轉換爲第二個按鈕或文本文件。」*這些是兩個*非常不同*的要求!你應該爲這個問題確定一個或另一個,否則我認爲它對於SO來說太「寬泛」。 –
現在我需要把它變成第二個按鈕。 –