java 使用按钮将文本从文本字段移动到文本区域
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Moving text from a textfield to textarea with a button
提问by Richard Long
This code compiles and runs but it does not copy the text from the text field then place it into the text area.
此代码编译并运行，但它不会从文本字段复制文本，然后将其放入文本区域。
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class NameGameFrame extends JFrame
{
static JTextField textfield = new JTextField(20);
static JTextArea textarea = new JTextArea(30,30);
public static void main( String[] args)
{
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setTitle("Name Game");
frame.setLocation(500,400);
frame.setSize(800,800);
JPanel panel = new JPanel(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
JLabel label = new JLabel("Enter the Name or Partial Name to search:");
c.gridx = 0;
c.gridy = 0;
c.insets = new Insets(2,2,2,2);
panel.add(label,c);
c.gridx = 0;
c.gridy = 1;
panel.add(textarea,c);
JButton button = new JButton("Search");
c.gridx = 1;
c.gridy = 1;
panel.add(button,c);
c.gridx = 1;
c.gridy = 0;
panel.add(textfield,c);
frame.getContentPane().add(panel, BorderLayout.NORTH);
frame.pack();
frame.setVisible(true);
}
static class Action implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
//This is the code that should perform the task
String name = textfield.getText();
textarea.append(name);
}
}
}
I am new to Java programming and I apologize if my questions are simplistic.
我是 Java 编程的新手，如果我的问题过于简单，我深表歉意。
采纳答案by Sachin Mhetre
Appen below code to your program after ther declaration of button
ie. JButton buuton = new JButton("Search");
在按钮
ie声明之后将下面的代码添加到您的程序中。JButton buuton = new JButton("Search");
button.addActionListener(new ActionAdapter()
{
public void actionPerformed(ActionEvent ae)
{
textarea.setText(textfield.getText());
}
});
