谁能帮我理解下面创建文本字段的代码?关于以下代码的摘要将非常有用。
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JTextField;
public class CreateNewJTextField extends JFrame {
private static final long serialVersionUID = 1L;
public CreateNewJTextField() {
// set flow layout for the frame
this.getContentPane().setLayout(new FlowLayout());
JTextField field3 = new JTextField(10);
add(field3);
}
private static void createAndShowGUI() {
JFrame frame = new CreateNewJTextField();
frame.pack();
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
createAndShowGUI();
}
}