Question

为什么我的eclipse写Java，用JTextField的时候，输入的字符没有在文本框中显示？？

/*
* File: GraphicsJTextField.java;
* ---------------------------------------
* This program applies JTextfield;
*/
import java.awt.event.*;
import javax.swing.*;
import acm.graphics.*;
import acm.program.*;
public class GraphicsJTextField extends ConsoleProgram {

private JTextField namefield;
private int x = 20;
private int y = 20;
private GLabel label;

public void init() {
setSize(500,500);
setFont("Courier-24");
namefield = new JTextField(15);
//namefield.setActionCommand("name");

add(new JLabel("Name "), SOUTH );
add(namefield, SOUTH);
namefield.addActionListener(this);
}

public void actionPerformed(ActionEvent e) {
if ( namefield == e.getSource()) {
println("Hello, " + namefield.getText());
}
}

}

Answer 1

代码放 上来啊

Answer 2

事件写的很有问题啊；还是好好看看awt事件方面的资料吧

Answer 3

actionPerformed(ActionEvent e)这事件是不就是输出的如果是请问你在哪把它调用的