import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;
class text2 extends JFrame{
public text2() {
// TODO Auto-generated constructor stub
setBounds(400, 300, 250, 130);
setDefaultCloseOperation(EXIT_ON_CLOSE);
Container container = getContentPane();
container.setLayout(new FlowLayout());
//初始化文本框长度
JTextField jTextField = new JTextField(20);
// JTextField jTextField = new JTextField();
// jTextField.setColumns(20);
//初始化内容
jTextField.setText("aaa");
// JTextField jTextField = new JTextField("aaa");
jTextField.setFont(new Font("黑体", Font.BOLD, 20));//设置字体
container.add(jTextField);
JButton jButton = new JButton("确认");
container.add(jButton);
//添加监听
jButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
System.out.println(jTextField.getText());//获取文本框内容并输出
jTextField.setText("");//情况文本框长度
jTextField.requestFocus();//获取光标
}
});
setVisible(true);
}
public static void main(String[] args) {
new text2();
}
}