界面插件显示不出来

Question

package Interface;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JPasswordField;

import javax.swing.JTextField;

//import com.lhl.score.GUI.login.loginEvent;

public class login extends JFrame {

private JPanel pane1;

private JLabel usernameJL;

private JLabel paswordJL;

private JButton enter;

private JButton cancel;

JTextField usernameJT;

JPasswordField passworkJT;

public login(){

getContentPane().setLayout(null);

setTitle("运动会管理系统");

pane1=new JPanel();

enter=new JButton("登录");

enter.addActionListener(null);

cancel=new JButton("取消");

cancel.addActionListener(null);

usernameJL=new JLabel("用户名");

usernameJT=new JTextField(20);

paswordJL=new JLabel("密码");

passworkJT=new JPasswordField("20");

pane1.setLayout(null);

enter.setBounds(50, 170, 25, 20);

cancel.setBounds(50, 170, 25, 20);

usernameJL.setBounds(20, 20, 30, 20);

paswordJL.setBounds(20, 60, 30, 20);

usernameJT.setBounds(60, 100, 70, 20);

passworkJT.setBounds(60, 140, 70, 20);

pane1.add(enter);

pane1.add(cancel);

pane1.add(usernameJL);

pane1.add(paswordJL);

pane1.add(usernameJT);

pane1.add(passworkJT);

setBounds(100, 100, 200, 160);

getContentPane().add(pane1);

validate();

setVisible(true);

}

public static void main(String[] args){

login login1=new login();

  }

}