有时候会出现透明怎么处理

[minggen]

`package main;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.UIManager;

import org.jb2011.lnf.beautyeye.BeautyEyeLNFHelper;

public class UI extends JFrame {

public UI() {
    super("web service client");
    initUI();
}

public void initUI() {
    this.setBounds(300, 300, 500, 400);
    layoutUI();
    this.setVisible(true);
    this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}

private void layoutUI() {

    // 对象实例化
    JTabbedPane tab = new JTabbedPane(JTabbedPane.TOP);
    // 容器
    Container container = this.getContentPane();
    // 对象化面板
    JPanel p1 = new JPanel();
    JPanel p2 = new JPanel();
    JPanel p3 = new JPanel();
    JPanel p4 = new JPanel();

    tab.add(p1, "邮编查询");
    tab.add(p2, "汉译英");
    tab.add(p3, "Inserte");
    tab.add(p4, "Delete");

// container.setLayout(new BorderLayout());
container.add(new JPanel().add(tab));

}
public static void main(String[] args) {
    
    try {
		BeautyEyeLNFHelper.launchBeautyEyeLNF();
		UIManager.put("RootPane.setupButtonVisible", false);
	    UI ui = new UI();
	} catch (Exception e) {
		e.printStackTrace();
	}
    
}

}`