import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class TestFrame extends JFrame
{
    public static void main(String[] args)
    {
        //滚动面板__参数设置需要时添加滚动条
        JScrollPane findStudentScrollPanel = new JScrollPane(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
        //面板大小
        int WIDTH = 800;
        int HEIGHT = 600;
        findStudentScrollPanel.setBounds((int)((WIDTH*0.04)/2),0,(int)(WIDTH*0.96), (int)(HEIGHT*0.15));
        //添加组件的面板
        JPanel myPanel = new JPanel();
        myPanel.setLayout(new FlowLayout(FlowLayout.LEFT,250,5));
        /*
         * 还要给myPanel设置一下大小
         * 如下所示：
         */
        myPanel.setPreferredSize(new Dimension(findStudentScrollPanel.getWidth(), findStudentScrollPanel.getHeight()));
        //组件准备
        JLabel label1 = new JLabel("label1");
        JLabel label2 = new JLabel("label2");
        JLabel label3 = new JLabel("label3");
        JLabel label4 = new JLabel("label4");

        myPanel.add(label1);
        myPanel.add(label2);
        myPanel.add(label3);
        myPanel.add(label4);
        //滚动面板内组件的设置
        findStudentScrollPanel.setViewportView(myPanel);
        //面板设置可见
        findStudentScrollPanel.setVisible(true);
        //面板添加到窗口
        //aJFrame.add(findStudentScrollPanel);
        JFrame frame = new JFrame();
        frame.setLayout(null);
        frame.add(findStudentScrollPanel);
        frame.setSize(WIDTH, HEIGHT);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}